# Results ofthe July 

# 19-21, 2011 Engineering Tests forSulfurDioxide Emissions

# atthe Arce/orMittalMinorca Mine Inc. Locatedin

Virginia, Minnesota

Furnace StackA Furnace StackB Furnace StackC 

# Furnace StackD SV014 SV015 SV016 SV017



# BarrProjectNo. 23/69-1223.00

Preparedfor ArcelorMittalMinorca Mine Inc. Virginia, Minnesota

March 2012



# BARR 4700West 77th Street Minneapolis, MN 55435-4803 Phone: 

### (952) 832-2600 Fax: 

### (952) 832-2601 

# Results ofthe July 

# 19-21, 2011 Engineering Tests forSulfurDioxide Emissions

# atthe Arce/orMittalMinorca Mine Inc. Locatedin

Virginia, Minnesota

Furnace StackA Furnace StackB Furnace StackC 

# Furnace StackD SV014 SV015 SV016 SV017



# BarrProjectNo. 23/69-1223.00

Preparedfor ArcelorMittalMinorca Mine Inc. Virginia, Minnesota

March 2012



# BARR 4700West 77th Street Minneapolis, MN 55435-4803 Phone: 

### (952) 832-2600 Fax: 

### (952) 832-2601

# Results ofthe July 19-21, 2011 Engineering Tests for Sulfur Dioxide Emissions attheArcelorMittal Minorca Mine Inc. Located in Virginia, Minnesota

Table ofContents
Executive Summary

.....................................................................................................................................iv Introduction

................................................................................................................................................... 1 Results Summary

..........................................................................................................................................2 InduratingFurnaceA-D ScrubberStack(SV014-SV017, EU026)

.......................................................2 ProcessDescription

.......................................................................................................................................3 StackTestingProceduresand Methods

........................................................................................................4

23691223 11 

# Results ofthe July 19-21, 2011 Engineering Tests for Sulfur Dioxide Emissions attheArcelorMittal Minorca Mine Inc. Located in Virginia, Minnesota

Table ofContents
Executive Summary

.....................................................................................................................................iv Introduction

................................................................................................................................................... 1 Results Summary

..........................................................................................................................................2 InduratingFurnaceA-D ScrubberStack(SV014-SV017, EU026)

.......................................................2 ProcessDescription

.......................................................................................................................................3 StackTestingProceduresand Methods

........................................................................................................4

23691223 11

## Table I Table 

## 2 Table 3 

## Table 4 Table S 

## List ofTables

Gaseous PollutantTestResults Summary

- Furnace StackA (SVOI4) Gaseous PollutantTestResults Summary

- Furnace Stack B (SVOIS) Gaseous PollutantTest Results Summary

- Furnace Stack C (SVO16) Gaseous PollutantTestResults Summary

- Furnace Stack D (SVO17) Gaseous PollutantTestResults Summary

- Furnace Line StacksA-D (SVOI4-SVOI7, EU026)



## List of Figures
Figure I TestPortLocations- A and B InduratingFurnace Stacks (SVOI4) and (SV01S) Figure 2 Traverse PointLocations- A and B InduratingFurnace Stacks (SV014) and (SV01S) Figure 3 TestPort Locations - C and D Indurating Furnace Stacks (SVO16) and (SVO17) Figure 4 Traverse PointLocations- C and D Indurating Furnace Stacks (SV016) and (SVOI7)



## List ofAppendices
Appendix A Report Calculations and Nomenclature Appendix B Field Data Sheets Appendix C InstrumentOutput Appendix D Calibration Data AppendixE Cylinder Gas Certifications AppendixF Process OperatingData AppendixG ProjectParticipants and ContactInformation

23691223 

## iii 

## Table I Table 

## 2 Table 3 

## Table 4 Table S 

## List ofTables

Gaseous PollutantTestResults Summary

- Furnace StackA (SVOI4) Gaseous PollutantTestResults Summary

- Furnace Stack B (SVOIS) Gaseous PollutantTest Results Summary

- Furnace Stack C (SVO16) Gaseous PollutantTestResults Summary

- Furnace Stack D (SVO17) Gaseous PollutantTestResults Summary

- Furnace Line StacksA-D (SVOI4-SVOI7, EU026)



## List of Figures
Figure I TestPortLocations- A and B InduratingFurnace Stacks (SVOI4) and (SV01S) Figure 2 Traverse PointLocations- A and B InduratingFurnace Stacks (SV014) and (SV01S) Figure 3 TestPort Locations - C and D Indurating Furnace Stacks (SVO16) and (SVO17) Figure 4 Traverse PointLocations- C and D Indurating Furnace Stacks (SV016) and (SVOI7)



## List ofAppendices
Appendix A Report Calculations and Nomenclature Appendix B Field Data Sheets Appendix C InstrumentOutput Appendix D Calibration Data AppendixE Cylinder Gas Certifications AppendixF Process OperatingData AppendixG ProjectParticipants and ContactInformation

23691223 

## iii

# Executive Summary

BarrEngineeringCompany performed engineeringtests on the induratingfurnace scrubber stacks A, B, Cand 0 (SV014, SV015, SV016 and SV017) atthe ArcelorMittal Minorca Mine Inc. located in Virginia, Minnesota. Tests for sulfurdioxide (S02) were conducted at each ofthe stacks during the period ofJuly 19-21,2011. Testresults are presented in the Executive Summary Table.

Process operations and production rates forthese tests were within normal process rates consistent with performancetestingrequirements.

TestParameters EPA Methods 1-4, 6C

Test Date

S02Concentration, ppmdry

S02Emission Rate, Ih/hr

23691223 

# EngineeringTesting Executive Summary Table

S02 

### PelletInduratingFurnaceLine (Avera2eTestResults) StackA StackB StackC StackD SV014 SV015 SV016 SV017

7/19/2011 7/20/2011 7/20-2112011 7/2112011



## 5.7 5.6 4.0 7.0

6.2 6.4 3.4 6.5 Total EU026



# --



# --

23

IV 

# Executive Summary

BarrEngineeringCompany performed engineeringtests on the induratingfurnace scrubber stacks A, B, Cand 0 (SV014, SV015, SV016 and SV017) atthe ArcelorMittal Minorca Mine Inc. located in Virginia, Minnesota. Tests for sulfurdioxide (S02) were conducted at each ofthe stacks during the period ofJuly 19-21,2011. Testresults are presented in the Executive Summary Table.

Process operations and production rates forthese tests were within normal process rates consistent with performancetestingrequirements.

TestParameters EPA Methods 1-4, 6C

Test Date

S02Concentration, ppmdry

S02Emission Rate, Ih/hr

23691223 

# EngineeringTesting Executive Summary Table

S02 

### PelletInduratingFurnaceLine (Avera2eTestResults) StackA StackB StackC StackD SV014 SV015 SV016 SV017

7/19/2011 7/20/2011 7/20-2112011 7/2112011



## 5.7 5.6 4.0 7.0

6.2 6.4 3.4 6.5 Total EU026



# --



# --

23

IV

# Introduction

BarrEngineering Companyperformed engineeringtests onthe furnace scrubber stacks A-D (SVO 14- SVOI7) atArcelorMittal MinorcaMine Inc. facility located in Virginia, Minnesota. The purpose of thetestingwasto collect sulfur dioxide (S02) emission data. The tests were completed July 19-21, 2011 in conjunction with compliance demonstration for oxides ofnitrogen testing (NOx)' 

## TheNOx 

## tests have been reported separately.

Each furnace stackwas tested independently for S02. Testingbegan on July 19,2011 at Stack A (SVOI4) and ended on Stack D (SVOI7) on July 21,2011. Each test series consisted ofthree onehourruns.

Tom Kuchinski led the Barrtestteam. Jaime Baggenstoss and Adam SershaofArcelorMittal provided testcoordination with facility operations. A list ofprojectparticipants is provided in AppendixG.

23691223 

# Introduction

BarrEngineering Companyperformed engineeringtests onthe furnace scrubber stacks A-D (SVO 14- SVOI7) atArcelorMittal MinorcaMine Inc. facility located in Virginia, Minnesota. The purpose of thetestingwasto collect sulfur dioxide (S02) emission data. The tests were completed July 19-21, 2011 in conjunction with compliance demonstration for oxides ofnitrogen testing (NOx)' 

## TheNOx 

## tests have been reported separately.

Each furnace stackwas tested independently for S02. Testingbegan on July 19,2011 at Stack A (SVOI4) and ended on Stack D (SVOI7) on July 21,2011. Each test series consisted ofthree onehourruns.

Tom Kuchinski led the Barrtestteam. Jaime Baggenstoss and Adam SershaofArcelorMittal provided testcoordination with facility operations. A list ofprojectparticipants is provided in AppendixG.

23691223

# Results Summary

Results ofthe engineeringtests are summarized in the Executive SummaryTable. 

# Indurating Furnace A-O ScrubberStack (SV014-SV017, EU026)
Theresults ofthe July 19-21, 2011 S02tests at StacksA-D are summarized individuallyin Tables 1- 4, respectively. The combined S02 emissionrates forthe EmissionUnitand average concentrations ofthe four stacks are provided in Table 5.

At StackC process delays allowed for single testrun tobe performed on July 20, 2011. Runs 2 and 3

were completed on July 21, 2011. No otherproblems ordifficulties were experienced duringthis

test.

Forthis series ofteststhe process and control equipmentwere operated consistent with requirements ofa performancetest. Operatingdata is provided in AppendixF.

23691223 

## 2 

# Results Summary

Results ofthe engineeringtests are summarized in the Executive SummaryTable. 

# Indurating Furnace A-O ScrubberStack (SV014-SV017, EU026)
Theresults ofthe July 19-21, 2011 S02tests at StacksA-D are summarized individuallyin Tables 1- 4, respectively. The combined S02 emissionrates forthe EmissionUnitand average concentrations ofthe four stacks are provided in Table 5.

At StackC process delays allowed for single testrun tobe performed on July 20, 2011. Runs 2 and 3

were completed on July 21, 2011. No otherproblems ordifficulties were experienced duringthis

test.

Forthis series ofteststhe process and control equipmentwere operated consistent with requirements ofa performancetest. Operatingdata is provided in AppendixF.

23691223 

## 2

# Process Description

ArcelorMittal minestaconite ore (magnetite) and produces iron pelletsthatare shipped to the company'sblast furnace in Indiana. The wet scrubberstested controlthe particulate matteremissions in the waste gases from the pellet indurating process.

Concentrate slurry flows to a storagetank where limestone is added to make flux pellets. The
concentrate is dewatered by vacuum disk filters, mixed with bentonite and conveyed to ballingdisks. Green balls produced onthe ballingdisks aretransferred to a roll conveyorfor additional removal of

overand undersize material.

The green balls are distributed evenlyacross palletcars, priorto entry intothepelletfurnace. The palletcars have a layeroffired pellets, calledthe hearth layer, on the bottom and sides ofthe car. Thehearth layer acts as a bufferbetweenthe pallet carandthe heat generated throughthe exothermic conversion ofmagnetiteto hematite.

There is one natural gas fired furnace at ArcelorMittal'staconite plant. The straightgrate furnace has several distinct zones. The firsttwo stages are updraft and downdraft drying zones. The next zones

arethe preheat zone and firing zone. The temperature increases as the pellets passthrough each zone reaching a peak in the firing zone. Thepellets enterthe after-firingzone, where the conversion of magnetiteto hematite is completed. The lasttwo zones are coolingzonesthat allowthe pelletsto be discharged at atemperature ofaround 120 degreesFahrenheit.

Heated air discharged from thetwo cooling zones is recirculatedtothe drying, preheatand firing

zones. Off-gases from the furnaces are vented primarilythrough two ducts, thehood exhaustthat handlesthe drying and recirculated cooling gases, and thewindboxexhaust, which handles the preheat, firing, and after-firing gases. Thewindboxexhaustflows through a multiclone, which protectsthe downstream fan, andthen enters a commonheader sharedwiththehood exhaust stream. The exhaust gases are subsequentlydivided into four streams which leadtofour venturi rod scrubbers and exhaustfrom individual stacks.

Process throughput and control device data averaged by testrun is summarized in the process operatingforms located in Appendix F.

23691223 

## 3 

# Process Description

ArcelorMittal minestaconite ore (magnetite) and produces iron pelletsthatare shipped to the company'sblast furnace in Indiana. The wet scrubberstested controlthe particulate matteremissions in the waste gases from the pellet indurating process.

Concentrate slurry flows to a storagetank where limestone is added to make flux pellets. The
concentrate is dewatered by vacuum disk filters, mixed with bentonite and conveyed to ballingdisks. Green balls produced onthe ballingdisks aretransferred to a roll conveyorfor additional removal of

overand undersize material.

The green balls are distributed evenlyacross palletcars, priorto entry intothepelletfurnace. The palletcars have a layeroffired pellets, calledthe hearth layer, on the bottom and sides ofthe car. Thehearth layer acts as a bufferbetweenthe pallet carandthe heat generated throughthe exothermic conversion ofmagnetiteto hematite.

There is one natural gas fired furnace at ArcelorMittal'staconite plant. The straightgrate furnace has several distinct zones. The firsttwo stages are updraft and downdraft drying zones. The next zones

arethe preheat zone and firing zone. The temperature increases as the pellets passthrough each zone reaching a peak in the firing zone. Thepellets enterthe after-firingzone, where the conversion of magnetiteto hematite is completed. The lasttwo zones are coolingzonesthat allowthe pelletsto be discharged at atemperature ofaround 120 degreesFahrenheit.

Heated air discharged from thetwo cooling zones is recirculatedtothe drying, preheatand firing

zones. Off-gases from the furnaces are vented primarilythrough two ducts, thehood exhaustthat handlesthe drying and recirculated cooling gases, and thewindboxexhaust, which handles the preheat, firing, and after-firing gases. Thewindboxexhaustflows through a multiclone, which protectsthe downstream fan, andthen enters a commonheader sharedwiththehood exhaust stream. The exhaust gases are subsequentlydivided into four streams which leadtofour venturi rod scrubbers and exhaustfrom individual stacks.

Process throughput and control device data averaged by testrun is summarized in the process operatingforms located in Appendix F.

23691223 

## 3

# StackTesting Procedures and Methods

Testingwas performed from ports meeting EPA Method 1criteria. The Method 1criteriaare listed in the table below.

Location Stack Distance to Distanceto Numberof Numberof Vent 

### 10 upstream downstream ports Points Disturbance Disturbance (Diameters) (Diameters) 

### A-8 Indurating Furnace 8.3 3.5 4 12 (SV014, SV015) C-D Indurating Furnace 8.0 3.4 4 12 (SV016, SV017)



## Sampleport location and traversepointdetail are provided in Figures 1-4.

Volumetric airflowdeterminations were performed in accordance with EPA Method 2using an Stype pitottube and oil manometer.
Oxygen and carbon dioxide was determined using EPA Method 3A with a Servomex 1440 02/C02 

## analyzer

Stack gas moisture content was determined bythe performance ofEPA Method 4.

EPA Method 6C was used to determine the concentration ofS02with an API Model 100 EH ultravioletflorescence analyzer. A sample ofthe gas stream was drawn through a heated probe and filter and directed to anafion dryerfor moisture removal. The conditioned stack gas was transported to the analyzer in an unheated Teflon line. The instrumentwas calibrated using EPA Protocol 1gases. Copies ofcalibration gas certifications are located in Appendix F. One-second instrumentreadings

were averaged and recorded every 20 seconds in an electronic file using adata logger. Instrument output datafrom eachtest is located in AppendixC.

The testmethods referenced above are found in 40 CFRPart 60, AppendixA.

23691223 

### 4 

# StackTesting Procedures and Methods

Testingwas performed from ports meeting EPA Method 1criteria. The Method 1criteriaare listed in the table below.

Location Stack Distance to Distanceto Numberof Numberof Vent 

### 10 upstream downstream ports Points Disturbance Disturbance (Diameters) (Diameters) 

### A-8 Indurating Furnace 8.3 3.5 4 12 (SV014, SV015) C-D Indurating Furnace 8.0 3.4 4 12 (SV016, SV017)



## Sampleport location and traversepointdetail are provided in Figures 1-4.

Volumetric airflowdeterminations were performed in accordance with EPA Method 2using an Stype pitottube and oil manometer.
Oxygen and carbon dioxide was determined using EPA Method 3A with a Servomex 1440 02/C02 

## analyzer

Stack gas moisture content was determined bythe performance ofEPA Method 4.

EPA Method 6C was used to determine the concentration ofS02with an API Model 100 EH ultravioletflorescence analyzer. A sample ofthe gas stream was drawn through a heated probe and filter and directed to anafion dryerfor moisture removal. The conditioned stack gas was transported to the analyzer in an unheated Teflon line. The instrumentwas calibrated using EPA Protocol 1gases. Copies ofcalibration gas certifications are located in Appendix F. One-second instrumentreadings

were averaged and recorded every 20 seconds in an electronic file using adata logger. Instrument output datafrom eachtest is located in AppendixC.

The testmethods referenced above are found in 40 CFRPart 60, AppendixA.

23691223 

### 4

# Tables

### ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE 1


### GASEOUS POLLUTANT TEST RESULTS SUMMARY

Furnace StackA (SV014)

Parameter Run 1 Run 2 Test Date 7/19/2011 ! 

### 7/19/2011 Barr Engineering Co. March 28, 2012

Run 3**Avera~e** 

### 7/19/2011 Test Period

- ------------------

# -~--~--i 

# ---**8S0~~~~~--[-~~~S-11~~ ---122S---13-3~-** **~~-** I-**---------~--** ---.------ -.--------------'------

- -'---------'----

-- --- - 

### Air Flow Rate

-- ----------------------,------------T----

-------- -------

# ---~~~~ 

# --_- __**~_=-_-**

# ----------

# --j

-**~~~:~~~--i--** 

# -**~~~:~~~---** i -

# ~i!:~~6- 

# ---**-~~}~6~**

# -_- I--_D_S_C_F_M

______________L------'1--'-S=2,'-'-0-"--00'----_----L

__ 1S'----1-'--,O=-::0--'-0

____

_



# L

__.1-'-. 

### S=-::0-'--',O'--"0--"-0_--L-_ 1 --'-S-'1,--"-00-'---0'-------l EPA Method 6C Results**.~=---------~-----,-** 

### S02 Concentration, ppm-dry S.1 S.7 6.3 S.7**~--~------~~-~----~-~-----'--4--~--+--~~--+--------'~----** 

### S02 Emission Rate, Ib/hr S.6 6.2 6.8 6.2 ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE 1


### GASEOUS POLLUTANT TEST RESULTS SUMMARY

Furnace StackA (SV014)

Parameter Run 1 Run 2 Test Date 7/19/2011 ! 

### 7/19/2011 Barr Engineering Co. March 28, 2012

Run 3**Avera~e** 

### 7/19/2011 Test Period

- ------------------

# -~--~--i 

# ---**8S0~~~~~--[-~~~S-11~~ ---122S---13-3~-** **~~-** I-**---------~--** ---.------ -.--------------'------

- -'---------'----

-- --- - 

### Air Flow Rate

-- ----------------------,------------T----

-------- -------

# ---~~~~ 

# --_- __**~_=-_-**

# ----------

# --j

-**~~~:~~~--i--** 

# -**~~~:~~~---** i -

# ~i!:~~6- 

# ---**-~~}~6~**

# -_- I--_D_S_C_F_M

______________L------'1--'-S=2,'-'-0-"--00'----_----L

__ 1S'----1-'--,O=-::0--'-0

____

_



# L

__.1-'-. 

### S=-::0-'--',O'--"0--"-0_--L-_ 1 --'-S-'1,--"-00-'---0'-------l EPA Method 6C Results**.~=---------~-----,-** 

### S02 Concentration, ppm-dry S.1 S.7 6.3 S.7**~--~------~~-~----~-~-----'--4--~--+--~~--+--------'~----** 

### S02 Emission Rate, Ib/hr S.6 6.2 6.8 6.2

### ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE 2

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stack B (SV015)

Parameter Run 1 Run 2 Test Date 

### 7/20/2011 7/20/2011 f--


### Test Period 835-943 1015-1121 Air Flow Rate ACFM 222,000 223,000 SCFM 186,000 186,000 DSCFM 161,000 161,000 EPA Method 6C Results

--- 

### S02 Concentration, ppm-dry 5.9 5.3

- -----_._-------- 

### S02 Emission Rate, Ib/hr 6.8 6.1 Barr Engineering Co. March 27,2012

Run 3 Average 

### 7/20/2011



# --

--- 

### 1155-1302



# --**-~**



### 224,000 223,000 187,000 186,000 160,000 161,000

5.6 5.6

-- 

### 6.4 6.4 ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE 2

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stack B (SV015)

Parameter Run 1 Run 2 Test Date 

### 7/20/2011 7/20/2011 f--


### Test Period 835-943 1015-1121 Air Flow Rate ACFM 222,000 223,000 SCFM 186,000 186,000 DSCFM 161,000 161,000 EPA Method 6C Results

--- 

### S02 Concentration, ppm-dry 5.9 5.3

- -----_._-------- 

### S02 Emission Rate, Ib/hr 6.8 6.1 Barr Engineering Co. March 27,2012

Run 3 Average 

### 7/20/2011



# --

--- 

### 1155-1302



# --**-~**



### 224,000 223,000 187,000 186,000 160,000 161,000

5.6 5.6

-- 

### 6.4 6.4

### ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE 3

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stack C (SV016)

Parameter Run 1 Run2 Test Date 

### 7/20/2011 7/20/2011

Test Period 1450-1557 1015-1122 Air Flow Rate ACFM 158,000 163,000 SCFM 132,000 139,000 DSCFM 112,000 120,000

--**-~.--~---** -- --- - ---- 

### EPA Method 6C Results

-- ------1-- 

### S02 Concentration, ppm-dry 2.7 

## i 5.8

-_._---------- 

### S02 Emission Rate, Ib/hr 2.2 5.0 Barr Engineering Co. March 28,2012

Run 3 Average 

### 7/20/2011



# --
1327-1433



# --

167,000 163,000 141,000 137,000 122,000 118,000

--- 

### 3.5 4.0 3.1 3.4 ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE 3

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stack C (SV016)

Parameter Run 1 Run2 Test Date 

### 7/20/2011 7/20/2011

Test Period 1450-1557 1015-1122 Air Flow Rate ACFM 158,000 163,000 SCFM 132,000 139,000 DSCFM 112,000 120,000 c--**-~.--~---** -- --- - ---- 

### EPA Method 6C Results

-- ------1-- 

### S02 Concentration, ppm-dry 2.7 

## j 5.8

-_._---------- 

### S02 Emission Rate, Ib/hr 2.2 5.0 Barr Engineering Co. March 28,2012

Run 3 Average 

### 7/20/2011



# --
1327-1433



# --

167,000 163,000 141,000 137,000 122,000 118,000

----- 

### 3.5 4.0 3.1 3.4

### ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE4 Barr Engineering Co. March 28,2012

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stack D (SV017)

Parameter Run 1 Run 2 Run 3 Average Test Date 7/21/2011 7/21/2011 7/21/2011



# --

Test Period 1521-1628 1707-1810 1845-1948


# --

-- ----_.._-- --- 

### Air Flow Rate

- - . --- -----



# -**--+:::~~--+ ~** **::~ci~}-** ACFM 186,000

____ 185,000

--- .__._---- - --- --------- 

### SCFM 155,000 155,000

----_. -- ------

n

__

# ~ ___

# J_~_O_,QQQ___

# I

____**1_3j,9~0_** ------- 

### DSCFM 132,000 131,000

-- -- - ---------- ------------ --- - -_ .. - . 

### _ ... -- 

### EPA Method 6C Results S02 Concentration, ppm-dry 4.6 I 6.7 8.7 

# T--

----------- 6.7

----- 

### S02 Emission Rate, Ib/hr 4.4 ! 

### 6.3 8.2 6.3 ArcelorMittal Minorca Mine Virginia, Minnesota

TABLE4 Barr Engineering Co. March 28,2012

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stack D (SV017)

Parameter Run 1 Run 2 Run 3 Average Test Date 7/21/2011 7/21/2011 7/21/2011



# --

Test Period 1521-1628 1707-1810 1845-1948


# --

-- ----_.._-- --- 

### Air Flow Rate

- - . --- -----



# -**--+:::~~--+ ~** **::~ci~}-** ACFM 186,000

____ 185,000

--- .__._---- - --- --------- 

### SCFM 155,000 155,000

----_. -- ------

n

__

# ~ ___

# J_~_O_,QQQ___

# I

____**1_3j,9~0_** ------- 

### DSCFM 132,000 131,000

-- -- - ---------- ------------ --- - -_ .. - . 

### _ ... -- 

### EPA Method 6C Results S02 Concentration, ppm-dry 4.6 I 6.7 8.7 

# T--

----------- 6.7

----- 

### S02 Emission Rate, Ib/hr 4.4 ! 

### 6.3 8.2 6.3ArcelorMittal Minorca Mine Virginia, Minnesota

Test Date Air Flow Rate ACFM

-----_ ..

### __ .- SCFM

-- DSCFM Parameter

-**------~.** EPA Method 6C Results S02 Concentration, ppm-dry**-~**..- .. ------- S02 Emission Rate, Ib/hr TABLE 5

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stacks A - D (SV014-SV017, EU026)

StackA Stack B Stack C 7/19/2011 7/20/2011 7/20-21/2011

203,000 223,000 163,000 172,000 186,000 137,000 151,000 161,000 118,000

5.7 

# -to 5.6 4.0 6.2 6.4 3.4 Barr Engineering Co. March 28, 2012

Stack D Total 7/21/2011



# --

185,000**!J4,00~_** 155,000 650,000 131,000 561,000

6.7


## -

-- 6.3 22 ArcelorMittal Minorca Mine Virginia, Minnesota

Test Date Air Flow Rate ACFM

-----_ ..

### __ .- SCFM

-- DSCFM Parameter

-**------~.** EPA Method 6C Results S02 Concentration, ppm-dry**-~**..- .. ------- S02 Emission Rate, Ib/hr TABLE 5

GASEOUS POLLUTANTTEST RESULTS SUMMARY

Furnace Stacks A - D (SV014-SV017, EU026)

StackA Stack B Stack C 7/19/2011 7/20/2011 7/20-21/2011

203,000 223,000 163,000 172,000 186,000 137,000 151,000 161,000 118,000

5.7 

# -to 5.6 4.0 6.2 6.4 3.4 Barr Engineering Co. March 28, 2012

Stack D Total 7/21/2011



# --

185,000**!J4,00~_** 155,000 650,000 131,000 561,000

6.7


## -

-- 6.3 22

# Figures

## NOT TO SCALE 4 TEST PORTS @ 

## 90· 101.75" 

# M I
",30'



# o ,'---'-

- -- TESTING PLATFORM ELEVATION



# t

",70'



# TEST PORT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA FROM SCRUBBER



# A &: 

# 8 INDURATING FURNACE STACKS (SV014) 

# &: (SV015)

FIGURE 1 NOT TO SCALE 4 TEST PORTS @ 

## 90· 101.75" 

# M I
",30'



# o ,'---'-

- -- TESTING PLATFORM ELEVATION



# t

",70'



# TEST PORT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA FROM SCRUBBER



# A &: 

# 8 INDURATING FURNACE STACKS (SV014) 

# &: (SV015)

FIGURE 1

# •

• X



# •

X 

# • 

# •

•

X 

# •

•

X ANALYZER PTS
POINT INSERTION DEPTH IN

.. NO. OF TEST PORTS 4 PORT LENGTH 4.5" PORT DIAMETER 6.0" 1 16.99
NO. OF TRAVERSE POINTS 12 

## 2 50.88 DUCT DIAMETER 101.75" 3 84.76



# TRAVERSE POINT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA 

# •

• METHOD 2 PTS
POINT INSERTION DEPTH IN

.. 1 4.43 

## 2 14.90 3 30.11 4 71.64
5 86.85 6 97.32



# A & 

# B INDURATING FURNACE STACKS (SV014) & 

# (SV015)

NOT TO SCALE 

# FIGURE 2 

# •

• X



# •

X



# •

X 

# •

•

X ANALYZER PTS NO. OF TEST PORTS 4 PORT LENGTH 4.5" POINT INSERTION DEPTH IN "
PORT DIAMETER 6.0" 1 16.99
NO. OF TRAVERSE POINTS 12 

## 2 50.88 DUCT DIAMETER 101.75" 3 84.76



# TRAVERSE POINT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA • METHOD 2 PTS
POINT INSERTION DEPTH IN

.. 1 4.43 

## 2 14.90 3 30.11 

## 4 71.64
5 86.85 6 97.32



# A & 

# B INDURATING FURNACE STACKS (SV014) & 

# (SV015)

NOT TO SCALE 

# FIGURE 2

## NOT TO SCALE 4 TEST PORTS @ 

## 90· 105" 

# H

I I



# o 

# I

N30'



## TESTING PLATFORM ELEVATION



# t

N70' 

# I

TEST PORT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA FROM SCRUBBER



# C & 

# D INDURATING FURNACE STACKS (SV016) & 

# (SV017)

FIGURE 3 NOT TO SCALE 4 TEST PORTS @ 

## 90· 105" 

# H

I I



# o 

# I

N30'



## TESTING PLATFORM ELEVATION



# t

N70' 

# I

TEST PORT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA FROM SCRUBBER



# C & 

# D INDURATING FURNACE STACKS (SV016) & 

# (SV017)

FIGURE 3

# •

• X



# •

X



# •

X 

# •


# •

X ANALYZER PTS NO. OF TEST PORTS 4 PORT LENGTH 8.625" POINT INSERTION DEPTH IN

.. PORT DIAMETER 6.0" 1 17.54
NO. OF TRAVERSE POINTS 12 2 52.50 DUCT DIAMETER 105.00" 3 87.47



# TRAVERSE POINT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA • METHOD 2 PTS
POINT INSERTION DEPTH IN

.. 1 4.57 2 15.38 3 31.07 4 73.93
5 89.62 6 100.43



# C & 

# D INDURATING FURNACE STACKS (SV016) & 

# (SV017)

NOT TO SCALE 

# FIGURE 4 

# •

• X



# •

X



# •

X 

# •


# •

X ANALYZER PTS NO. OF TEST PORTS 4 PORT LENGTH 8.625" POINT INSERTION DEPTH IN

.. PORT DIAMETER 6.0" 1 17.54
NO. OF TRAVERSE POINTS 12 2 52.50 DUCT DIAMETER 105.00" 3 87.47



# TRAVERSE POINT LOCATIONS ARCELORMITTAL MINORCA MINE, INC. VIRGINIA, MINNESOTA • METHOD 2 PTS
POINT INSERTION DEPTH IN

.. 1 4.57 2 15.38 3 31.07 4 73.93
5 89.62 6 100.43



# C & 

# D INDURATING FURNACE STACKS (SV016) & 

# (SV017)

NOT TO SCALE 

# FIGURE 4

# Appendices

# AppendixA
Report Calculationsand Nomenclature 

# AppendixA
Report Calculationsand Nomenclature

### CalculationEquations

- EPAMethods3A, 6C, 7E, 10, Modified 16Nl6B

Systembias adjustmentonsourceconcentrationindicatedbythe analyzer.

where:



## C mA isthe adjusted source concentration,ppm(dry) is the average concentrationindicatedbythe analyzer,ppm(dry) is the average oftheinitial andfmal systemcalibrationresponsesofthezero gas,ppm is the averageofthe initialandfinal systemcalibrationresponsesoftheupscale gas,ppm isthe certifiedconcentrationoftheupscalecalibrationgas,ppm

Convertsource concentrationintoemissionrate (lb/hr).

where: 

## C _ 

## MWxCppm 

# ( ..!!!L)

- 24.04 dscm

EUb/llr) 

### = 

## (6.242

# x 10-8

# )xC( mg ) X

## 60 X 

# Q d dscm



# C(.!EK....) dscm 

## MW

24.04 E(/b/hrJ 

### 6.242xlO-8 

## Qd 60 amountofcompound,byweight(mg),per

### dry standardcubic meterofair

isthemolecularweightofthe gaseouscompound whereMW= 64 

### S02 46 

### N02 

### 28 CO 34 TRS (AssumeH2

### SMolecularWeight) isthemolarvolumeofgas at68

### OF and 29.92 inHg,Llg-mole emissionrateofgaseouscompoundinpoundsperhour isthe conversionfactorfrom mg/m 3

### to Ib/ft3 flowrate of

### drygasatstandardconditionsincubicfeetperminute, dscfm isthe conversionfactorfromminutestohours

W:\BusinessUnits\EM\SubunitACtmin\Technicai & SupportServicesWRSAMPLING\Tempiates\Reports\Equations\anaiyzereq.doc 

### CalculationEquations

- EPAMethods3A, 6C, 7E, 10, Modified 16Nl6B

Systembias adjustmentonsourceconcentrationindicatedbythe analyzer.

where:



## C mA isthe adjusted source concentration,ppm(dry) is the average concentrationindicatedbythe analyzer,ppm(dry) is the average oftheinitial andfmal systemcalibrationresponsesofthezero gas,ppm is the averageofthe initialandfinal systemcalibrationresponsesoftheupscale gas,ppm isthe certifiedconcentrationoftheupscalecalibrationgas,ppm

Convertsource concentrationintoemissionrate (lb/hr).

where: 

## C _ 

## MWxCppm 

# ( ..!!!L)

- 24.04 dscm

EUb/llr) 

### = 

## (6.242

# x 10-8

# )xC( mg ) X

## 60 X 

# Q d dscm



# C(.!EK....) dscm 

## MW

24.04 E(/b/hrJ 

### 6.242xlO-8 

## Qd 60 amountofcompound,byweight(mg),per

### dry standardcubic meterofair

isthemolecularweightofthe gaseouscompound whereMW= 64 

### S02 46 

### N02 

### 28 CO 34 TRS (AssumeH2

### SMolecularWeight) isthemolarvolumeofgas at68

### OF and 29.92 inHg,Llg-mole emissionrateofgaseouscompoundinpoundsperhour isthe conversionfactorfrom mg/m 3

### to Ib/ft3 flowrate of

### drygasatstandardconditionsincubicfeetperminute, dscfm isthe conversionfactorfromminutestohours

W:\BusinessUnits\EM\SubunitACtmin\Technicai & SupportServicesWRSAMPLING\Tempiates\Reports\Equations\anaiyzereq.doc

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM

Bias Corrected Concentrations

O2

### ,% CO2

### ,% S02, ppm-dry Emission Rate

S02, Ib/hr Furnace StackA (SV014)



## Results of Sulfur DioxideTest Run 1 7/19/2011
850-1000

201,500 171,300 152,200

19.6 1.2 5.1

(S02, ppm) *(64/24.04)*(6.242*10"-8)*60*DSCFM 5.6 * Airflow datafrom lead test 

## Barr Engineering Co. November30,2011

Run2 Run 3 7/19/2011 7/19/2011
1045-1152 1225-1334

200,700 204,500 170,800 174,000 150,700 149,800

19.7 19.7 1.2 1.3 5.7 6.3

6.2 6.8 

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM

Bias Corrected Concentrations

O2

### ,% CO2

### ,% S02, ppm-dry Emission Rate

S02, Ib/hr Furnace StackA (SV014)



## Results of Sulfur DioxideTest Run 1 7/19/2011
850-1000

201,500 171,300 152,200

19.6 1.2 5.1

(S02, ppm) *(64/24.04)*(6.242*10"-8)*60*DSCFM 5.6 * Airflow datafrom lead test 

## Barr Engineering Co. November30,2011

Run2 Run 3 7/19/2011 7/19/2011
1045-1152 1225-1334

200,700 204,500 170,800 174,000 150,700 149,800

19.7 19.7 1.2 1.3 5.7 6.3

6.2 6.8

### ArcelorMittal Minorca Mine Virginia, Minnesota Furnace StackA (SV014) Barr Engineering Co. March 28, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run2 Run 3 Test Date



# - - 7/19/2011 7/19/2011 7/19/2011 

### Test Period



# - - 850-1000 1045-1152 1225-1334 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circularduct) D inches 101.75 101.75 101.75 Duct Dimensions (length for rectangular duct) L inches



# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 28.30 28.30 28.30 Stack Static Pressure Pg in. H2O -0.90 -0.90 -0.90 Average Stack Temperature, dry bulb Tsf degrees F 126 126 126 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square RootofVelocity Head (DP)AO.5



# - 0.958 0.953 0.967 Orsat Results, Dry Basis Carbon Dioxide %C02 %vlv 1.2 1.2 1.3 Oxygen %02 %v/v 19.6 19.7 19.7 Carbon Monoxide + Nitrogen



# - %vlv 79.2 79.1 79.1

Calculated Data Symbol Units Run 1 Run 2 Run 3 Duct Area A

# =(D/24)A2 

### x PI (Circular Duct) A sq 

### ft 56.47 56.47 56.47 A

# =(L x W)/144 

### (Rectangular Duct) Stack Pressure Ps in Hg 28.23 28.23 28.23 Ps

# =Pbar+ Pg/13.6 

### Average Moisture ContentofStack Gas MC %Vol 11.2 11.8 13.9 MC

# =«VP/Pbar)(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ib/lbmol 28.98 28.98 28.99 Md

# = (0.44 x (%C02»+(0.32x (%02»+(0.28x (%N2+%CO» MolecularWeightofStack Gas, wet Ms Ib/lbmol 27.75 27.69 27.46 Ms

# =Md x (1-(MC/100»+18

### x (MC/100) 

### Average Stack Gas Velocity Vs ftlsec 59.48 59.25 60.35 Vs

# = 85.49 x Cp x (DP)AO.5 x «Ts/Psx Ms)A.51 Actual Volumetric Flowrate Oa acfm 201,513 200,748 204,480 Oa

# = 60xVsxA Volumetric Flowrate atStandard Conditions Os scfm 171,311 170,806 173,982 Os

# =Oa x (528/(Ts+460» 

### x (Ps/29.92) Dry Volumetric Flowrate at Standard Conditions Od dscfm 152,198 150,695 149,787 Od

# = Oa x (1-(MC/100» 

### x (528/(Ts+460» 

### x (Ps/29.92) ArcelorMittal Minorca Mine Virginia, Minnesota Furnace StackA (SV014) Barr Engineering Co. March 28, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run2 Run 3 Test Date



# - - 7/19/2011 7/19/2011 7/19/2011 

### Test Period



# - - 850-1000 1045-1152 1225-1334 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circularduct) D inches 101.75 101.75 101.75 Duct Dimensions (length for rectangular duct) L inches



# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 28.30 28.30 28.30 Stack Static Pressure Pg in. H2O -0.90 -0.90 -0.90 Average Stack Temperature, dry bulb Tsf degrees F 126 126 126 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square RootofVelocity Head (DP)AO.5



# - 0.958 0.953 0.967 Orsat Results, Dry Basis Carbon Dioxide %C02 %vlv 1.2 1.2 1.3 Oxygen %02 %v/v 19.6 19.7 19.7 Carbon Monoxide + Nitrogen



# - %vlv 79.2 79.1 79.1

Calculated Data Symbol Units Run 1 Run 2 Run 3 Duct Area A

# =(D/24)A2 

### x PI (Circular Duct) A sq 

### ft 56.47 56.47 56.47 A

# =(L x W)/144 

### (Rectangular Duct) Stack Pressure Ps in Hg 28.23 28.23 28.23 Ps

# =Pbar+ Pg/13.6 

### Average Moisture ContentofStack Gas MC %Vol 11.2 11.8 13.9 MC

# =«VP/Pbar)(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ib/lbmol 28.98 28.98 28.99 Md

# = (0.44 x (%C02»+(0.32x (%02»+(0.28x (%N2+%CO» MolecularWeightofStack Gas, wet Ms Ib/lbmol 27.75 27.69 27.46 Ms

# =Md x (1-(MC/100»+18

### x (MC/100) 

### Average Stack Gas Velocity Vs ftlsec 59.48 59.25 60.35 Vs

# = 85.49 x Cp x (DP)AO.5 x «Ts/Psx Ms)A.51 Actual Volumetric Flowrate Oa acfm 201,513 200,748 204,480 Oa

# = 60xVsxA Volumetric Flowrate atStandard Conditions Os scfm 171,311 170,806 173,982 Os

# =Oa x (528/(Ts+460» 

### x (Ps/29.92) Dry Volumetric Flowrate at Standard Conditions Od dscfm 152,198 150,695 149,787 Od

# = Oa x (1-(MC/100» 

### x (528/(Ts+460» 

### x (Ps/29.92)

## ArcelorMitlal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM**-----~-** ---_.



### Bias Corrected Concentrations**~---**



### O2,% Furnace Stack B (SV015)



## Results of Sulfur Dioxide Test Run 1 7/20/2011

835-943

222,490 186,470 161,080 

## Barr Engineering Co. March 27,2012

Run2 Run 3 7/20/2011 7/20/2011

1015-1121 1155-1302

223,030 223,820 186,350 186,540 160,760 159,700

- f---

-

-**-~~-** -**---~------.** - 

# [---19.2--1-

-

# 1i1--T 19.3

- - ---- I -**~** - 

# +-- - --- -- - CO2,% 

# 1
1.7 ' 1.6 I 

### 1.6 f------

--- - - 

# --- - - --- - --**~**

# - - --1-

- --- - - --

- 

### S02' ppm-dry

__ _ _ __ _ _5.9

___

# L

__**5.~__** 

## i

__ 5.6_

----- -------- -- 

### -_

.. __ .._-

--- - 

### Emission Rate

--- -- --- -**-----~~---** "-_._.**-----~** -- ----**~--.-** ---_._--



### S02. Ib/hr (S02. ppm) *(64/24.04)*(6.242*101\-8)*60*DSCFM 6.8 6.1 6.4 *Airflowdatafrom lead test 

## ArcelorMitlal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM**-----~-** ---_.



### Bias Corrected Concentrations**~---**



### O2,% Furnace Stack B (SV015)



## Results of Sulfur Dioxide Test Run 1 7/20/2011

835-943

222,490 186,470 161,080 

## Barr Engineering Co. March 27,2012

Run2 Run 3 7/20/2011 7/20/2011

1015-1121 1155-1302

223,030 223,820 186,350 186,540 160,760 159,700

- f---

-

-**-~~-** -**---~------.** - 

# [---19.2--1-

-

# 1i1--T 19.3

- - ---- I -**~** - 

# +-- - --- -- - CO2,% 

# 1
1.7 ' 1.6 I 

### 1.6 f------

--- - - 

# --- - - --- - --**~**

# - - --1-

- --- - - --

- 

### S02' ppm-dry

__ _ _ __ _ _5.9

___

# L

__**5.~__** 

## i

__ 5.6_

----- -------- -- 

### -_

.. __ .._-

--- - 

### Emission Rate

--- -- --- -**-----~~---** "-_._.**-----~** -- ----**~--.-** ---_._--



### S02. Ib/hr (S02. ppm) *(64/24.04)*(6.242*101\-8)*60*DSCFM 6.8 6.1 6.4 *Airflowdatafrom lead test

### ArcelorMittal Minorca Mine Virginia, Minnesota Furnace Stack B (SV015) Barr Engineering Co. March 27, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run2 Run 3 Test Date



# - - 7/20/2011 7/20/2011 7/20/2011 

### Test Period



# - - 835-943 1015-1121 1155-1302 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circularduct) D inches 101.75 101.75 101.75 Duct Dimensions (length for rectangularduct) L inches 

# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 28.00 28.00 28.00 Stack Static Pressure pg in. H2O -0.90 -0.90 -0.90 Average Stack Temperature, dry bulb Tsf degrees F 128 130 131 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square Root ofVelocity Head (DP)"0.5 

# - 1.046 1.046 1.047 Orsat Results, Dry Basis Carbon Dioxide %C02 %v/v 1.7 1.6 1.6 Oxygen %02 %vlv 19.2 19.1 19.3 Carbon Monoxide + Nitrogen



# - %vlv 79.2 79.3 79.1

Calculated Data Symbol Units Run 1 Run2 Run 3 Duct Area A

# =(D/24)"2 

### x PI (Circular Duct) A sq ft 56.47 56.47 56.47 A

# =(Lx W)/144 

### (Rectangular Duct) Stack Pressure Ps in Hg 27.93 27.92 27.92 Ps

# =Pbar+ Pg/13.6 

### Average Moisture ContentofStack Gas MC %Vol 13.6 13.7 14.4 MC

# =«VP/Pbar)(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ibllbmol 29.03 29.02 29.03 Md

# =(0.44 x (%C02»+(0.32x (%02»+(0.28x (%N2+%CO» MolecularWeightofStack Gas, wet Ms Ib/lbmol 27.53 27.50 27.44 Ms

# =Md x (1-(MC/100»+18

### x (MC/100) 

### Average Stack Gas Velocity Vs ftlsec 65.67 65.83 66.06 Vs

# = 85.49x Cp x (DP)"0.5x «Ts/Psx Ms)".5) Actual Volumetric Flowrate Oa acfm 222,490 223,026 223,817 Oa

# = 60xVsxA Volumetric Flowrate at Standard Conditions Os scfm 186,471 186,350 186,537 Os

# = Oa x (528/(Ts+460» 

### x (Ps/29.92) Dry Volumetric Flowrate at Standard Conditions Od dscfm 161,077 160,759 159,704 Od

# = Oa x (1-(MC/100» 

### x (528/(Ts+460» 

### x (Ps/29.92) ArcelorMittal Minorca Mine Virginia, Minnesota Furnace Stack B (SV015) Barr Engineering Co. March 27, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run2 Run 3 Test Date



# - - 7/20/2011 7/20/2011 7/20/2011 

### Test Period



# - - 835-943 1015-1121 1155-1302 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circularduct) D inches 101.75 101.75 101.75 Duct Dimensions (length for rectangularduct) L inches 

# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 28.00 28.00 28.00 Stack Static Pressure pg in. H2O -0.90 -0.90 -0.90 Average Stack Temperature, dry bulb Tsf degrees F 128 130 131 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square Root ofVelocity Head (DP)"0.5 

# - 1.046 1.046 1.047 Orsat Results, Dry Basis Carbon Dioxide %C02 %v/v 1.7 1.6 1.6 Oxygen %02 %vlv 19.2 19.1 19.3 Carbon Monoxide + Nitrogen



# - %vlv 79.2 79.3 79.1

Calculated Data Symbol Units Run 1 Run2 Run 3 Duct Area A

# =(D/24)"2 

### x PI (Circular Duct) A sq ft 56.47 56.47 56.47 A

# =(Lx W)/144 

### (Rectangular Duct) Stack Pressure Ps in Hg 27.93 27.92 27.92 Ps

# =Pbar+ Pg/13.6 

### Average Moisture ContentofStack Gas MC %Vol 13.6 13.7 14.4 MC

# =«VP/Pbar)(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ibllbmol 29.03 29.02 29.03 Md

# =(0.44 x (%C02»+(0.32x (%02»+(0.28x (%N2+%CO» MolecularWeightofStack Gas, wet Ms Ib/lbmol 27.53 27.50 27.44 Ms

# =Md x (1-(MC/100»+18

### x (MC/100) 

### Average Stack Gas Velocity Vs ftlsec 65.67 65.83 66.06 Vs

# = 85.49x Cp x (DP)"0.5x «Ts/Psx Ms)".5) Actual Volumetric Flowrate Oa acfm 222,490 223,026 223,817 Oa

# = 60xVsxA Volumetric Flowrate at Standard Conditions Os scfm 186,471 186,350 186,537 Os

# = Oa x (528/(Ts+460» 

### x (Ps/29.92) Dry Volumetric Flowrate at Standard Conditions Od dscfm 161,077 160,759 159,704 Od

# = Oa x (1-(MC/100» 

### x (528/(Ts+460» 

### x (Ps/29.92)

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM

Bias Corrected Concentrations

O2

### ,% CO2

### ,% S02, ppm-dry Emission Rate

S02, Ib/hr Furnace Stack C (SV016)



## Results of Sulfur Dioxide Test Run 1 7/20/2011


### 1450-1557

157,900 132,300 112,500

18.3 2.2 2.7

(S02' ppm) *(64/24.04)*(6.242*1

### 0"-8)*60*DSCFM 2.2 *Airflow datafrom lead test 

## Barr Engineering Co. November30,2011

Run 2 Run 3 7/20/2011 7/20/2011


### 1015-1122 1327-1433

163,400 166,900 138,800 141,400 120,300 121,900

18.4 18.3 2.3 2.3 5.8 3.5

5.0 3.1 

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM

Bias Corrected Concentrations

O2

### ,% CO2

### ,% S02, ppm-dry Emission Rate

S02, Ib/hr Furnace Stack C (SV016)



## Results of Sulfur Dioxide Test Run 1 7/20/2011


### 1450-1557

157,900 132,300 112,500

18.3 2.2 2.7

(S02' ppm) *(64/24.04)*(6.242*1

### 0"-8)*60*DSCFM 2.2 *Airflow datafrom lead test 

## Barr Engineering Co. November30,2011

Run 2 Run 3 7/20/2011 7/20/2011


### 1015-1122 1327-1433

163,400 166,900 138,800 141,400 120,300 121,900

18.4 18.3 2.3 2.3 5.8 3.5

5.0 3.1

### ArcelorMittal Minorca Mine Virginia, Minnesota Furnace Stack C (SV016) Barr Engineering Co. March 28, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run 2 Run 3 Test Date



# - - 7/20/2011 7/21/2011 7/21/2011 

### Test Period



# - - 1450-1557 1015-1122 1327-1433 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circular duct) D inches 105 105 105 Duct Dimensions (length for rectangular duct) L inches



# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 27.95 28.15 28.15 Stack Static Pressure Pg in. H2O -0.55 -0.55 -0.55 Average Stack Temperature, dry bulb Tsf degrees F 128 124 126 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square RootofVelocity Head (DP)1\0.5



# - 0.695 0.727 0.741 Orsat Results, Dry Basis Carbon Dioxide %C02 %vlv 2.2 2.3 2.3 Oxygen %02 %v/v 18.3 18.4 18.3 Carbon Monoxide + Nitrogen


# - %vlv 79.5 79.3 79.4

Calculated Data Symbol Units Run 1 Run 2 Run 3 Duct Area A

# =(D/24)1\2 

### x PI (Circular Duct) A sq ft 60.13 60.13 60.13 A

# =(Lx W)/144 

### (Rectangular Duct) Stack Pressure Ps in Hg 27.91 28.11 28.11 Ps

# =Pbar+ Pg/13.6 Average Moisture Content ofStack Gas MC %Vol 15.0 * 13.3 * 13.8 MC

# =«VP/Pbar)(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ib/lbmol 29.09 29.10 29.10 Md

# = (0.44 x (%C02})+(0.32x (%02»+(0.28x (%N2+%CO» MolecularWeightofStack Gas, wet Ms Ibllbmol 27.43 27.62 27.57 Ms

# =Md x (1-(MC/100»+18

### x (MC/100) 

### Average Stack Gas Velocity Vs ftlsec 43.76 45.28 46.27 Vs

# = 85.49 x Cpx (DP)1\0.5 x «Ts/Psx Ms)I\.5) Actual Volumetric Flowrate Qa acfm 157,870 163,383 166,925 Qa

# = 60xVsxA Volumetric Flowrate at Standard Conditions Qs scfm 132,273 138,837 141,363 Qs

# =Qa x (528/(Ts+460» 

### x (Ps/29.92) Dry Volumetric Flowrate atStandard Conditions Qd dscfm 112,485 120,344 121,919 Qd

# =Qa x (1-(MC/100» 

### x (528/(Ts+460» 

### x (Ps/29.92) *The mOisture content IS 

### limited bythe saturation mOisture contentofthe stack gas ArcelorMittal Minorca Mine Virginia, Minnesota Furnace Stack C (SV016) Barr Engineering Co. March 28, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run 2 Run 3 Test Date



# - - 7/20/2011 7/21/2011 7/21/2011 

### Test Period



# - - 1450-1557 1015-1122 1327-1433 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circular duct) D inches 105 105 105 Duct Dimensions (length for rectangular duct) L inches



# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 27.95 28.15 28.15 Stack Static Pressure Pg in. H2O -0.55 -0.55 -0.55 Average Stack Temperature, dry bulb Tsf degrees F 128 124 126 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square RootofVelocity Head (DP}1\0.5



# - 0.695 0.727 0.741 Orsat Results, Dry Basis Carbon Dioxide %C02 %vlv 2.2 2.3 2.3 Oxygen %02 %v/v 18.3 18.4 18.3 Carbon Monoxide + Nitrogen


# - %vlv 79.5 79.3 79.4

Calculated Data Symbol Units Run 1 Run 2 Run 3 Duct Area A

# =(D/24)1\2 

### x PI (Circular Duct) A sq ft 60.13 60.13 60.13 A

# =(Lx W)/144 

### (Rectangular Duct) Stack Pressure Ps in Hg 27.91 28.11 28.11 Ps

# =Pbar+ Pg/13.6 

### Average Moisture Content ofStack Gas MC %Vol 15.0 * 13.3 * 13.8 MC

# =«VP/Pbar}(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ib/lbmol 29.09 29.10 29.10 Md

# = (0.44 x (%C02»+(0.32x (%02»+(0.28x (%N2+%CO» MolecularWeightofStack Gas, wet Ms Ibllbmol 27.43 27.62 27.57 Ms

# =Md x (1-(MC/100»+18

### x (MC/100) 

### Average Stack Gas Velocity Vs ftlsec 43.76 45.28 46.27 Vs

# = 85.49 x CpxIDP)1\0.5x «Ts/Psx Ms}1\.5) Actual Volumetric Flowrate Qa acfm 157,870 163,383 166,925 Qa

# = 60xVsxA Volumetric Flowrate at Standard Conditions Qs scfm 132,273 138,837 141,363 Qs

# =Qa x (528/(Ts+460» 

### x (Ps/29.92) Dry Volumetric Flowrate atStandard Conditions Qd dscfm 112,485 120,344 121,919 Qd

# =Qa x (1-(MC/100» 

### x (528/(Ts+460»

### x (Ps/29.92) *The mOisture content IS 

### limited bythe saturation mOisture contentofthe stack gas

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM

Bias Corrected Concentrations



# °

2



### ,% CO2 

### ,% S02, ppm-dry Emission Rate

S02, Ib/hr Furnace Stack D (SV017)



## Results of Sulfur Dioxide Test Run 1 7/21/2011

1521-1628

186,100 155,300 131,700

17.8 2.8 4.6

(S02, ppm) *(64/24.04)*(6.242*10"-8)*60*DSCFM 4.4 * Airflow datafrom lead test 

## Barr Engineering Co. November30,2011

Run 2 Run 3 7/21/2011 7/21/2011

1707-1810 1845-1948

184,100 185,800 153,500 155,100 130,000 131,200

18.0 18.1 2.8 2.5 6.7 8.7

6.3 8.2 

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM DSCFM

Bias Corrected Concentrations



# °

2



### ,% CO2 

### ,% S02, ppm-dry Emission Rate

S02, Ib/hr Furnace Stack D (SV017)



## Results of Sulfur Dioxide Test Run 1 7/21/2011

1521-1628

186,100 155,300 131,700

17.8 2.8 4.6

(S02, ppm) *(64/24.04)*(6.242*10"-8)*60*DSCFM 4.4 * Airflow datafrom lead test 

## Barr Engineering Co. November30,2011

Run 2 Run 3 7/21/2011 7/21/2011

1707-1810 1845-1948

184,100 185,800 153,500 155,100 130,000 131,200

18.0 18.1 2.8 2.5 6.7 8.7

6.3 8.2

### ArcelorMittal Minorca Mine Virginia, Minnesota Furnace Stack D (SV017) Barr Engineering Co. March 28, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run 2 Run 3 Test Date



# - - 7/21/2011 7/21/2011 7/21/2011 Test Period



# - - 1521-1628 1707-1810 1845-1948 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circularduct) D inches 105 105 105 Duct Dimensions (length for rectangular duct) L inches



# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 28.15 28.15 28.15 Stack Static Pressure Pg in. H2O -0.60 -0.60 -0.60 Average Stack Temperature, dry bulb Tsf degrees F 134 135 134 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square RootofVelocity Head (DP)1I0.5 

# - 0.819 0.809 0.817 Orsat Results, Dry Basis Carbon Dioxide %C02 %v/v 2.8 2.8 2.5 Oxygen %02 %v/v 17.8 18.0 18.1 Carbon Monoxide + Nitrogen



# - %v/v 79.4 79.3 79.4

Calculated Data Symbol Units Run 1 Run 2 Run 3 Duct Area A 

### = (D/24)1I2 x PI (Circular Duct) A sq ft 60.13 60.13 60.13 A 

### = (L x 

### W)/144 (Rectangular Duct) Stack Pressure Ps in Hg 28.11 28.11 28.11 Ps 

### = Pbar+ Pg/13.6 Average Moisture ContentofStack Gas MC %Vol 15.2 15.3 15.4 MC 

### = «VP/Pbar)(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ib/lbmol 29.16 29.16 29.13 Md 

### = (0.44 x (%C02»+(0.32x (%02»+(0.28x (%N2+%CO») MolecularWeightofStack Gas, wet Ms Ib/lbmol 27.47 27.45 27.42 Ms 

### = Md x 

### (1-(MC/100»+18 x 

### (MC/100) Average Stack Gas Velocity Vs ftlsec 51.57 51.02 51.51 Vs 

### =85.49 x Cp x (DP)1I0.5 x «Ts/Psx Ms)II.5) Actual Volumetric Flowrate Qa acfm 186,059 184,063 185,848 Qa 

### =60 xVsxA Volumetric Flowrate at Standard Conditions Qs scfm 155,314 153,519 155,095 Qs 

### =Qa x 

### (528/(Ts+460» x (Ps/29.92) Dry Volumetric Flowrate at Standard Conditions Qd dscfm 131,734 130,047 131,241 Qd 

### =Qa x 

### (1-(MC/1 00»x 

### (528/(Ts+460» x (Ps/29.92) ArcelorMittal Minorca Mine Virginia, Minnesota Furnace Stack D (SV017) Barr Engineering Co. March 28, 2012

Determination of Volumetric Airflow Rate, Gas Composition and Moisture Content

Data Entry Symbol Units Run 1 Run 2 Run 3 Test Date



# - - 7/21/2011 7/21/2011 7/21/2011 Test Period



# - - 1521-1628 1707-1810 1845-1948 Number of Sample Ports



# - - 4 4 4 Number of Traverse Points



# - - 12 12 12 Duct Dimensions (diameterfor circularduct) D inches 105 105 105 Duct Dimensions (length for rectangular duct) L inches



# - - - Duct Dimensions (width for rectangular duct) W inches



# - - - Barometric Pressure Pbar in. Hg 28.15 28.15 28.15 Stack Static Pressure Pg in. H2O -0.60 -0.60 -0.60 Average Stack Temperature, dry bulb Tsf degrees F 134 135 134 Pitot Tube Coefficient Cp



# - 0.840 0.840 0.840 Average Square RootofVelocity Head (DP)1I0.5 

# - 0.819 0.809 0.817 Orsat Results, Dry Basis Carbon Dioxide %C02 %v/v 2.8 2.8 2.5 Oxygen %02 %v/v 17.8 18.0 18.1 Carbon Monoxide + Nitrogen



# - %v/v 79.4 79.3 79.4

Calculated Data Symbol Units Run 1 Run 2 Run 3 Duct Area A 

### = (D/24)1I2 x PI (Circular Duct) A sq ft 60.13 60.13 60.13 A 

### = (L x 

### W)/144 (Rectangular Duct) Stack Pressure Ps in Hg 28.11 28.11 28.11 Ps 

### = Pbar+ Pg/13.6 Average Moisture ContentofStack Gas MC %Vol 15.2 15.3 15.4 MC 

### = «VP/Pbar)(RH/100)x 100 MolecularWeightofStack Gas, dry Md Ib/lbmol 29.16 29.16 29.13 Md 

### = (0.44 x (%C02»+(0.32x (%02»+(0.28x (%N2+%CO») MolecularWeightofStack Gas, wet Ms Ib/lbmol 27.47 27.45 27.42 Ms 

### = Md x 

### (1-(MC/100»+18 x 

### (MC/100) Average Stack Gas Velocity Vs ftlsec 51.57 51.02 51.51 Vs 

### =85.49 x Cp x (DP)1I0.5 x «Ts/Psx Ms)II.5) Actual Volumetric Flowrate Qa acfm 186,059 184,063 185,848 Qa 

### =60 xVsxA Volumetric Flowrate at Standard Conditions Qs scfm 155,314 153,519 155,095 Qs 

### =Qa x 

### (528/(Ts+460» x (Ps/29.92) Dry Volumetric Flowrate at Standard Conditions Qd dscfm 131,734 130,047 131,241 Qd 

### =Qa x 

### (1-(MC/1 00»x 

### (528/(Ts+460» x (Ps/29.92)

# Appendix B

Field Data SheetsFacility City. State: Project Name: Source: StackVent

### # Facility City. State: Project Name: Source: StackVent

### #

### ArcelorMittal Minorca Mine Virginia, MN Barr Engineering Co. 9/11/2011



### RESULTS OF STACK MOISTUREAND METERVOLUME DETERMINATIONS

Meter Volume Vm, ft" 370.60 373.580 376.410 379.100 381.750 384.400 386.820 389.700 392.400 394.850 397.900 401.000 403.700

Total Meter Volume Vm, ft· 33.10 RUN**1(08511-10~** Orifice

AH, in H20 Sta.ck IlmPlnger Temp. Temp. Ts, OF (OF)**!i111IH~j** 1.09 1 127 .1.03 I 123 0.93 122 0.89 126 0.83 1 128 0.66 1.02 0.98 0.83 1.10 1.15 1.02 Average Orifice

AH. in H20

1.0 128 126 128 127 126 126 126 Average

Stack Temp.

(OF) 126 69 67 66 66 65 65 65 65 64 63 60 59

.Average Impinger Temp.

(OF) 65 MOIsture**Recov~**Data: . Meter Inlet ("F) Meter Outlet (OF)

75 75 76 76 77 79 79 80 80 79 81 82 Average Meter Temp.

(OF) 77.75 76 76 78 76 76 77 77 77 78 78 79 79

Impinger 2 3 Desiccant I Total Final Initial Diff. 163 110 100 100 63 10 Standard MeterVolume 31.11 Barometric Pressure-.lin Hg) MeterCoefficient 2 1060 

## o 1052 2 8 83 MoistureContent(%v/v) 11.16 28.30 

## I 1.0095 Meter Volume Vm, ft" 

## '4ci3.95
407.00 409.73 412.53 415.20 417.85 420.36 423.00 425.75 428.30 431.22 434.05 436.80

Total Meter Volume Vm. ft· 32.85
Impinger Final Initial Diff. 

### Furnace StackA (SV014)

- Orifice

AH; inH20

1.14 1.09 0.93 0.87 0.86 0.71 0.92 0.88 0.86 1.10 1.04 0.97 Average Orifice

AH, in H20

0.9

170 100 70 

### July 19, 2011**~Uf!~·(1~11.52'** Temp., 1,.'Temp.", Inlet Sta.Ck

..':.I•...

# ~'.m ....·

p.·., .•

# '!i.,.·.,.~.~.,

..

# l!,'.'~'.·'I·> Meter Ts;

### of'**'i"(';i=>~;** (OF) . Meter Outlet (OF)

122 69 125 69 126 64 124 67 128 66 129 62 124 63 127 57 127 56 124 60 126 5.7 125 58 AveragEr A'Jetag¢

Stack 

### Irriplnger Temp. i Temp. '

(OF) ',(OF) 1261 /·62 Moisture**EeCby~Data:** 2 13.' 108 

## o 100 

## o 8 0,. 78 79 80 80 82 82 82 83 84 82 84 85Average Meter Temp.

(OF) 81.04

Desiccant

1122 1113

9 79 78 78 82 80 80 80 81 81 81 82 82

Total

87 Standard MeterVolume 30.69 . Molsl\.lreContent(%vlv)

, 11.77 Barometric Pressure (In Hg) 28.30 

### I MeterCoefficient 1:0095 

## I Meter Volume Vm, ft· 437.10 440.07 443.00 445.80 448.70 451.30 453.75 456.40 459.31 462.00 465.00 468.00 470.94

Total Meter Volume Vm. ft" 33.84
Impinger Final Initial Ditt. Orifice AH, in H20

1.08 1.08 0.89 0.93 0.84 0.71 0.97 0.98 0.86 1.14 1.14 1.01 Average Orifice

AH, in H20

1.0

176 100 .76 ., RUN**,~,**(1225-1336

## f?,~,~ 

# ...•.lq.m{l

...

## ln.~.'.)i'I.·· Meter, Temp.·

. ,Temp. Inlet**Ts{~F** '("F)

. (OF) Meter, Outlet (OF)

125 73 127 63 126 59 126 64 127 58 128 58 125 59 126 56 126 55 123 64 125 60 123 57 Average'**'Av~tage,"**

Stack

. c, lmpinger' Temp. Temp.

(OF) 

# e F) 126 61 Moisture**Re~very** Data: 81 82 83 83 84 85 84 85 86 84 86 86 82 82 82 82 82 83 83 83 83 84 84 84 Average

Meter Temp.

(OF) 83.46

2 1 3 1 Desiccant 1 Total 108 4 1080 100 

## o 1060 8 

### 4 '20 108 Standard MeterVolume 31.47 l\o'I,olsture Content(%vlv) 13.91 Barometric Pressure (in Hg) 28.30 

### 1 MeterCoefficient 1.0095 

### ArcelorMittal Minorca Mine Virginia, MN Barr Engineering Co. 9/11/2011



### RESULTS OF STACK MOISTUREAND METERVOLUME DETERMINATIONS

Meter Volume Vm, 

### ft" 370.60 373.580 376.410 379.100 381.750 384.400 386.820 389.700 392.400 394.850 397.900 401.000 403.700

Total Meter Volume Vm, 

### ft" 33.10
Impinger Final Initial Piff. RUN 1(0850-1000) Stack Implnger Temp. Temp. Ts., OF (OF)

, 

### " 1.09 127 69 .1.03 123 0.93 122 0.89 126 0.83 128 0.66 1.02 0.98 0.83 1.10 1.15 1.02 Average Orifice



### AH. in H20

1.0 128 126 128 127 126 126 126 Average

Stack Temp.

(OF) 126 67 66 66 65 65 65 65 64 63 60 59

.Average Impinger Temp.

(OF) 65 Moisture Recovery Pata: 

### 2 3 163 110 2 100 100 

## o 63 10 2 . Meter Inlet ("F) Meter Outlet (OF)

75 75 76 76 77 79 79 80 80 79 81 82 Average Meter Temp.

(OF) 77.75 76 76 78 76 76 77 77 77 78 78 79 79

Desiccant Total

1060 1052

8 83 Standard MeterVolume 31.11 MoistureContent(%v/v) 11.16 Barometric PressureJin Hg) 28.30 

### I MeterCoefficient 1.0095 

### Furnace StackA (SV014)

Meter Volume Vm, ft" 403.95 407.00 409.73 412.53 415.20 417.85 420.36 423.00 425.75 428.30 431.22 434.05 436.80

Total Meter Volume Vm. 

### ft" 32.85
Impinger Final Initial Piff. '. Orifice



### AH; in H20

1.14 1.09 0.93 0.87 0.86 0.71 0.92 0.88 0.86 1.10 1.04 0.97 Average Orifice

AH, in H20

0.9

170 100 70 

### July 19, 2011

122 69 125 69 126 64 124 67 128 66 129 62 124 63 127 57 127 56 124 60 126 5.7 125 58 Average' A'Jetag¢

Stack 

### Irriplnger Temp. i Temp. '

(OF) .,COF) 126 '. /. 62 Moisture**EeCbji~ryData:** 23.' 108 

## o 100 

## o 8 

### 0,. .. Meter Outlet (OF)

78 79 80 80 82 82 82 83 84 82 84 85Average Meter Temp.

(OF) 81.04

Desiccant

1122 1113

9 79 78 78 82 80 80 80 81 81 81 82 82

Total

87 Standard MeterVolume 30.69 . Molsl\.lreContent(%v/v)

, 11.77 Barometric Pressure (In Hg) 28.30 

### I MeterCoefficient 1:0095 

## I Meter Volume Vm, 

### ft" 437.10 440.07 443.00 445.80 448.70 451.30 453.75 456.40 459.31 462.00 465.00 468.00 470.94

Total Meter Volume Vm. ft" 33.84
Impinger Final Initial Ditt. Orifice 

### AH, in H20

1.08 1.08 0.89 0.93 0.84 0.71 0.97 0.98 0.86 1.14 1.14 1.01 Average Orifice



### AH, in H20

1.0

176 100 76 .. RlJN**.~,** 1225-1336 StaCk**'J.m{lln~r"** '.' Meter**f~ri1(J,',Temp;** Jnlet"

. Meter:**Ts{~F** .**'(~F)** . ..(OF)

125 73 127 63 126 59 126 64 127 58 128 58 125 59 126 56 126 55 123 64 125 60 123 57 Average;'**'Av~tage,** '

Stack

. "Impinger; Temp. Temp.

(OF) 

# e F) 126 61 Moisture**Re~very** Pata: 81 82 83 83 84 85 84 85 86 84 86 86 Outlet (OF)

82 82 82 82 82 83 83 83 83 84 84 84 Average

Meter Temp.

(OF) 83.46

2 3 Desiccant Total 108 4 1080 100 

## o 1060 8 

### 4 '20 108 Standard MeterVolume 31.47 l\o'I,olsture Content(%v/v) 13.91 Barometric Pressure (in Hg) 28.30 

### 1 MeterCoefficient 1.0095Facility City, State: Project Name: Source: StackVent

### # TestDate: No. ofPorts: No. ofPoints: l ;,

### _~=-...., Port Length: " 4.5 DuctDiameter.,:A:; Length: 

### Width: Facility City, State: Project Name: Source: StackVent

### # TestDate: No. ofPorts: No. ofPoints: l ;,

__

### ~:-==-_ Port Length: ' DuctDiameter. Length: 

### Width: estCO2

### %:

### ArcelorMittal Minorca Mine Virginia, MN Barr Engineering Co. 9/11/2011



### RESULTS OF STACK MOISTUREAND METERVOLUME DETERMINATIONS

Furnace Stack B (SV015) July20, 2011

RUN 1 (835-943)**~UN Zl10,15"1,'1Z1)\"'!I~i;"** **'"~,.,** RUN3J1155-1302) Meter Orifice Stacie: Impinger ,: Meter:'·"" Meter Meter Orifice ,**,Sta~fll., "I~Piri9E!r,** 

# \i~J,n;~r

# "i : Meter Meter Orifice Stack ", .'mpirige( Meter 'Meter Volume AH, Temp. Temp. I,nlet' Outlet Volume AH,

# 'i~~~:',; , Temp;:" , Outlet Volume AH, Temp. Temp. Inlet Outlet Vm. W in H20 Ts, OF (OF) (oF) (OF) Vm, W In H20 

## '";'('-f.'{::: '(OF) "

. Vm, W' in H20 Ts, OF (Of) (OF), '.

. '(OF) 471.20 ., 507.00 543.02 

### , 474.400 1.19 125 69 72 74 510.20 1.27 128 

# 7'2 77 78 546.10 1.17 131 64 80 80 477.300 1.20 126 62 73 72 513.20 1.22 129 61 78 

# n 549.20 1.17 132 62 81 80 480.200 1.10 125 59 75 72 516.20 1.08 126 60 79 77 552.20 1.08 131 61 80 80 483.200 1.10 125 60 75 73 519.12 0.98 128 61 80 78 555.20 1.08 130 64 82 80 486.000 1.04 129 

### 58 76 73 522.00 0.97 133 60 81 78 558.00 0.98 133 63 84 81 488.830 0.91 130 59 77 74 524.60 0.83 134 61 81 78 560.90 0.96 133 63 84 81 491.900 1.10 127 60 77 74 527.50 1.08 128 62 81 67 563.99 1.18 128 64 83 81 494.720 0.97 131 61 78 75 530.60 1.02 132 62, 82 79 566.90 1.08 132 63 85 82 497.470 0.95 130 61 79 75 533.40 0.87 132 59 83 79 569.92 0.93 132 62 85 82 500.700 1.25 129 62 79 76 536.65 1.23 129 61 82 80 573.10 1.13 130 66 85 82 504.000 1.19 132 62 80 76 539.60 1.28 129 62 83 80 576.00 1.08 132 65 86 83 506.680 1.10 129 64 81 

# n 542.70 1.08 129 64' 84 80 578.86 1.08 131 64 86 83

Total Average Average Average Average Total Average Average,**"Ai(~~~~ ~:r::",**  Average Total Average Average Average ·Average ' Meter Orifice Stack Impinger Meter Meter Orifice Stack Implnger I' '" Meter Meter Orifice Stack Impinger Meter Volume AH. Temp. Temp. Temp. Volume AH. Temp. Temp", ' Temp. Volume AH. Temp. Temp. Temp. Vm. W in H20 (OF) (OF) (OF) Vm, ft· in H20 (OF) 

### ("Fj (OF) Vm. ft' in H20 (OF) (OF) (OF) 35.48 1.1 128 61 75.54 35.70 1.1 130 ·,62'\',':: " 79.25 35.84 1.1 131 63 82.33 Moisture RecoveryData:**MoistllreReOOlierYD~ta:** Moisture Recovery Data: Impinger 1 2 3 Desiccant Total Impinger 1 2 3'''' " ,Desiccant Total Impinger 1 2 3 DesICCant' Total Final 188 112 4 1086 Final 188 110 4 1095 Final 187 117 4 1096 Initial 100 100 0 1079 Initial 100 100 0 1085 Initial 100 100 0 1086 Diff. 88 12 4 7 111 Diff. 88 10. 4 :"". ",; " 10 112 Diff. 87 17 4 10 118 Standard MeterVolume MoistureContent(%v/v) Standard MeterVolume '

.**j~,'""ors.t~j:e:**Cootant(%v/v) Standard MeterVolume MoistureContent(%v/v) 33.14 13.62 33.12 J'; '-I' '13.73 33.06 14.39 Barometric Pressure (in Hg) 28.00 

### I Barometric Pressure (In Hg) 28.00 

### '1' "" Barometric Pressure (il'\ Hg) 28.00 

### I MeterCoefficient 1.0095 MeterCoefficient 1.0095 

## I MeterCoefficient 1.0095 

### ArcelorMittal Minorca Mine Virginia, MN Barr Engineering Co. 9/11/2011



### RESULTS OF STACK MOISTUREAND METERVOLUME DETERMINATIONS

Furnace Stack B (SV015) July20, 2011

RUN 1(835-943)·**~UN** .it.(lU,15"1,"Iit1) ""!l1i;"**'"~,.,** RUN 3(1Ia::»-1.Ju""J Meter Orifice Stacie: Impinger ,: Meter:'·"" Meter Meter Orifice**,Sta~fll., "I~Piri9E!r,** **':"'~!' ,~eter,**  Meter Meter Orifice Stack ", .'mpirige( Meter 'Meter Volume AH, Temp. Temp. I,nlet' Outlet Volume AH,

# 'i~~~:',; , Temp;:"

# :;fui~,**tn~~t·** !**~** • ,
, Outlet Volume AH, Temp. Temp. Inlet Outlet Vm. W in H20 Ts, of (OF) (oF) Vm, W In H20 

## '";'('-f.'{::: , c 

### ' (OF)"

. Vm, W' in H20 Ts, OF (OF) (Of) (OF) , '(OF) 471.20 ., 507.00 543.02 

### , 474.400 1.19 125 69 72 74 510.20 1.27 128 

# 7'2 77 78 546.10 1.17 131 64 80 80 477.300 1.20 126 62 73 72 513.20 1.22 129 61 78 

# n 549.20 1.17 132 62 81 80 480.200 1.10 125 59 75 72 516.20 1.08 126 60 79 77 552.20 1.08 131 61 80 80 483.200 1.10 125 60 75 73 519.12 0.98 128 61 80 78 555.20 1.08 130 64 82 80 486.000 1.04 129 

### 58 76 73 522.00 0.97 133 60 81 78 558.00 0.98 133 63 84 81 488.830 0.91 130 59 77 74 524.60 0.83 134 61 81 78 560.90 0.96 133 63 84 81 491.900 1.10 127 60 77 74 527.50 1.08 128 62 81 67 563.99 1.18 128 64 83 81 494.720 0.97 131 61 78 75 530.60 1.02 132 62, 82 79 566.90 1.08 132 63 85 82 497.470 0.95 130 61 79 75 533.40 0.87 132 59 83 79 569.92 0.93 132 62 85 82 500.700 1.25 129 62 79 76 536.65 1.23 129 61 82 80 573.10 1.13 130 66 85 82 504.000 1.19 132 62 80 76 539.60 1.28 129 62 83 80 576.00 1.08 132 65 86 83 506.680 1.10 129 64 81 

# n 542.70 1.08 129 64' 84 80 578.86 1.08 131 64 86 83

Total Average Average Average Average Total Average Average,**"Ai(~~~~**

# '>"",' Average Total Average Average Average ·Average ' Meter Orifice Stack Impinger Meter Meter Orifice Stack Implnger Meter Meter Orifice Stack Impinger Meter Volume AH. Temp. Temp. Temp. Volume AH. Temp. Temp", ' Temp. Volume AH. Temp. Temp. Temp. Vm. W in H20 (OF) (OF) (OF) Vm, ft· in H20 (OF) 

### ("Fj (OF) Vm. ft' in H20 (OF) (OF) (OF) 35.48 1.1 128 61 75.54 35.70 1.1 130 ,',62'\',':: 79.25 35.84 1.1 131 63 82.33 Moisture RecoveryData:**MoistllreReOOlierY.D~ta:** ' Moisture Recovery Data: Impinger 1 2 3 Desiccant Total Impin9..er 1 2 3'" " " .Desiccant Total Impinger 1 2 3 DesICCant' Total Final 188 112 4 1086 Final 188 110 4 1095 Final 187 117 4 1096 Initial 100 100 0 1079 Initial 100 100 0 1085 Initial 100 100 0 1086 Diff. 88 12 4 7 111 Diff. 88 10. 4**:~** •••••

'C••

# ",:' " 10 112 Diff. 87 17 4 10 118 Standard MeterVolume MoistureContent(%v/v) Standard MeterVolume '**·j~,'""ol~Wj:e:CQ{ltent** (%v/v) Standard MeterVolume MoistureContent(%v/v) 33.14 13.62 33.12 J'; '-I' '13.73 33.06 14.39 Barometric Pressure (in Hg) 28.00 

### I Barometric Pressure (in Hg) 28.00' 

### 'I, 'c:' , Barometric Pressure (ill Hal 28.00 

### J MeterCoefficient 1.0095 

## I MeterCoefficient 1.0095 MeterCoefficient 1.0095

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM

------ 

### DSCFM Furnace Stack C (SV016)



## Results of Sulfur Dioxide Test Run 1 7/20/2011

1450-1557

157,870 132,270 112,480 

## Barr Engineering Co. March 28, 2012

Run 2 Run 3 7/20/2011 7/20/2011

1015-1122 1327-1433

163,380 166,920 138,840 141,360 120,340 121,920**~** _.-------- - ------------ ._- ---



### Bias Corrected Concentrations

O2

### ,% 18.3 18.4 18.3

------



### CO2

### ,% 2.2 2.3 2.3 S02, ppm-dry 2.7 5.8 3.5

--- 

### Emission Rate**--.-~**



### S02, Ib/hr (S02, ppm) *(64/24.04)*(6.242*10A-8)*60*DSCFM 2.2 5.0 3.1 *Airflowdatafrom lead test 

## ArcelorMittal Minorca Mine Virginia, Minnesota

Parameter Test Date
Run time
VolumetricAirflow Rates*

ACFM SCFM

------- 

### DSCFM Furnace Stack C (SV016)



## Results of Sulfur Dioxide Test Run 1 7/20/2011

1450-1557

157,870 132,270 112,480 

## Barr Engineering Co. March 28, 2012

Run 2 Run 3 7/20/2011 7/20/2011

1015-1122 1327-1433

163,380 166,920 138,840 141,360 120,340 121,920 r------ ._-------. - ._--_._._-_. ._- ---



### Bias Corrected Concentrations

O2

### ,% 18.3 18.4 18.3
-_._-- 

### CO2

### ,% 2.2 2.3 2.3 S02, ppm-dry 2.7 5.8 3.5 f---- 

### Emission Rate**----~**



### S02, Ib/hr (S02, ppm) *(64/24.04)*(6.242*10A-8)*60*DSCFM 2.2 5.0 3.1 *Airflowdatafrom lead testFacility City. State: Project Name: Source: StackVent

### # Test Date:

Facility City. State: Project Name: Source: StackVent

### # Test Date:

### ArcelorMittal Virginia, Minnesota Barr Engineering Co. September 11, 2011

RESULTS OF STACK MOISTUREAND METERVOLUME DETERMINATIONS

Furnace Stack C

Test Dates: 7/20-2112011

RUN 17/2011 (1450-1557)

...**>::~,h >~**  RUN 21121111(101.5-1122)', 

# .. '

.. ",

# ."; :',,'

, ",' . ,.. R"'

.... 3 1121111 (1321-1433) Meter Orifice Stack Impinger Meter' Meter 'Meter';' Orifice Stack

. Implnget ' .-[:!Meter',,,, ,,"," :·",Meter· :**>~Meter** +Orifice,.· :. 'Stack Impinger Meter Meter Volume l\H, Temp. Temp. Inlet Outlet Volume:, AH, Temp. Temp,

. Inlel:< :'(jj,Jtlet'

### :Voluil:i~ 

## ':.··.AH·".'

. Temp. Temp. Inlet Outlet

.. Vm, ft· in H20 Ts, OF (OF)**(~F)** (OF) Vm, ft",,jri H2 O Ts, OF (OF) 

## ·i

.**(OF):j~~'** (OF):;' ·Nm,:.fi 

# ";jnH;o:, Ts, OF (OF) (OF) (OF) "

.. 579.10**I~":'::f:l:** 602.80 636.40 581.300 0.53 127 68 82 82 605.70 1.03 124 65 72 72 639.33 1.08 125 69 73 73 583.500 0.52 124 67 82 82 608.33 0.97 125 65 73 72 642.15 0.98 125 68 72 73 585.100 0.38 127 66 82 82 610.84 0.79 123 62 74 72 644.60 0.80 125 60 73 73 586.900 0.43 127 65 83 82 613.55 0.97 124 65 74 73 647.50 1.02 125 63 74 73 588.800 0.42 127 64 83 82 616.30 0.83 123 58 75 74 650.30 0.88 125 60 75 ' 74 590.550 0.38 128 63 84 82 618.73 0.76 125 58 75 73 652.70 0.75 126 60 75 74 592.700 0.53 127 66 84 83 621.69 1.03 124 61 75 74 655.60 1.13 126 63 74 75 594.600 0.47 128 65 

### 85 83 624.30 1.06 124 60 76 73 658.30 1.08 126 63 77 75 596.470 0.44 129 63 89 84 627.04 0.83 124 61 77 74 661.17 0.88 127 63 78 75 598.610 0.58 130 61 84 84 630.10 1.12 123 61 77 75 664.20 1.13 126 64 77 75 600.650 0.53 130 65 86 84 632.80 1.04 122 60 77 75 667.30 1.17 126 63 79 76 602.600 0.44 130 64 86 84 635.60 0.91 124 61 78 75, 670.00 0.97 127 64 79 76

Total Average Average Average Average Average Average Average**Ave~g~** , Total Average Average Average Average Meter Orifice Stack Impinger Meter Meter Orifice Stack Impinger Meter Meter Orifice Stack Impinger Meter Volume l\H, Temp. Temp. Temp. Volume l\H, Temp. Temp. Temp. Volume AH, Temp. Temp. Temp. Vm, ft· in H20 (OF) (OF) ""eF) Vm, ft" 'nH2O (OF) (OF) (OF),. , Vm,**ft~** in H20 (OF) (OF) (OF) 23.50 0.5 128 65 83.50 32.80 0.9 124 61 74.38 33.60 1.0 126 63 74.92 Moisture Recovery Data: Moisture Recovery Data: 

# .. Moisture Recovery Data: Impinger 1 2 3 DesiCcant Total Impinger 1 2 3 DesIcCant TOIaI: Impll1ger 1 2 3 Desiccant Total Final 178 106 4 1101 Final 180 111 4 1105 0- Final 186 114 3 1064 Initial 100 100 0 1095 Initial 100 100 0 1095 inilial 100 100 0 1060 Diff. 78 6 4 6 94 Diff. 80 11 4 10 .', 1.05

.. 

### Diff. 66 14 3 4 107 Standard MeterVolume MoistureContent(%vJv)

.. Standard MeterVolume MoistureContent(%v/v) " . Standard MeterVolume MoistureContent(%vJv) 21.56 17.03 :. 30.86 13.81 31:58 13.75 Barometric Pressure (in Hg) 27.95 

### I Barometric Pressure (in Hg) 28.15 

### I Baror(1etricPtes$ure (in Hg) 28.15 

### I Meter Coefficient 1.0095 MeterCoefficient 1.0095

- '--- MeterCoefficient -.J.0095 

## I

- .. -_. --- - -- -- 

### ArcelorMittal Virginia, Minnesota Barr Engineering Co. September 11, 2011

RESULTS OF STACK MOISTUREAND METER VOLUME DETERMINATIONS

Furnace Stack C

Test Dates: 7/20-2112011

RUN 17/2011 (1450-1557)

...**>::~,h >~**  . . RUN 21121111(101.5-1122)**~'** ,- .'

..·C, :, 

### I:'';': ;,.,

. , ,.,R"'

.... 3 1121111 (1321-1433) Meter Orifice Stack Implnger Meter' Meter ' Meter:,' Orifice Stack ' Implnget " ",[,!Meter',,,, "C',' :"',Meter, :**>~Meter,·.,** ;Qrifice,·

.Stack Impinger Meter Meter Volume l\H, Temp. Temp. Inlet Outlet Volume:, l\H, Temp. Temp,

.**Inl~I:<'** ·:·O\.ltlel"

### :Voluil:i~

### '~•.'. AH":,'

. Temp. Temp. Inlet Outlet

.. Vm, ft· in H20 Ts, OF (OF)**(~F)** (OF) Vr'tl"·ft",,, ,jri H2 O Ts, OF (OF) 

## i '(OF) "j,lt'

.. (OF) ·Nm,:.fi 

# ";jnH;o:, ,Ts,OF 

# I (OF) (OF) (OF) 

# .

, 

### " 579.10**I~":"** 602.80 636.40 581.300 0.53 127 68 82 82 605.70 1.03 124 65 72 72 639.33 1.08 125 69 73 73 583.500 0.52 124 67 82 82 608.33 0.97 125 65 73 72 642.15 0.98 125 68 72 73 585.100 0.38 127 66 82 82 610.84 0.79 123 62 74 72 644.60 0.80 125 60 73 73 586.900 0.43 127 65 83 82 613.55 0.97 124 65 74 73 647.50 1.02 125 63 74 73 588.800 0.42 127 64 83 82 616.30 0.83 123 58 75 74 650.30 0.88 125 60 75 ' 74 590.550 0.38 128 63 84 82 618.73 0.76 125 58 75 73 652.70 0.75 126 60 75 74 592.700 0.53 127 66 84 83 621.69 1.03 124 61 75 74 655.60 1.13 126 63 74 75 594.600 0.47 128 65 

### 85 83 624.30 1.06 124 60 76 73 658.30 1.08 126 63 77 75 596.470 0.44 129 63 89 84 627.04 0.83 124 61 77 74 661.17 0.88 127 63 78 75 598.610 0.58 130 61 84 84 630.10 1.12 123 61 77 75 664.20 1.13 126 64 77 75 600.650 0.53 130 65 86 84 632.80 1.04 122 60 77 75 667.30 1.17 126 63 79 76 602.600 0.44 130 64 86 84 635.60 0.91 124 61 78 75, 670.00 0.97 127 64 79 76

Total Average Average Average Average Average Average Average Ave

...**g~** , Total Average Average Average Average Meter Orifice Stack Impinger Meter Meter Orifice Stack Impinger Meter Meter Orifice Stack Impinger Meter Volume l\H, Temp. Temp. Temp. Volume l\H, Temp. Temp. Temp. Volume AH, Temp. Temp. Temp. Vm, ft· in H20 (OF) (OF) ""eF) Vm, ft" 'nH2O (OF) (OF) (OF), ' Vm,**ft~** in H20 (OF) (OF) (OF) 23.50 0.5 128 65 83.50 32.80 0.9 124 61 74.38 33.60 1.0 126 63 74.92 Moisture Recovery Data: Moisture Recovery Data: 

# .. Moisture Recovery Data: Impinger 1 2 3 DesiCcant Total Impinger 1 2 3 DesIcCant TOIaI:**Impll1!~er** 1 2 3 Desiccant Total Final 178 106 4 1101 Final 180 111 4 1105 0- Final 186 114 3 1064 Initial 100 100 0 1095 Initial 100 100 0 1095 inilial 100 100 0 1060 Diff. 78 6 4 6 94 Diff. 80 11 4 10 .',1.05



### .. Diff. 66 14 3 4 107 Standard MeterVoiume MoistureContent(%vJv)

.. Standard MeterVolume MoistureContent(%'i/v)

. I,·' • Standard MeterVolume MoistureContent(%vJv) 21.56 17.03 30.86 13.81 31:58 13.75 Barometric Pressure (in Hg) 27.95 

### I Barometric Pressure (in Hg) 28.15 

### I Baror(1etricPtes$ure (in Hg) 28.15 

### I Meter Coefficient 1.0095 MeterCoefficient 1.0095 MeterCoefficient 1.0095

### Facility City. State: Project Name: Source: ' , Stack.Vent

### #

TestDate:

.

Facility City. State: Project Name: Source: ' , Stack.Vent

### #

Test Date:

### ArcelorMittal Virginia, Minnesota

RESULTS OF STACK MOISTUREAND METER VOLUME DETERMINATIONS

Furnace Stack D (SV017)

Test Dates: 7121/2011 

### Barr Engineering Co. September 11, 2011 ArcelorMittal Virginia, Minnesota

RESULTS OF STACK MOISTUREAND METER VOLUME DETERMINATIONS

Furnace Stack D (SV017)

Test Dates: 7121/2011 

### Barr Engineering Co. September 11, 2011

# Appendix C

InstrumentOutputArcelorMiltal Minorca Mine Virginia. Minnesota
Average Analyzer Results Run 

### °2.%

1 19.4 2 19.4 3 19.4

TIMESTAMP 

### °2.% 7/19/20117:42:40 0.0 7/19/20117:43:00 0.0 7/19/20117:43:20 0.0 7/19/20117:43:40 0.0 7/19/20117:44:00 0.0 7/19/20117:44:20 0.0 7/19/20117:44:40 0.0 7/19/20117:45:00 0.0 7/19/20117:45:20 0.5 7/19/20117:45:40 1.6 7/19/20117:46:00 0.0 7/19/20117:46:20 0.0 7/19/20117:46:40 0.0 7/19/20117:47:00 0.0 7/19/20117:47:20 0.0 7/19/20117:47:40 0.0 7/19/20117:48:00 0.0 7/19/20117:48:20 0.0 7/19/20117:48:40 0.3 7/19/20117:49:00 0.1 7/19/20117:49:20 0.0 7/19/20117:49:40 0.0 7/19/20117:50:00 0.0 7/19/20117:50:20 0.0 7/19/20117:50:40 0.0 7/19/20117:51:00 15.0 7/19/20117:51:20 21.8 7/19/20117:51:40 21.8 7/19/20117:52:00 21.8 7/19/20117:52:20 21.8 7/19/20117:52:40 21.8 7/19/20117:53:00 21.8 7/19/20117:53:20 21.8 7/19/20117:53:40 21.8 7/19/20117:54:00 21.9 7/19/20117:54:20 21.9 7/19/20117:54:40 17.2 7/19/20117:55:00 9.0 7/19/20117:55:20 9.0 7/19/20117:55:40 9.0 7/19/20117:56:00 9.0 7/19/20117:56:20 9.0 7/19/20117:56:40 2.7 7/19/20117:57:00 0.0 7/19/20117:57:20 0.0 7/19/20117:57:40 0.0 7/19/20117:58:00 0.0 7/19/20117:58:20 0.0 7/19/20117:58:40 0.0 7/19/20117:59:00 0.0 7/19/20117:59:20 0.0 7/19/20117:59:40 0.0 7/19/20118:17:40 20.7 7/19/20118:18:00 20.7 7/19/20118:18:20 20.7 7/19/20118:18:40 19.9 7/19/20118:19:00 20.7 7/19/20118:19:20 14.1 Data LoggerOutput Test Date 7/19/11 Fumace Stack A

CO

### 2 • % 50

### 2 •ppm 1.2 5.4 1.3 5.8 1.3 6.2

CO

### 2 • % 50

### 2 •ppm 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 -0.2 0.0 -0.1 0.0 -0.1 0.0 -0.1 0.0 -0.1 0.0 11.1 0.0 42.5 0.0 46.7 0.0 47.7 0.0 47.4 0.0 48.7 0.0 50.5 0.0 50.1 0.0 50.2 0.0 49.9 0.0 28.0 0.0 25.7 0.0 27.0 0.0 27.0 0.0 27.2 0.0 27.1 3.2 23.9 5.4 4.4 5.4 -0.5 5.5 -0.7 5.5 -0.7 5.5 -0.7 5.5 -0.8 5.5 -0.7 5.5 -0.7 5.5 -0.8 5.5 -0.8 6.3 -0.8 9.0 -0.8 9.1 -0.7 9.1 -0.7 9.1 -0.7 9.1 -0.7 1.8 -0.6 0.1 -0.5 0.1 -0.4 0.1 -0.4 0.0 -0.2 0.0 0.0 0.0 0.1 0.0 0.0 0.0 -0.1 0.0 -0.1 0.0 -0.9 0.0 -0.8 0.0 -0.8 0.0 -0.8 0.0 -0.8 0.6 -0.8

Page 1of 17 Run Times 850-1000 1045-1152 1225-1336

Notes Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal N2 Zero Analyzer Cal Analyzer Cal N2 Zero Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal 50250.2 ppm Analyzer Cal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal 50227.0 ppm Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal 0221.9/C02 5.5 Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal 02 9.0/C02 9.0 Analyzer Cal AnalyzerCal Analyzer Cal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal

System Bias Check System Bias Check System Bias Check Barr Engineering 9/10/2011 ArcelorMiltal Minorca Mine Virginia. Minnesota
Average Analyzer Results Run 

### °2.%

1 19.4 2 19.4 3 19.4

TIMESTAMP 

### °2.% 7/19/20117:42:40 0.0 7/19/20117:43:00 0.0 7/19/20117:43:20 0.0 7/19/20117:43:40 0.0 7/19/20117:44:00 0.0 7/19/20117:44:20 0.0 7/19/20117:44:40 0.0 7/19/20117:45:00 0.0 7/19/20117:45:20 0.5 7/19/20117:45:40 1.6 7/19/20117:46:00 0.0 7/19/20117:46:20 0.0 7/19/20117:46:40 0.0 7/19/20117:47:00 0.0 7/19/20117:47:20 0.0 7/19/20117:47:40 0.0 7/19/20117:48:00 0.0 7/19/20117:48:20 0.0 7/19/20117:48:40 0.3 7/19/20117:49:00 0.1 7/19/20117:49:20 0.0 7/19/20117:49:40 0.0 7/19/20117:50:00 0.0 7/19/20117:50:20 0.0 7/19/20117:50:40 0.0 7/19/20117:51:00 15.0 7/19/20117:51:20 21.8 7/19/20117:51:40 21.8 7/19/20117:52:00 21.8 7/19/20117:52:20 21.8 7/19/20117:52:40 21.8 7/19/20117:53:00 21.8 7/19/20117:53:20 21.8 7/19/20117:53:40 21.8 7/19/20117:54:00 21.9 7/19/20117:54:20 21.9 7/19/20117:54:40 17.2 7/19/20117:55:00 9.0 7/19/20117:55:20 9.0 7/19/20117:55:40 9.0 7/19/20117:56:00 9.0 7/19/20117:56:20 9.0 7/19/20117:56:40 2.7 7/19/20117:57:00 0.0 7/19/20117:57:20 0.0 7/19/20117:57:40 0.0 7/19/20117:58:00 0.0 7/19/20117:58:20 0.0 7/19/20117:58:40 0.0 7/19/20117:59:00 0.0 7/19/20117:59:20 0.0 7/19/20117:59:40 0.0 7/19/20118:17:40 20.7 7/19/20118:18:00 20.7 7/19/20118:18:20 20.7 7/19/20118:18:40 19.9 7/19/20118:19:00 20.7 7/19/20118:19:20 14.1 Data LoggerOutput Test Date 7/19/11 Fumace Stack A

CO

### 2 • % 50

### 2 •ppm 1.2 5.4 1.3 5.8 1.3 6.2

CO

### 2 • % 50

### 2 •ppm 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 -0.2 0.0 -0.1 0.0 -0.1 0.0 -0.1 0.0 -0.1 0.0 11.1 0.0 42.5 0.0 46.7 0.0 47.7 0.0 47.4 0.0 48.7 0.0 50.5 0.0 50.1 0.0 50.2 0.0 49.9 0.0 28.0 0.0 25.7 0.0 27.0 0.0 27.0 0.0 27.2 0.0 27.1 3.2 23.9 5.4 4.4 5.4 -0.5 5.5 -0.7 5.5 -0.7 5.5 -0.7 5.5 -0.8 5.5 -0.7 5.5 -0.7 5.5 -0.8 5.5 -0.8 6.3 -0.8 9.0 -0.8 9.1 -0.7 9.1 -0.7 9.1 -0.7 9.1 -0.7 1.8 -0.6 0.1 -0.5 0.1 -0.4 0.1 -0.4 0.0 -0.2 0.0 0.0 0.0 0.1 0.0 0.0 0.0 -0.1 0.0 -0.1 0.0 -0.9 0.0 -0.8 0.0 -0.8 0.0 -0.8 0.0 -0.8 0.6 -0.8

Page 1of 17 Run Times 850-1000 1045-1152 1225-1336

Notes Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal N2 Zero Analyzer Cal Analyzer Cal N2 Zero Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal 50250.2 ppm Analyzer Cal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal 50227.0 ppm Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal 0221.9/C02 5.5 Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal 02 9.0/C02 9.0 Analyzer Cal AnalyzerCal Analyzer Cal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal

System Bias Check System Bias Check System Bias Check Barr Engineering 9/10/2011ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Fumace Stack A

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/20118:19:40 0.2 0.0 -0.7 System Bias Check 7/19/20118:20:00 0.1 0.0 -{l.5 System Bias Check 7/19/20118:20:20 0.0 0.0 -0.3 System Bias Check 7/19/20118:20:40 0.0 0.0 0.0 System Bias Check 7/19/20118:21:00 0.0 0.0 0.4 N2Zero System Bias Check 7/19/20118:21:20 0.0 0.0 0.5 System Bias Check 7/19/20118:21:40 0.0 0.0 0.4 System Bias Check 7/19/20118:22:00 0.0 0.0 0.3 System Bias Check 7/19/20118:22:20 5.0 3.2 0.2 System Bias Check 7/19/20118:22:40 8.8 8.7 -0.2 System Bias Check 7/19/20118:23:00 8.8 8.8 -0.6 System Bias Check 7/19/20118:23:20 8.9 9.0 -0.7 System Bias Check 7/19/20118:23:40 8.9 9.0 -0.7 02 9.0/C02 9.0 System Bias Check 7/19/20118:24:00 8.9 9.0 -0.7 System Bias Check 7/19/20118:24:20 9.1 8.9 -0.7 System BiasCheck 7/19/20118:24:40 2.8 2.7 -0.2 System Bias Check 7/19/20118:25:00 0.0 0.2 11.0 System Bias Check 7/19/20118:25:20 0.0 0.1 21.5 System Bias Check 7/19/20118:25:40 0.0 0.1 25.4 System Bias Check 7/19/20118:26:00 0.0 0.1 26.7 System Bias Check 7/19/20118:26:20 0.0 0.1 26.8 System Bias Check 7/19/20118:26:40 0.0 0.1 26.9 S0227.0 ppm System Bias Check 7/19/20118:27:00 4.7 0.1 27.6 System Bias Check 7/19/20118:27:20 16.3 0.1 28.1 System Bias Check 7/19/20118:27:40 0.2 0.0 15.5 System Bias Check 7/19/20118:28:00 0.0 0.0 5.4 System Bias Check 7/19/20118:28:20 0.0 0.0 4.3 System Bias Check 7/19/20118:28:40 0.0 0.0 4.5 System Bias Check 7/19/20118:29:00 0.0 0.0 4.5 System Bias Check 7/19/20118:29:20 0.0 0.0 4.6 System Bias Check 7/19/20118:29:40 0.0 0.0 4.6 System Bias Check 7/19/20118:30:00 0.0 0.0 4.6 System Bias Check 7/19/20118:30:20 0.0 0.0 4.7 System Bias Check 7/19/20118:30:40 0.0 0.0 4.7 System Bias Check 7/19/20118:31:00 0.0 0.0 4.7 System Bias Check 7/19/20118:31:20 0.0 0.0 4.7 System Bias Check 7/19/20118:31:40 0.0 0.0 4.8 System Bias Check 7/19/20118:32:00 7.6 0.5 4.8 System Bias Check 7/19/20118:32:20 19.5 1.2 4.8 System Bias Check 7/19/20118:32:40 19.6 1.2 5.3 System Bias Check 7/19/20118:33:00 19.6 1.2 5.7 System Bias Check 7/19/20118:33:20 19.6 1.2 5.5 System Bias Check 7/19/20118:33:40 19.6 1.2 5.3 System Bias Check 7/19/20118:34:00 19.6 1.2 5.2 System Bias Check 7/19/20118:34:20 19.6 1.2 4.9 System Bias Check 7/19/20118:34:40 19.5 1.2 4.8 System Bias Check 7/19/20118:35:00 18.7 1.2 4.7 System Bias Check 7/19/20118:35:20 1.0 0.1 4.3 System Bias Check 7/19/20118:35:40 0.0 0.0 2.9 System Bias Check 7/19/20118:36:00 0.0 0.0 1.1 System Bias Check 7/19/20118:36:20 0.0 0.0 0.3 System Bias Check 7/19/20118:36:40 0.0 0.0 0.4 System Bias Check 7/19/20118:37:00 0.0 0.0 0.6 System Bias Check 7/19/20118:37:20 1.6 0.1 0.7 System Bias Check 7/19/20118:37:40 18.7 1.2 1.3 System Bias Check 7/19/20118:38:00 19.4 1.2 3.5 System Bias Check 7/19/20118:38:20 19.4 1.2 5.4 In Stack 7/19/20118:38:40 19.5 1.2 5.7 In Stack 7/19/20118:39:00 19.5 1.2 5.8 In Stack 7/19/20118:39:20 19.5 1.1 6.2 In Stack 7/19/20118:39:40 19.5 1.1 6.4 In Stack 7/19/20118:40:00 19.5 1.1 6.5 In Stack 7/19/20118:40:20 19.5 1.1 6.7 In Stack

Page 2of 17 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Fumace Stack A

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/20118:19:40 0.2 0.0 -0.7 System Bias Check 7/19/20118:20:00 0.1 0.0 -{l.5 System Bias Check 7/19/20118:20:20 0.0 0.0 -0.3 System Bias Check 7/19/20118:20:40 0.0 0.0 0.0 System Bias Check 7/19/20118:21:00 0.0 0.0 0.4 N2Zero System Bias Check 7/19/20118:21:20 0.0 0.0 0.5 System Bias Check 7/19/20118:21:40 0.0 0.0 0.4 System Bias Check 7/19/20118:22:00 0.0 0.0 0.3 System Bias Check 7/19/20118:22:20 5.0 3.2 0.2 System Bias Check 7/19/20118:22:40 8.8 8.7 -0.2 System Bias Check 7/19/20118:23:00 8.8 8.8 -0.6 System Bias Check 7/19/20118:23:20 8.9 9.0 -0.7 System Bias Check 7/19/20118:23:40 8.9 9.0 -0.7 02 9.0/C02 9.0 System Bias Check 7/19/20118:24:00 8.9 9.0 -0.7 System Bias Check 7/19/20118:24:20 9.1 8.9 -0.7 System BiasCheck 7/19/20118:24:40 2.8 2.7 -0.2 System Bias Check 7/19/20118:25:00 0.0 0.2 11.0 System Bias Check 7/19/20118:25:20 0.0 0.1 21.5 System Bias Check 7/19/20118:25:40 0.0 0.1 25.4 System Bias Check 7/19/20118:26:00 0.0 0.1 26.7 System Bias Check 7/19/20118:26:20 0.0 0.1 26.8 System Bias Check 7/19/20118:26:40 0.0 0.1 26.9 S0227.0 ppm System Bias Check 7/19/20118:27:00 4.7 0.1 27.6 System Bias Check 7/19/20118:27:20 16.3 0.1 28.1 System Bias Check 7/19/20118:27:40 0.2 0.0 15.5 System Bias Check 7/19/20118:28:00 0.0 0.0 5.4 System Bias Check 7/19/20118:28:20 0.0 0.0 4.3 System Bias Check 7/19/20118:28:40 0.0 0.0 4.5 System Bias Check 7/19/20118:29:00 0.0 0.0 4.5 System Bias Check 7/19/20118:29:20 0.0 0.0 4.6 System Bias Check 7/19/20118:29:40 0.0 0.0 4.6 System Bias Check 7/19/20118:30:00 0.0 0.0 4.6 System Bias Check 7/19/20118:30:20 0.0 0.0 4.7 System Bias Check 7/19/20118:30:40 0.0 0.0 4.7 System Bias Check 7/19/20118:31:00 0.0 0.0 4.7 System Bias Check 7/19/20118:31:20 0.0 0.0 4.7 System Bias Check 7/19/20118:31:40 0.0 0.0 4.8 System Bias Check 7/19/20118:32:00 7.6 0.5 4.8 System Bias Check 7/19/20118:32:20 19.5 1.2 4.8 System Bias Check 7/19/20118:32:40 19.6 1.2 5.3 System Bias Check 7/19/20118:33:00 19.6 1.2 5.7 System Bias Check 7/19/20118:33:20 19.6 1.2 5.5 System Bias Check 7/19/20118:33:40 19.6 1.2 5.3 System Bias Check 7/19/20118:34:00 19.6 1.2 5.2 System Bias Check 7/19/20118:34:20 19.6 1.2 4.9 System Bias Check 7/19/20118:34:40 19.5 1.2 4.8 System Bias Check 7/19/20118:35:00 18.7 1.2 4.7 System Bias Check 7/19/20118:35:20 1.0 0.1 4.3 System Bias Check 7/19/20118:35:40 0.0 0.0 2.9 System Bias Check 7/19/20118:36:00 0.0 0.0 1.1 System Bias Check 7/19/20118:36:20 0.0 0.0 0.3 System Bias Check 7/19/20118:36:40 0.0 0.0 0.4 System Bias Check 7/19/20118:37:00 0.0 0.0 0.6 System Bias Check 7/19/20118:37:20 1.6 0.1 0.7 System Bias Check 7/19/20118:37:40 18.7 1.2 1.3 System Bias Check 7/19/20118:38:00 19.4 1.2 3.5 System Bias Check 7/19/20118:38:20 19.4 1.2 5.4 In Stack 7/19/20118:38:40 19.5 1.2 5.7 In Stack 7/19/20118:39:00 19.5 1.2 5.8 In Stack 7/19/20118:39:20 19.5 1.1 6.2 In Stack 7/19/20118:39:40 19.5 1.1 6.4 In Stack 7/19/20118:40:00 19.5 1.1 6.5 In Stack 7/19/20118:40:20 19.5 1.1 6.7 In Stack

Page 2of 17ArcelorMittal Minorca Mine Virginia. Minnesota

TIMESTAMP 7/19/20118:40:40 7/19/20118:41:00 7/19/20118:41:20 7/19/20118:41:40 7/19/20118:42:00 7/19/20118:42:20 7/19/20118:42:40 7/19/20118:43:00 7/19/20118:43:20 7/19/20118:43:40 7/19/20118:44:00 7/19/20118:44:20 7/19/20118:44:40 7/19/20118:45:00 7/19/20118:45:20 7/19/20118:45:40 7/19/20118:46:00 7/19/20118:46:20 7/19/20118:46:40 7/19/20118:47:00 7/19/20118:47:20 7/19/20118:47:40 7/19/20118:48:00 7/19/20118:48:20 7/19/20118:48:40 7/19/20118:49:00 7/19/20118:49:20 7/19/20118:49:40 7/19/20118:50:00 7/19/20118:50:20 7/19/20118:50:40 7/19/20118:51:00 7/19/20118:51:20 7/19/20118:51:40 7/19/20118:52:00 7/19/20118:52:20 7/19/20118:52:40 7/19/20118:53:00 7/19/20118:53:20 7/19/20118:53:40 7/19/20118:54:00 7/19/20118:54:20 7/19/20118:54:40 7/19/20118:55:00 7/19/20118:55:20 7/19/20118:55:40 7/19/20118:56:00 7/19/20118:56:20 7/19/20118:56:40 7/19/20118:57:00 7/19/20118:57:20 7/19/20118:57:40 7/19/20118:58:00 7/19/20118:58:20 7/19/20118:58:40 7/19/20118:59:00 7/19/20118:59:20 7/19/20118:59:40 7/19/20119:00:00 7/19/20119:00:20 7/19/20119:00:40 7/19/20119:01:00 7/19/20119:01:20 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.3 19.4 19.4 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.3 19.4 19.4 19.4 19.4 19.4 19.3 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 Data LoggerOutput Test Date 7/19/11 Fumace Stack A

S02. ppm Notes 6.9 In Stack 1.0 In Stack 7.1 In Stack 6.9 In Stack 6.7 In Stack 6.5 In Stack 6.3 In Stack 6.1 In Stack 6.1 In Stack 6.1 In Stack 6.1 In Stack 6.2 In Stack 6.1 In Stack 6.2 In Stack 6.2 In Stack 6.3 In Stack 6.4 In Stack 6.4 In Stack 6.5 In Stack 6.5 In Stack 6.6 In Stack 6.7 In Stack 6.7 In Stack 6.7 In Stack 6.7 In Stack 6.7 In Stack 6.5 In Stack 6.5 In Stack 6.5 Run 1 6.4 Run 1 6.2 Run 1 6.1 Run 1 5.8 Run 1 5.7 Run 1 5.6 Run 1 5.5 Run 1 5.4 Run 1 5.4 Run 1 5.5 Run 1 5.4 Run 1 5.1 Run 1 4.9 Run 1 4.6 Run 1 4.2 Run 1 3.9 Run 1 3.8 Run 1 3.7 Run 1 3.6 Run 1 3.5 Run 1 3.5 Run 1 3.4 Run 1 3.4 Run 1 3.4 Run 1 3.5 Run 1 3.4 Run 1 3.4 Run 1 3.5 Run 1 3.6 Run 1 3.5 Run 1 3.5 Run 1 3.6 Run 1 3.6 Run 1 3.6 Run 1

Page 3of 17 Point B Point B Point B PointB PointB PointB PointB Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B PointB Point B Point B Point B Point B Barr Engineering 9/10/2011 ArcelorMittal Minorca Mine Virginia. Minnesota

TIMESTAMP 7/19/20118:40:40 7/19/20118:41:00 7/19/20118:41:20 7/19/20118:41:40 7/19/20118:42:00 7/19/20118:42:20 7/19/20118:42:40 7/19/20118:43:00 7/19/20118:43:20 7/19/20118:43:40 7/19/20118:44:00 7/19/20118:44:20 7/19/20118:44:40 7/19/20118:45:00 7/19/20118:45:20 7/19/20118:45:40 7/19/20118:46:00 7/19/20118:46:20 7/19/20118:46:40 7/19/20118:47:00 7/19/20118:47:20 7/19/20118:47:40 7/19/20118:48:00 7/19/20118:48:20 7/19/20118:48:40 7/19/20118:49:00 7/19/20118:49:20 7/19/20118:49:40 7/19/20118:50:00 7/19/20118:50:20 7/19/20118:50:40 7/19/20118:51:00 7/19/20118:51:20 7/19/20118:51:40 7/19/20118:52:00 7/19/20118:52:20 7/19/20118:52:40 7/19/20118:53:00 7/19/20118:53:20 7/19/20118:53:40 7/19/20118:54:00 7/19/20118:54:20 7/19/20118:54:40 7/19/20118:55:00 7/19/20118:55:20 7/19/20118:55:40 7/19/20118:56:00 7/19/20118:56:20 7/19/20118:56:40 7/19/20118:57:00 7/19/20118:57:20 7/19/20118:57:40 7/19/20118:58:00 7/19/20118:58:20 7/19/20118:58:40 7/19/20118:59:00 7/19/20118:59:20 7/19/20118:59:40 7/19/20119:00:00 7/19/20119:00:20 7/19/20119:00:40 7/19/20119:01:00 7/19/20119:01:20 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.3 19.4 19.4 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.3 19.4 19.4 19.4 19.4 19.4 19.3 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 Data LoggerOutput Test Date 7/19/11 Fumace Stack A

S02. ppm Notes 6.9 In Stack 1.0 In Stack 7.1 In Stack 6.9 In Stack 6.7 In Stack 6.5 In Stack 6.3 In Stack 6.1 In Stack 6.1 In Stack 6.1 In Stack 6.1 In Stack 6.2 In Stack 6.1 In Stack 6.2 In Stack 6.2 In Stack 6.3 In Stack 6.4 In Stack 6.4 In Stack 6.5 In Stack 6.5 In Stack 6.6 In Stack 6.7 In Stack 6.7 In Stack 6.7 In Stack 6.7 In Stack 6.7 In Stack 6.5 In Stack 6.5 In Stack 6.5 Run 1 6.4 Run 1 6.2 Run 1 6.1 Run 1 5.8 Run 1 5.7 Run 1 5.6 Run 1 5.5 Run 1 5.4 Run 1 5.4 Run 1 5.5 Run 1 5.4 Run 1 5.1 Run 1 4.9 Run 1 4.6 Run 1 4.2 Run 1 3.9 Run 1 3.8 Run 1 3.7 Run 1 3.6 Run 1 3.5 Run 1 3.5 Run 1 3.4 Run 1 3.4 Run 1 3.4 Run 1 3.5 Run 1 3.4 Run 1 3.4 Run 1 3.5 Run 1 3.6 Run 1 3.5 Run 1 3.5 Run 1 3.6 Run 1 3.6 Run 1 3.6 Run 1

Page 3of 17 Point B Point B Point B PointB PointB PointB PointB Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B Point B PointB Point B Point B Point B Point B Barr Engineering 9/10/2011ArcelorMittal Minorca Mine Virginia. Minnesota



### TIMESTAMP 7/19/20119:01:40 7/19/20119:02:00 7/19/20119:02:20 7/19/20119:02:40 7/19/20119:03:00 7/19/20119:03:20 7/19/20119:03:40 7/19/20119:04:00 7/19/20119:04:20 7/19/20119:04:40 7/19/20119:05:00 7/19/20119:05:20 7/19/20119:05:40 7/19/20119:06:00 7/19/20119:06:20 7/19/20119:06:40 7/19/20119:07:00 7/19/20119:07:20 7/19/20119:07:40 7/19/20119:08:00 7/19/20119:08:20 7/19/20119:08:40 7/19/20119:09:00 7/19/20119:09:20 7/19/20119:09:40 7/19/20119:10:00 7/19/20119:10:20 7/19/20119:10:40 7/19/20119:11:00 7/19/20119:11:20 7/19/20119:11:40 7/19/20119:12:00 7/19/20119:12:20 7/19/20119:12:40 7/19/20119:13:00 7/19/20119:13:20 7/19/20119:13:40 7/19/20119:14:00 7/19/20119:14:20 7/19/20119:14:40 7/19/20119:15:00 7/19/20119:15:20 7/19/20119:15:40 7/19/20119:16:00 7/19/20119:16:20 7/19/20119:16:40 7/19/20119:17:00 7/19/20119:17:20 7/19/20119:17:40 7/19/20119:18:00 7/19/20119:18:20 7/19/20119:18:40 7/19/20119:19:00 7/19/20119:19:20 7/19/20119:19:40 7/19/20119:20:00 7/19/20119:20:20 7/19/20119:20:40 7/19/20119:21:00 7/19/20119:21:20 7/19/20119:21:40 7/19/20119:22:00 7/19/20119:22:20 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4**l.~.~** 

### " 

## 19';4 "; ., 

### .ill;4 19.4 19.4 19.6 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3**'i:~~** "1;3



### 1:3 1.3 1.3 1.1 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 Data Logger Output Test Date 7/19/11 Fumace StackA

3.6 3.6 3.6 3.5 3.4 3.4 3.2 3.1 3.3 

## 3:A' 

# "t:Q 4;2' 4.4 4.5 4.5 4.3 4.5 4.7 4.8 4.9 4.9 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.2 5.3 5.3 5.4 5.4 5.3 5.2 5.2 5.2 5.2 5.1 5.1 5.2 5.4 5.4 5.3 5.3 5.3 5.4 5.3 5.3 5.3 5.2 5.2 5.1 5.0 4.8 4.7 4.7 4.7 4.8 4.9 4.9 4.8 4.8

Page 4 of 17 Notes Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1

# ',~~~~~:~::**,pdit:'~f\ange** Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Point B Point B Point B Point B Point B Point B Point B Point B Point B 

### PointS

## ~~$ie 

## PofnfG' PointC Point C PointC Point C PointC Point C PointC PointC PointC PointC PointC PointC PointC Point C Point C PointC PointC PointC Point C Point C PointC POintC PointC POintC PointC Point C Point C Point C Point C PointC PointC PointC PointC Point C Point C Point C PointC PointC PointC Point C PointC PointC PointC PointC Point C Point C PointC PointC PointC Point C Point C Barr Engineering 9/10/2011 ArcelorMittal Minorca Mine Virginia. Minnesota



### TIMESTAMP 7/19/20119:01:40 7/19/20119:02:00 7/19/20119:02:20 7/19/20119:02:40 7/19/20119:03:00 7/19/20119:03:20 7/19/20119:03:40 7/19/20119:04:00 7/19/20119:04:20 7/19/20119:04:40 7/19/20119:05:00 7/19/20119:05:20 7/19/20119:05:40 7/19/20119:06:00 7/19/20119:06:20 7/19/20119:06:40 7/19/20119:07:00 7/19/20119:07:20 7/19/20119:07:40 7/19/20119:08:00 7/19/20119:08:20 7/19/20119:08:40 7/19/20119:09:00 7/19/20119:09:20 7/19/20119:09:40 7/19/20119:10:00 7/19/20119:10:20 7/19/20119:10:40 7/19/20119:11:00 7/19/20119:11:20 7/19/20119:11:40 7/19/20119:12:00 7/19/20119:12:20 7/19/20119:12:40 7/19/20119:13:00 7/19/20119:13:20 7/19/20119:13:40 7/19/20119:14:00 7/19/20119:14:20 7/19/20119:14:40 7/19/20119:15:00 7/19/20119:15:20 7/19/20119:15:40 7/19/20119:16:00 7/19/20119:16:20 7/19/20119:16:40 7/19/20119:17:00 7/19/20119:17:20 7/19/20119:17:40 7/19/20119:18:00 7/19/20119:18:20 7/19/20119:18:40 7/19/20119:19:00 7/19/20119:19:20 7/19/20119:19:40 7/19/20119:20:00 7/19/20119:20:20 7/19/20119:20:40 7/19/20119:21:00 7/19/20119:21:20 7/19/20119:21:40 7/19/20119:22:00 7/19/20119:22:20 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4**l.~.~** 

### " 

## 19';4 "; ., 

### .ill;4 19.4 19.4 19.6 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3**'i:~~** .·1;3



### 1:3 1.3 1.3 1.1 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 Data Logger Output Test Date 7/19/11 Fumace StackA

3.6 3.6 3.6 3.5 3.4 3.4 3.2 3.1 3.3 

## 3:A' 

# "t:Q 4;2' 4.4 4.5 4.5 4.3 4.5 4.7 4.8 4.9 4.9 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.2 5.3 5.3 5.4 5.4 5.3 5.2 5.2 5.2 5.2 5.1 5.1 5.2 5.4 5.4 5.3 5.3 5.3 5.4 5.3 5.3 5.3 5.2 5.2 5.1 5.0 4.8 4.7 4.7 4.7 4.8 4.9 4.9 4.8 4.8

Page 4 of 17 Notes Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1

### ,"Pbit~qll!"g~

### 'po'£t.~llartge



# ..Pdrfliflange Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Run 1 Point B Point B Point B Point B Point B Point B Point B Point B Point B 

### PointS

## ~~$ie 

## PofnfG' PointC Point C PointC Point C PointC Point C PointC PointC PointC PointC PointC PointC PointC Point C Point C PointC PointC PointC Point C Point C PointC POintC PointC POintC PointC Point C Point C Point C Point C PointC PointC PointC PointC Point C Point C Point C PointC PointC PointC Point C PointC PointC PointC PointC Point C Point C PointC PointC PointC Point C Point C Barr Engineering 9/10/2011ArcelorMittal Minorca Mine Virginia. Minnesota

TIMESTAMP 7/19/20119:22:40 7/19/20119:23:00 7/19/20119:23:20 7/19/20119:23:40 7/19/20119:24:00 7/19/20119:24:20 7/19/20119:24:40 7/19/20119:25:00 7/19/20119:25:20 7/19/20119:25:40 7/19/20119:26:00 7/19/20119:26:20 7/19/20119:26:40 7/19/20119:27:00 7/19/20119:27:20 7/19/20119:27:40 7/19/20119:28:00 7/19/20119:28:20 7/19/20119:28:40 7/19/20119:29:00 7/19/20119:29:20 7/19/20119:29:40 7/19/20119:30:00 7/19/20119:30:20 7/19/20119:30:40 7/19/20119:31:00 7/19/20119:31:20 7/19/20119:31:40 7/19/20119:32:00 7/19/20119:32:20 7/19/20119:32:40 7/19/20119:33:00 7/19/20119:33:20 7/19/20119:33:40 7/19/20119:34:00 7/19/20119:34:20 7/19/20119:34:40 7/19/20119:35:00 7/19/20119:35:20 7/19/20119:35:40 7/19/20119:36:00 7/19/20119:36:20 7/19/20119:36:40 7/19/20119:37:00 7/19/20119:37:20 7/19/20119:37:40 7/19/20119:38:00 7/19/20119:38:20 7/19/20119:38:40 7/19/20119:39:00 7/19/20119:39:20 7/19/20119:39:40 7/19/20119:40:00 7/19/20119:40:20 7/19/20119:40:40 7/19/20119:41:00 7/19/20119:41:20 7/19/20119:41:40 7/19/20119:42:00 7/19/20119:42:20 7/19/20119:42:40 7/19/20119:43:00 7/19/20119:43:20 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 Data LoggerOutput Test Date 7/19/11 FurnaceStackA

502. ppm Notes 4.6 Run 1 4.5 Run 1 4.6 Run 1 4.6 Run 1 4.7 Run 1 4.7 Run 1 4.7 Run 1 4.7 Run 1 4.8 Run 1 4.6 Run 1 4.5 Run 1 4.5 Run 1 4.6 Run 1 4.7 Run 1 4.9 Run 1 4.9 Run 1 5.0 Run 1 5.0 Run 1 5.1 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.5 Run 1 5.7 Run 1 5.7 Run 1 5.6 Run 1 5.5 Run 1 5.5 Run 1 5.3 Run 1 5.1 Run 1 5.0 Run 1 5.1 Run 1 5.1 Run 1 4.9 Run 1 4.7 Run 1 4.5 Run 1 4.6 Run 1 4.7 Run 1 4.9 Run 1 4.9 Run 1 4.9 Run 1 5.0 Run 1 5.0 Run 1 5.2 Run 1 5.4 Run 1 5.5 Run 1 5.5 Run 1 5.5 Run 1 5.5 Run 1 5.4 Run 1 5.4 Run 1 5.4 Run 1 5.4 Run 1 5.5 Run 1 5.6 Run 1 5.7 Run 1 5.8 Run 1 5.9 Run 1 6.1 Run 1 6.2 Run 1

Page5of 17 Point C Point C Point C Point C Point C PointC PointC PointC PointC PointC PointC Point C Point C Point C PointC PointC PointC PointC PointC PointC PointC Point C Point C Point C Point C PointC PointC PointC PointC PointC PointC Point C PointC Point C Point C PointC PointC PointC PointC PointC Point C Point C PointC PointC PointC PointC PointC Point C Point C Point C Point C Point C PointC PointC PointC PointC Point C Point C Point C PointC PointC PointC Point C BarrEngineering 9/10/2011 ArcelorMittal Minorca Mine Virginia. Minnesota

TIMESTAMP 7/19/20119:22:40 7/19/20119:23:00 7/19/20119:23:20 7/19/20119:23:40 7/19/20119:24:00 7/19/20119:24:20 7/19/20119:24:40 7/19/20119:25:00 7/19/20119:25:20 7/19/20119:25:40 7/19/20119:26:00 7/19/20119:26:20 7/19/20119:26:40 7/19/20119:27:00 7/19/20119:27:20 7/19/20119:27:40 7/19/20119:28:00 7/19/20119:28:20 7/19/20119:28:40 7/19/20119:29:00 7/19/20119:29:20 7/19/20119:29:40 7/19/20119:30:00 7/19/20119:30:20 7/19/20119:30:40 7/19/20119:31:00 7/19/20119:31:20 7/19/20119:31:40 7/19/20119:32:00 7/19/20119:32:20 7/19/20119:32:40 7/19/20119:33:00 7/19/20119:33:20 7/19/20119:33:40 7/19/20119:34:00 7/19/20119:34:20 7/19/20119:34:40 7/19/20119:35:00 7/19/20119:35:20 7/19/20119:35:40 7/19/20119:36:00 7/19/20119:36:20 7/19/20119:36:40 7/19/20119:37:00 7/19/20119:37:20 7/19/20119:37:40 7/19/20119:38:00 7/19/20119:38:20 7/19/20119:38:40 7/19/20119:39:00 7/19/20119:39:20 7/19/20119:39:40 7/19/20119:40:00 7/19/20119:40:20 7/19/20119:40:40 7/19/20119:41:00 7/19/20119:41:20 7/19/20119:41:40 7/19/20119:42:00 7/19/20119:42:20 7/19/20119:42:40 7/19/20119:43:00 7/19/20119:43:20 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 19.4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 Data LoggerOutput Test Date 7/19/11 FurnaceStackA

502. ppm Notes 4.6 Run 1 4.5 Run 1 4.6 Run 1 4.6 Run 1 4.7 Run 1 4.7 Run 1 4.7 Run 1 4.7 Run 1 4.8 Run 1 4.6 Run 1 4.5 Run 1 4.5 Run 1 4.6 Run 1 4.7 Run 1 4.9 Run 1 4.9 Run 1 5.0 Run 1 5.0 Run 1 5.1 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.3 Run 1 5.5 Run 1 5.7 Run 1 5.7 Run 1 5.6 Run 1 5.5 Run 1 5.5 Run 1 5.3 Run 1 5.1 Run 1 5.0 Run 1 5.1 Run 1 5.1 Run 1 4.9 Run 1 4.7 Run 1 4.5 Run 1 4.6 Run 1 4.7 Run 1 4.9 Run 1 4.9 Run 1 4.9 Run 1 5.0 Run 1 5.0 Run 1 5.2 Run 1 5.4 Run 1 5.5 Run 1 5.5 Run 1 5.5 Run 1 5.5 Run 1 5.4 Run 1 5.4 Run 1 5.4 Run 1 5.4 Run 1 5.5 Run 1 5.6 Run 1 5.7 Run 1 5.8 Run 1 5.9 Run 1 6.1 Run 1 6.2 Run 1

Page5of 17 Point C Point C Point C Point C Point C PointC PointC PointC PointC PointC PointC Point C Point C Point C PointC PointC PointC PointC PointC PointC PointC Point C Point C Point C Point C PointC PointC PointC PointC PointC PointC Point C PointC Point C Point C PointC PointC PointC PointC PointC Point C Point C PointC PointC PointC PointC PointC Point C Point C Point C Point C Point C PointC PointC PointC PointC Point C Point C Point C PointC PointC PointC Point C BarrEngineering 9/10/2011ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Fumace Stack A

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/20119:43:40 19.4 1.2 6.3 Run 1 PointC 7/19/20119:44:00 19.5 1.2 6.5 Run 1 PointC 7/19/20119:44:20 7/19/20119:44:40 7/19/20119:45:00" 7/19/20119:45:20 7/19/20119:45 7/19/20119:46 7/19/20119:46: 7/19/20119:46 7/19/20119:47:00 7/19/20119:47:20 19.4 1.2 6.3 Run 1 PointA 7/19/20119:47:40 19.4 1.2 6.3 Run 1 PointA 7/19/20119:48:00 19.4 1.2 6.5 Run 1 PointA 7/19/20119:48:20 19.4 1.2 6.6 Run 1 PointA 7/19/20119:48:40 19.4 1.2 6.8 Run 1 PointA 7/19/20119:49:00 19.5 1.2 6.9 Run 1 PointA 7/19/20119:49:20 19.5 1.2 7.0 Run 1 PointA 7/19/20119:49:40 19.4 1.2 7.1 Run 1 PointA 7/19/20119:50:00 19.5 1.2 7.2 Run 1 PointA 7/19/20119:50:20 19.5 1.2 7.4 Run 1 PointA 7/19/20119:50:40 19.5 1.2 7.4 Run 1 PointA 7/19/20119:51:00 19.5 1.2 7.5 Run 1 PointA 7/19/20119:51:20 19.5 1.2 7.7 Run 1 PointA 7/19/20119:51:40 19.5 1.2 7.8 Run 1 PointA 7/19/20119:52:00 19.5 1.2 7.8 Run 1 PointA 7/19/20119:52:20 19.5 1.2 8.0 Run 1 PointA 7/19/20119:52:40 19.5 1.1 8.0 Run 1 PointA 7/19/20119:53:00 19.5 1.1 8.0 Run 1 PointA 7/19/20119:53:20 19.5 1.1 8.0 Run 1 PointA 7/19/20119:53:40 19.5 1.1 8.0 Run 1 PointA 7/19/20119:54:00 19.5 1.1 8.1 Run 1 PointA 7/19/20119:54:20 19.5 1.1 8.2 Run 1 PointA 7/19/20119:54:40 19.5 1.1 8.1 Run 1 PointA 7/19/20119:55:00 19.5 1.1 8.1 Run 1 PointA 7/19/20119:55:20 19.5 1.1 7.9 Run 1 PointA 7/19/20119:55:40 19.5 1.1 7.7 Run 1 PointA 7/19/20119:56:00 19.5 1.2 7.6 Run 1 PointA 7/19/20119:56:20 19.5 1.2 7.6 Run 1 PointA 7/19/20119:56:40 19.5 1.2 7.4 Run 1 PointA 7/19/20119:57:00 19.5 1.2 7.3 Run 1 PointA 7/19/20119:57:20 19.5 1.2 7.3 Run 1 PointA 7/19/20119:57:40 19.5 1.2 7.2 Run 1 PointA 7/19/20119:58:00 19.5 1.2 7.3 Run 1 PointA 7/19/20119:58:20 19.5 1.2 7.3 Run 1 PointA 7/19/20119:58:40 19.5 1.2 7.5 Run 1 PointA 7/19/20119:59:00 19.5 1.2 7.6 Run 1 PointA 7/19/20119:59:20 19.5 1.2 7.8 Run 1 PointA 7/19/20119:59:40 19.5 1.2 8.0 Run 1 PointA 7/19/201110:00:00 19.5 1.2 8.0 7/19/201110:00:20 19.5 1.2 8.0 Bias DriftCheck 7/19/201110:00:40 19.5 1.2 8.0 Bias Drift Check 7/19/201110:01:00 19.5 1.2 8.1 Bias Drift Check 7/19/201110:01:20 19.5 1.2 8.0 Bias Drift Check 7/19/201110:01:40 19.4 1.2 8.1 Bias DriftCheck 7/19/201110:02:00 19.4 1.2 8.1 Bias DriftCheck 7/19/201110:02:20 19.5 1.2 8.0 Bias DriftCheck 7/19/201110:02:40 19.5 1.2 7.8 Bias DriftCheck 7/19/201110:03:00 19.5 1.2 7.7 Bias DriftCheck 7/19/201110:03:20 19.4 1.2 7.7 Bias Drift Check 7/19/201110:03:40 19.5 1.2 7.7 Bias DriftCheck 7/19/201110:04:00 8.7 0.6 7.5 Bias Drift Check 7/19/201110:04:20 0.1 0.1 5.8 Bias DriftCheck

Page 6of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Fumace Stack A

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/20119:43:40 19.4 1.2 6.3 Run 1 PointC 7/19/20119:44:00 19.5 1.2 6.5 Run 1 PointC 7/19/20119:44:20 7/19/20119:44:40 7/19/20119:45:00" 7/19/20119:45:20 7/19/20119:45:40 7/19/20119:46:00

. 7/19/20119:46:20:

..... 7/19/20119:46:40' 7/19/20119:47:00·';; 7/19/20119:47:20 19.4 1.2 6.3 Run 1 PointA 7/19/20119:47:40 19.4 1.2 6.3 Run 1 PointA 7/19/20119:48:00 19.4 1.2 6.5 Run 1 PointA 7/19/20119:48:20 19.4 1.2 6.6 Run 1 PointA 7/19/20119:48:40 19.4 1.2 6.8 Run 1 PointA 7/19/20119:49:00 19.5 1.2 6.9 Run 1 PointA 7/19/20119:49:20 19.5 1.2 7.0 Run 1 PointA 7/19/20119:49:40 19.4 1.2 7.1 Run 1 PointA 7/19/20119:50:00 19.5 1.2 7.2 Run 1 PointA 7/19/20119:50:20 19.5 1.2 7.4 Run 1 PointA 7/19/20119:50:40 19.5 1.2 7.4 Run 1 PointA 7/19/20119:51:00 19.5 1.2 7.5 Run 1 PointA 7/19/20119:51:20 19.5 1.2 7.7 Run 1 PointA 7/19/20119:51:40 19.5 1.2 7.8 Run 1 PointA 7/19/20119:52:00 19.5 1.2 7.8 Run 1 PointA 7/19/20119:52:20 19.5 1.2 8.0 Run 1 PointA 7/19/20119:52:40 19.5 1.1 8.0 Run 1 PointA 7/19/20119:53:00 19.5 1.1 8.0 Run 1 PointA 7/19/20119:53:20 19.5 1.1 8.0 Run 1 PointA 7/19/20119:53:40 19.5 1.1 8.0 Run 1 PointA 7/19/20119:54:00 19.5 1.1 8.1 Run 1 PointA 7/19/20119:54:20 19.5 1.1 8.2 Run 1 PointA 7/19/20119:54:40 19.5 1.1 8.1 Run 1 PointA 7/19/20119:55:00 19.5 1.1 8.1 Run 1 PointA 7/19/20119:55:20 19.5 1.1 7.9 Run 1 PointA 7/19/20119:55:40 19.5 1.1 7.7 Run 1 PointA 7/19/20119:56:00 19.5 1.2 7.6 Run 1 PointA 7/19/20119:56:20 19.5 1.2 7.6 Run 1 PointA 7/19/20119:56:40 19.5 1.2 7.4 Run 1 PointA 7/19/20119:57:00 19.5 1.2 7.3 Run 1 PointA 7/19/20119:57:20 19.5 1.2 7.3 Run 1 PointA 7/19/20119:57:40 19.5 1.2 7.2 Run 1 PointA 7/19/20119:58:00 19.5 1.2 7.3 Run 1 PointA 7/19/20119:58:20 19.5 1.2 7.3 Run 1 PointA 7/19/20119:58:40 19.5 1.2 7.5 Run 1 PointA 7/19/20119:59:00 19.5 1.2 7.6 Run 1 PointA 7/19/20119:59:20 19.5 1.2 7.8 Run 1 PointA 7/19/20119:59:40 19.5 1.2 8.0 Run 1 PointA 7/19/201110:00:00 19.5 1.2 8.0 7/19/201110:00:20 19.5 1.2 8.0 Bias DriftCheck 7/19/201110:00:40 19.5 1.2 8.0 Bias Drift Check 7/19/201110:01:00 19.5 1.2 8.1 Bias Drift Check 7/19/201110:01:20 19.5 1.2 8.0 Bias Drift Check 7/19/201110:01:40 19.4 1.2 8.1 Bias DriftCheck 7/19/201110:02:00 19.4 1.2 8.1 Bias DriftCheck 7/19/201110:02:20 19.5 1.2 8.0 Bias DriftCheck 7/19/201110:02:40 19.5 1.2 7.8 Bias DriftCheck 7/19/201110:03:00 19.5 1.2 7.7 Bias DriftCheck 7/19/201110:03:20 19.4 1.2 7.7 Bias Drift Check 7/19/201110:03:40 19.5 1.2 7.7 Bias DriftCheck 7/19/201110:04:00 8.7 0.6 7.5 Bias Drift Check 7/19/201110:04:20 0.1 0.1 5.8 Bias DriftCheck

Page 6of 17ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace StackA

TIMESTAMP O2

### .% CO2

### ,% S02, ppm Notes 7/19/201110:04:40 0.0 0.1 2.8 BiasDrift Check 7/19/201110:05:00 0.0 0.1 0.8 BiasDrift Check 7/19/201110:05:20 0.0 0.1 0.4 BiasDrift Check 7/19/201110:05:40 0.0 0.1 0.4 BiasDrift Check 7/19/201110:06:00 0.0 0.1 0.4 BiasDrift Check 7/19/201110:06:20 0.0 0.1 0.4 Bias DriftCheck 7/19/201110:06:40 0.0 0.1 0.4 N2 Zero BiasDriftCheck 7/19/201110:07:00 0.0 0.0 0.5 Bias DriftCheck 7/19/201110:07:20 0.0 0.0 0.4 Bias Drift Check 7/19/201110:07:40 4.5 2.4 0.3 Bias DriftCheck 7/19/201110:08:00 8.7 8.8 0.2 Bias DriftCheck 7/19/201110:08:20 8.8 8.9 -0.3 Bias Drift Check 7/19/201110:08:40 8.8 8.9 -0.7 BiasDriftCheck 7/19/201110:09:00 8.8 8.9 -0.8 Bias Drift Check 7/19/201110:09:20 8.8 9.0 -0.9 BiasDrift Check 7/19/201110:09:40 8.8 9.0 -0.8 BiasDriftCheck 7/19/201110:10:00 8.9 9.0 -0.8 BiasDriftCheck 7/19/201110:10:20 B.9 9.0 -0.9 029.0/C02 9.0 BiasDriftCheck 7/19/201110:10:40 8.1 8.1 -0.9 BiasDriftCheck 7/19/201110:11:00 0.3 0.4 0.6 BiasDriftCheck 7/19/201110:11:20 0.0 0.2 15.7 BiasDriftCheck 7/19/201110:11:40 0.0 0.2 22.6 BiasDriftCheck 7/19/201110:12:00 0.0 0.2 25.1 BiasDriftCheck 7/19/201110:12:20 0.0 0.1 26.0 Bias DriftCheck 7/19/201110:12:40 0.0 0.1 26.1 Bias DriftCheck 7/19/201110:13:00 0.0 0.1 26.3 S0227.0 ppm Bias Drift Check 7/19/201110:13:20 0.0 0.1 26.5 BiasDrift Check 7/19/201110:13:40 0.1 0.1 26.5 BiasDriftCheck 7/19/201110:14:00 0.2 0.1 25.8 BiasDriftCheck 7/19/201110:14:20 0.0 0.1 14.2 BiasDriftCheck 7/19/201110:14:40 0.0 0.1 8.1 BiasDriftCheck 7/19/201110:15:00 0.0 0.1 4.0 Bias DriftCheck 7/19/201110:15:20 0.0 0.1 3.4 Bias DriftCheck 7/19/201110:15:40 0.0 0.1 3.2 Bias DriftCheck 7/19/201110:16:00 0.0 0.1 3.1 Bias DriftCheck 7/19/201110:16:20 0.0 0.1 3.1 Bias DriftCheck 7/19/201110:16:40 0.0 0.1 3.2 Bias Drift Check 7/19/201110:17:00 16.3 1.1 8.4 In Stack 7/19/201110:17:20 19.5 1.3 9.3 In Stack 7/19/201110:17:40 19.5 1.3 7.5 In Stack 7/19/201110:18:00 19.6 1.3 7.0 In Stack 7/19/201110:18:20 19.6 1.3 6.7 In Stack 7/19/201110:18:40 19.6 1.3 6.5 In Stack 7/19/201110:19:00 19.5 1.3 6.4 In Stack 7/19/201110:19:20 19.5 1.3 6.6 In Stack 7/19/201110:19:40 19.5 1.3 6.5 In Stack 7/19/201110:20:00 19.5 1.3 6.4 In Stack 7/19/201110:20:20 19.5 1.3 6.5 In Stack 7/19/201110:20:40 19.5 1.3 6.6 In Stack 7/19/201110:21:00 19.5 1.3 6.6 In Stack 7/19/201110:21:20 19.5 1.3 6.5 In Stack 7/19/201110:21:40 19.5 1.3 6.4 In Stack 7/19/201110:22:00 19.4 1.3 6.3 In Stack 7/19/201110:22:20 19.4 1.3 6.3 In Stack 7/19/201110:22:40 19.5 1.3 6.3 In Stack 7/19/201110:23:00 19.4 1.3 6.4 In Stack 7/19/201110:23:20 19.4 1.3 6.5 In Stack 7/19/201110:23:40 19.4 1.3 6.4 In Stack 7/19/201110:24:00 19.4 1.3 6.3 In Stack 7/19/201110:24:20 19.4 1.3 6.2 In Stack 7/19/201110:24:40 19.4 1.3 6.2 In Stack 7/19/201110:25:00 19.5 1.3 6.2 In Stack 7/19/201110:25:20 19.5 1.3 6.3 In Stack

Page7of 17 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace StackA

TIMESTAMP O2

### .% CO2

### ,% S02, ppm Notes 7/19/201110:04:40 0.0 0.1 2.8 BiasDrift Check 7/19/201110:05:00 0.0 0.1 0.8 BiasDrift Check 7/19/201110:05:20 0.0 0.1 0.4 BiasDrift Check 7/19/201110:05:40 0.0 0.1 0.4 BiasDrift Check 7/19/201110:06:00 0.0 0.1 0.4 BiasDrift Check 7/19/201110:06:20 0.0 0.1 0.4 Bias DriftCheck 7/19/201110:06:40 0.0 0.1 0.4 N2 Zero BiasDriftCheck 7/19/201110:07:00 0.0 0.0 0.5 Bias DriftCheck 7/19/201110:07:20 0.0 0.0 0.4 Bias Drift Check 7/19/201110:07:40 4.5 2.4 0.3 Bias DriftCheck 7/19/201110:08:00 8.7 8.8 0.2 Bias DriftCheck 7/19/201110:08:20 8.8 8.9 -0.3 Bias Drift Check 7/19/201110:08:40 8.8 8.9 -0.7 BiasDriftCheck 7/19/201110:09:00 8.8 8.9 -0.8 Bias Drift Check 7/19/201110:09:20 8.8 9.0 -0.9 BiasDrift Check 7/19/201110:09:40 8.8 9.0 -0.8 BiasDriftCheck 7/19/201110:10:00 8.9 9.0 -0.8 BiasDriftCheck 7/19/201110:10:20 B.9 9.0 -0.9 029.0/C02 9.0 BiasDriftCheck 7/19/201110:10:40 8.1 8.1 -0.9 BiasDriftCheck 7/19/201110:11:00 0.3 0.4 0.6 BiasDriftCheck 7/19/201110:11:20 0.0 0.2 15.7 BiasDriftCheck 7/19/201110:11:40 0.0 0.2 22.6 BiasDriftCheck 7/19/201110:12:00 0.0 0.2 25.1 BiasDriftCheck 7/19/201110:12:20 0.0 0.1 26.0 Bias DriftCheck 7/19/201110:12:40 0.0 0.1 26.1 Bias DriftCheck 7/19/201110:13:00 0.0 0.1 26.3 S0227.0 ppm Bias Drift Check 7/19/201110:13:20 0.0 0.1 26.5 BiasDrift Check 7/19/201110:13:40 0.1 0.1 26.5 BiasDriftCheck 7/19/201110:14:00 0.2 0.1 25.8 BiasDriftCheck 7/19/201110:14:20 0.0 0.1 14.2 BiasDriftCheck 7/19/201110:14:40 0.0 0.1 8.1 BiasDriftCheck 7/19/201110:15:00 0.0 0.1 4.0 Bias DriftCheck 7/19/201110:15:20 0.0 0.1 3.4 Bias DriftCheck 7/19/201110:15:40 0.0 0.1 3.2 Bias DriftCheck 7/19/201110:16:00 0.0 0.1 3.1 Bias DriftCheck 7/19/201110:16:20 0.0 0.1 3.1 Bias DriftCheck 7/19/201110:16:40 0.0 0.1 3.2 Bias Drift Check 7/19/201110:17:00 16.3 1.1 8.4 In Stack 7/19/201110:17:20 19.5 1.3 9.3 In Stack 7/19/201110:17:40 19.5 1.3 7.5 In Stack 7/19/201110:18:00 19.6 1.3 7.0 In Stack 7/19/201110:18:20 19.6 1.3 6.7 In Stack 7/19/201110:18:40 19.6 1.3 6.5 In Stack 7/19/201110:19:00 19.5 1.3 6.4 In Stack 7/19/201110:19:20 19.5 1.3 6.6 In Stack 7/19/201110:19:40 19.5 1.3 6.5 In Stack 7/19/201110:20:00 19.5 1.3 6.4 In Stack 7/19/201110:20:20 19.5 1.3 6.5 In Stack 7/19/201110:20:40 19.5 1.3 6.6 In Stack 7/19/201110:21:00 19.5 1.3 6.6 In Stack 7/19/201110:21:20 19.5 1.3 6.5 In Stack 7/19/201110:21:40 19.5 1.3 6.4 In Stack 7/19/201110:22:00 19.4 1.3 6.3 In Stack 7/19/201110:22:20 19.4 1.3 6.3 In Stack 7/19/201110:22:40 19.5 1.3 6.3 In Stack 7/19/201110:23:00 19.4 1.3 6.4 In Stack 7/19/201110:23:20 19.4 1.3 6.5 In Stack 7/19/201110:23:40 19.4 1.3 6.4 In Stack 7/19/201110:24:00 19.4 1.3 6.3 In Stack 7/19/201110:24:20 19.4 1.3 6.2 In Stack 7/19/201110:24:40 19.4 1.3 6.2 In Stack 7/19/201110:25:00 19.5 1.3 6.2 In Stack 7/19/201110:25:20 19.5 1.3 6.3 In Stack

Page7of 17ArcelorMiltal Data Logger Output Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace Stack A

TIMESTAMP 

# ° 2,% CO2 •

### % S02, ppm Notes 7/19/201110:25:40 19.5 1.3 6.4 In Stack 7/19/201110:26:00 19.5 1.3 b.6 In Stack 7/19/201110:26:20 19.5 1.3 6.7 In Stack 7/19/201110:26:40 19.5 1.3 6.8 In Stack 7/19/201110:27:00 19.5 1.3 6.9 In Stack 7/19/201110:27:20 19.5 1.3 7.0 In Stack 7/19/201110:27:40 19.5 1.3 7.0 In Stack 7/19/201110:28:00 19.5 1.3 6.8 In Stack 7/19/201110:28:20 19.5 1.3 6.8 In Stack 7/19/201110:28:40 19.5 1.3 6.7 In Stack 7/19/201110:29:00 19.5 1.2 6.7 In Stack 7/19/201110:29:20 19.5 1.3 6.8 In Stack 7/19/201110:29:40 19.5 1.3 6.8 In Stack 7/19/201110:30:00 19.5 1.2 6.8 In Stack 7/19/201110:30:20 19.5 1.3 6.8 In Stack 7/19/201110:30:40 19.5 1.3 6.8 In Stack 7/19/201110:31:00 19.5 1.3 6.6 In Stack 7/19/201110:31:20 19.5 1.3 6.5 In Stack 7/19/201110:31:40 19.5 1.3 6.5 In Stack 7/19/201110:32:00 19.5 1.3 6.3 In Stack 7/19/201110:32:20 19.5 1.3 6.3 In Stack 7/19/201110:32:40 19.5 1.3 6.3 In Stack 7/19/201110:33:00 19.5 1.3 6.1 In Stack 7/19/201110:33:20 19.5 1.3 6.0 In Stack 7/19/201110:33:40 19.5 1.3 5.9 In Stack 7/19/201110:34:00 19.5 1.3 5.9 In Stack 7/19/201110:34:20 19.5 1.3 5.9 In Stack 7/19/201110:34:40 19.5 1.3 6.1 In Stack 7/19/201110:35:00 19.5 1.3 6.2 In Stack 7/19/201110:35:20 19.5 1.3 6.1 In Stack 7/19/201110:35:40 19.5 1.3 6.2 In Stack 7/19/201110:36:00 19.5 1.3 6.2 In Stack 7/19/201110:36:20 19.5 1.3 6.1 In Stack 7/19/201110:36:40 19.5 1.3 6.0 In Stack 7/19/201110:37:00 19.5 1.3 6.0 In Stack 7/19/201110:37:20 19.5 1.3 5.9 In Stack 7/19/201110:37:40 19.5 1.3 5.7 In Stack 7/19/201110:38:00 19.5 1.3 5.7 In Stack 7/19/201110:38:20 19.5 1.3 5.7 In Stack 7/19/201110:38:40 19.5 1.3 5.7 In Stack 7/19/201110:39:00 19.5 1.3 5.7 In Stack 7/19/201110:39:20 19.5 1.3 5.7 In Stack 7/19/201110:39:40 19.5 1.3 5.7 In Stack 7/19/201110:40:00 19.4 1.3 5.5 In Stack 7/19/201110:40:20 19.4 1.3 5.4 In Stack 7/19/201110:40:40 19.4 1.3 5.3 In Stack 7/19/201110:41:00 19.5 1.3 5.3 In Stack 7/19/201110:41:20 19.5 1.3 5.3 In Stack 7/19/201110:41:40 19.5 1.3 5.4 In Stack 7/19/201110:42:00 19.5 1.3 5.4 In Stack 7/19/201110:42:20 19.5 1.3 5.4 In Stack 7/19/201110:42:40 19.5 1.3 5.4 In Stack 7/19/201110:43:00 19.5 1.3 5.4 In Stack 7/19/201110:43:20 19.5 1.3 5.4 In Stack 7/19/201110:43:40 19.5 1.3 5.5 In Stack 7/19/201110:44:00 19.5 1.3 5.5 In Stack 7/19/201110:44:20 19.5 1.3 5.4 In Stack 7/19/201110:44:40 19.5 1.3 5.2 In Stack 7/19/201110:45:00 19.5 1.2 5.2 Run 

### 2 7/19/201110:45:20 19.5 1.3 5.1 Run 

### 2 7/19/201110:45:40 19.5 1.3 5.2 Run 

### 2 7/19/201110:46:00 19.5 1.3 5.2 Run 

### 2 7/19/201110:46:20 19.5 1.3 5.2 Run 

### 2

Page 8of 17 ArcelorMiltal Data Logger Output Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace Stack A

TIMESTAMP 

# ° 2,% CO2 •

### % S02, ppm Notes 7/19/201110:25:40 19.5 1.3 6.4 In Stack 7/19/201110:26:00 19.5 1.3 b.6 In Stack 7/19/201110:26:20 19.5 1.3 6.7 In Stack 7/19/201110:26:40 19.5 1.3 6.8 In Stack 7/19/201110:27:00 19.5 1.3 6.9 In Stack 7/19/201110:27:20 19.5 1.3 7.0 In Stack 7/19/201110:27:40 19.5 1.3 7.0 In Stack 7/19/201110:28:00 19.5 1.3 6.8 In Stack 7/19/201110:28:20 19.5 1.3 6.8 In Stack 7/19/201110:28:40 19.5 1.3 6.7 In Stack 7/19/201110:29:00 19.5 1.2 6.7 In Stack 7/19/201110:29:20 19.5 1.3 6.8 In Stack 7/19/201110:29:40 19.5 1.3 6.8 In Stack 7/19/201110:30:00 19.5 1.2 6.8 In Stack 7/19/201110:30:20 19.5 1.3 6.8 In Stack 7/19/201110:30:40 19.5 1.3 6.8 In Stack 7/19/201110:31:00 19.5 1.3 6.6 In Stack 7/19/201110:31:20 19.5 1.3 6.5 In Stack 7/19/201110:31:40 19.5 1.3 6.5 In Stack 7/19/201110:32:00 19.5 1.3 6.3 In Stack 7/19/201110:32:20 19.5 1.3 6.3 In Stack 7/19/201110:32:40 19.5 1.3 6.3 In Stack 7/19/201110:33:00 19.5 1.3 6.1 In Stack 7/19/201110:33:20 19.5 1.3 6.0 In Stack 7/19/201110:33:40 19.5 1.3 5.9 In Stack 7/19/201110:34:00 19.5 1.3 5.9 In Stack 7/19/201110:34:20 19.5 1.3 5.9 In Stack 7/19/201110:34:40 19.5 1.3 6.1 In Stack 7/19/201110:35:00 19.5 1.3 6.2 In Stack 7/19/201110:35:20 19.5 1.3 6.1 In Stack 7/19/201110:35:40 19.5 1.3 6.2 In Stack 7/19/201110:36:00 19.5 1.3 6.2 In Stack 7/19/201110:36:20 19.5 1.3 6.1 In Stack 7/19/201110:36:40 19.5 1.3 6.0 In Stack 7/19/201110:37:00 19.5 1.3 6.0 In Stack 7/19/201110:37:20 19.5 1.3 5.9 In Stack 7/19/201110:37:40 19.5 1.3 5.7 In Stack 7/19/201110:38:00 19.5 1.3 5.7 In Stack 7/19/201110:38:20 19.5 1.3 5.7 In Stack 7/19/201110:38:40 19.5 1.3 5.7 In Stack 7/19/201110:39:00 19.5 1.3 5.7 In Stack 7/19/201110:39:20 19.5 1.3 5.7 In Stack 7/19/201110:39:40 19.5 1.3 5.7 In Stack 7/19/201110:40:00 19.4 1.3 5.5 In Stack 7/19/201110:40:20 19.4 1.3 5.4 In Stack 7/19/201110:40:40 19.4 1.3 5.3 In Stack 7/19/201110:41:00 19.5 1.3 5.3 In Stack 7/19/201110:41:20 19.5 1.3 5.3 In Stack 7/19/201110:41:40 19.5 1.3 5.4 In Stack 7/19/201110:42:00 19.5 1.3 5.4 In Stack 7/19/201110:42:20 19.5 1.3 5.4 In Stack 7/19/201110:42:40 19.5 1.3 5.4 In Stack 7/19/201110:43:00 19.5 1.3 5.4 In Stack 7/19/201110:43:20 19.5 1.3 5.4 In Stack 7/19/201110:43:40 19.5 1.3 5.5 In Stack 7/19/201110:44:00 19.5 1.3 5.5 In Stack 7/19/201110:44:20 19.5 1.3 5.4 In Stack 7/19/201110:44:40 19.5 1.3 5.2 In Stack 7/19/201110:45:00 19.5 1.2 5.2 Run 

### 2 7/19/201110:45:20 19.5 1.3 5.1 Run 

### 2 7/19/201110:45:40 19.5 1.3 5.2 Run 

### 2 7/19/201110:46:00 19.5 1.3 5.2 Run 

### 2 7/19/201110:46:20 19.5 1.3 5.2 Run 

### 2

Page 8of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine TestDate 7/19/11 9/10/2011 Virginia. Minnesota Furnace StackA

TIMESTAMP O2 

### .% CO2 •

### % S02. ppm Notes 7/19/201110:46:40 19.5 1.3 5.2 Run 2 7/19/201110:47:00 19.5 1.3 5.2 Run 2 7/19/201110:47:20 19.5 1.3 5.1 Run 2 7/19/201110:47:40 19.5 1.3 5.1 Run2 7/19/201110:48:00 19.5 1.3 5.1 Run 2 7/19/201110:48:20 19.5 1.3 5.1 Run2 7/19/201110:48:40 19.4 1.3 5.3 Run 2 7/19/201110:49:00 19.4 1.3 5.5 Run2 7/19/201110:49:20 19.5 1.3 5.6 Run 2 7/19/201110:49:40 19.5 1.3 5.6 Run 2 7/19/201110:50:00 19.5 1.3 5.6 Run 2 7/19/201110:50:20 19.4 1.3 5.8 Run 2 7/19/201110:50:40 19.4 1.3 6.0 Run 2 7/19/201110:51:00 19.4 1.3 6.2 Run 2 7/19/201110:51:20 19.5 1.2 6.3 Run 2 7/19/201110:51:40 19.5 1.2 6.4 Run 2 7/19/201110:52:00 19.5 1.2 6.6 Run 2 7/19/201110:52:20 19.5 1.2 6.9 Run 2 7/19/201110:52:40 19.5 1.2 7.1 Run 2 7/19/201110:53:00 19.5 1.2 7.3 Run 2 7/19/201110:53:20 19.5 1.2 7.3 Run 2 7/19/201110:53:40 19.5 1.2 7.3 Run 2 7/19/201110:54:00 19.5 1.2 7.2 Run2 7/19/201110:54:20 19.5 1.2 7.1 Run2 7/19/201110:54:40 19.5 1.2 6.9 Run 2 7/19/201110:55:00 19.5 1.2 6.9 Run2 7/19/201110:55:20 19.5 1.2 6.8 Run2 7/19/201110:55:40 19.5 1.2 6.6 Run 2 7/19/201110:56:00 19.5 1.2 6.5 Run 2 7/19/201110:56:20 19.5 1.2 6.4 Run 2 7/19/201110:56:40 19.5 1.2 6.4 Run 2 7/19/201110:57:00 19.5 1.2 6.2 Run 2 7/19/201110:57:20 19.5 1.2 6.0 Run 2 7/19/201110:57:40 19.5 1.2 6.1 Run 2 7/19/201110:58:00 19.5 1.2 6.2 Run 2 7/19/201110:58:20 19.5 1.2 6.3 Run 2 7/19/201110:58:40 19.5 1.2 6.4 Run 2 7/19/201110:59:00 19.5 1.2 6.5 Run 2 7/19/201110:59:20 19.5 1.2 6.5 Run 2 7/19/201110:59:40 19.5 1.2 6.5 Run 2 7/19/201111:00:00 19.5 1.2 6.5 Run 2 7/19/201111:00:20 19.5 1.2 6.6 Run 2 7/19/201111:00:40 19.5 1.2 6.6 Run 2 7/19/201111:01:00 19.5 1.2 6.8 Run 2 7/19/201111:01:20 19.5 1.2 7.0 Run 2 7/19/201111:01:40 19.5 1.2 7.0 Run 2 7/19/201111:02:00,:, 

## <§:iL 7/19/201111:02:20 c 

### '/'ltj:

.
,-

## ;i;l 7/19/201111:02:40 7/19/201111:03:00 

### .oil 7/19/201111:03:20 

### 1.2 1;5 7/19/201111:03:40 

## 1.2 4;6 7/19/201111:04:00**1~2** 

## 6.1 7/19/201111:04:20 

### 1.2

## ~;~I 7/19/201111:04:40' 

# al' 1.2

,

## ~~~- 7/19/201111:05:00-**~";~i;II:";;;;'~"** ,.- 6;4 ,1'<' I ' 7/19/201111:05:20 19.5 1.2 6.3 Run 2 7/19/201111:05:40 19.5 1.2 6.3 Run 2 7/19/201111:06:00 19.5 1.2 6.3 Run 2 7/19/201111:06:20 19.5 1.2 6.3 Run 2 7/19/201111:06:40 19.5 1.2 6.3 Run 2 7/19/201111:07:00 19.5 1.2 6.3 Run 2 7/19/201111:07:20 19.5 1.3 6.3 Run 2

Page9of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine TestDate 7/19/11 9/10/2011 Virginia. Minnesota Furnace StackA

TIMESTAMP O2 

### .% CO2 •

### % S02. ppm Notes 7/19/201110:46:40 19.5 1.3 5.2 Run 2 7/19/201110:47:00 19.5 1.3 5.2 Run 2 7/19/201110:47:20 19.5 1.3 5.1 Run 2 7/19/201110:47:40 19.5 1.3 5.1 Run2 7/19/201110:48:00 19.5 1.3 5.1 Run 2 7/19/201110:48:20 19.5 1.3 5.1 Run2 7/19/201110:48:40 19.4 1.3 5.3 Run 2 7/19/201110:49:00 19.4 1.3 5.5 Run2 7/19/201110:49:20 19.5 1.3 5.6 Run 2 7/19/201110:49:40 19.5 1.3 5.6 Run 2 7/19/201110:50:00 19.5 1.3 5.6 Run 2 7/19/201110:50:20 19.4 1.3 5.8 Run 2 7/19/201110:50:40 19.4 1.3 6.0 Run 2 7/19/201110:51:00 19.4 1.3 6.2 Run 2 7/19/201110:51:20 19.5 1.2 6.3 Run 2 7/19/201110:51:40 19.5 1.2 6.4 Run 2 7/19/201110:52:00 19.5 1.2 6.6 Run 2 7/19/201110:52:20 19.5 1.2 6.9 Run 2 7/19/201110:52:40 19.5 1.2 7.1 Run 2 7/19/201110:53:00 19.5 1.2 7.3 Run 2 7/19/201110:53:20 19.5 1.2 7.3 Run 2 7/19/201110:53:40 19.5 1.2 7.3 Run 2 7/19/201110:54:00 19.5 1.2 7.2 Run2 7/19/201110:54:20 19.5 1.2 7.1 Run2 7/19/201110:54:40 19.5 1.2 6.9 Run 2 7/19/201110:55:00 19.5 1.2 6.9 Run2 7/19/201110:55:20 19.5 1.2 6.8 Run2 7/19/201110:55:40 19.5 1.2 6.6 Run 2 7/19/201110:56:00 19.5 1.2 6.5 Run 2 7/19/201110:56:20 19.5 1.2 6.4 Run 2 7/19/201110:56:40 19.5 1.2 6.4 Run 2 7/19/201110:57:00 19.5 1.2 6.2 Run 2 7/19/201110:57:20 19.5 1.2 6.0 Run 2 7/19/201110:57:40 19.5 1.2 6.1 Run 2 7/19/201110:58:00 19.5 1.2 6.2 Run 2 7/19/201110:58:20 19.5 1.2 6.3 Run 2 7/19/201110:58:40 19.5 1.2 6.4 Run 2 7/19/201110:59:00 19.5 1.2 6.5 Run 2 7/19/201110:59:20 19.5 1.2 6.5 Run 2 7/19/201110:59:40 19.5 1.2 6.5 Run 2 7/19/201111:00:00 19.5 1.2 6.5 Run 2 7/19/201111:00:20 19.5 1.2 6.6 Run 2 7/19/201111:00:40 19.5 1.2 6.6 Run 2 7/19/201111:01:00 19.5 1.2 6.8 Run 2 7/19/201111:01:20 19.5 1.2 7.0 Run 2 7/19/201111:01:40 19.5 1.2 7.0 Run 2 7/19/201111:02:00,:, 

## <§:iL 7/19/201111:02:20 c 

### '/'ltj:

.
,-

## ;i;l 7/19/201111:02:40 7/19/201111:03:00 

### .oil 7/19/201111:03:20 

### 1.2 1;5 7/19/201111:03:40 

## 1.2 4;6 7/19/201111:04:00**1~2** 

## 6.1 7/19/201111:04:20 

### 1.2

## ~;~I 7/19/201111:04:40'

,

## ~~~- 7/19/201111:05:00- ,.- 6;4 7/19/201111:05:20 19.5 1.2 6.3 Run 2 7/19/201111:05:40 19.5 1.2 6.3 Run 2 7/19/201111:06:00 19.5 1.2 6.3 Run 2 7/19/201111:06:20 19.5 1.2 6.3 Run 2 7/19/201111:06:40 19.5 1.2 6.3 Run 2 7/19/201111:07:00 19.5 1.2 6.3 Run 2 7/19/201111:07:20 19.5 1.3 6.3 Run 2

Page9of 17ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate 7/19/11 9/10/2011 Virginia. Minnesota FurnaceStackA



### TIMESTAMP 

### °2.% CO

### 2 , % 5°2 , ppm Notes 7/19/201111:07:40 19.5 1.2 6.2 Run 2 7/19/201111:08:00 19.5 1.3 6.1 Run 2 7/19/201111:08:20 19.5 1.3 6.1 Run 2 7/19/201111:08:40 19.5 1.3 6.2 Run 2 7/19/201111:09:00 19.5 1.3 6.2 Run 2 7/19/201111:09:20 19.4 1.3 6.3 Run 2 7/19/201111:09:40 19.4 1.3 6.5 Run2 7/19/201111:10:00 19.5 1.3 6.6 Run 2 7/19/201111:10:20 19.5 1.3 6.5 Run 2 7/19/201111:10:40 19.5 1.3 6.6 Run 2 7/19/201111:11:00 19.4 1.3 6.7 Run 2 7/19/201111:11:20 19.4 1.3 6.7 Run 2 7/19/201111:11:40 19.4 1.3 6.7 Run 2 7/19/201111:12:00 19.4 1.3 6.6 Run 2 7/19/201111:12:20 19.4 1.3 6.7 Run2 7/19/201111:12:40 19.5 1.3 6.8 Run2 7/19/201111:13:00 19.5 1.3 6.9 Run 2 7/19/201111:13:20 19.5 1.3 6.9 Run 2 7/19/201111:13:40 19.4 1.3 6.5 Run 2 7/19/201111:14:00 19.4 1.3 6.1 Run 2 7/19/201111:14:20 19.4 1.3 5.9 Run 2 7/19/201111:14:40 19.4 1.3 5.9 Run 2 7/19/201111:15:00 19.4 1.3 5.8 Run 2 7/19/201111:15:20 19.4 1.3 5.8 Run 2 7/19/201111:15:40 19.4 1.3 5.6 Run 2 7/19/201111:16:00 19.4 1.3 5.6 Run 2 7/19/201111:16:20 19.4 1.3 5.8 Run 2 7/19/201111:16:40 19.4 1.3 5.8 Run 2 7/19/201111:17:00 19.4 1.3 5.7 Run 2 7/19/201111:17:20 19.4 1.3 5.8 Run 2 7/19/201111:17:40 19.4 1.3 5.8 Run 2 7/19/201111:18:00 19.4 1.3 5.8 Run 2 7/19/201111:18:20 19.4 1.3 5.8 Run 2 7/19/201111:18:40 19.4 1.3 5.7 Run2 7/19/201111:19:00 19.4 1.3 5.6 Run2 7/19/201111:19:20 19.4 1.3 5.6 Run2 7/19/201111:19:40 19.4 1.3 5.6 Run 2 7/19/201111:20:00 19.4 1.3 5.6 Run 2 7/19/201111:20:20 19.4 1.3 5.4 Run 2 7/19/201111:20:40 19.4 1.3 5.2 Run2 7/19/201111:21:00 19.4 1.3 5.2 Run 2 7/19/201111:21:20 19.4 1.3 5.0 Run 2 7/19/201111:21:40 19.4 1.3 4.9 Run 2 7/19/201111:22:00 19.4 1.3 4.9 Run 2 7/19/201111:22:20 19.4 1.3 4.8 Run 2 7/19/201111:22:40 19.4 1.3 4.7 Run 2 7/19/201111:23:00 19.4 1.3 4.6 Run2 7/19/201111:23:20 19.4 1.3 4.4 Run 2 7/19/201111:23:40 19.4 1.3 4.2 Run 2 7/19/201111:24:00 19.4 1.3 4.1 Run 2 7/19/201111:24:20 19.4 1.3 4.1 Run 2 7/19/201111:24:40 19.4 1.3 4.5 Run 2 7/19/201111:25:00 19.4 1.3 5.1 Run 2 7/19/201111:25:20 19.4 1.3 5.3 Run2 7/19/201111:25:40 19.4 1.3 5.4 Run 2 7/19/201111:26:00 19.4 1.3 5.6 Run 2 7/19/201111:26:20 19.4 1.3 5.8 Run 2 7/19/201111:26:40 19.4 1.3 5.7 Run 2 7/19/201111:27:00 19.4 1.3 5.7 Run 2 7/19/201111:27:20 19.4 1.3 5.8 Run2 7/19/201111:27:40 19.4 1.3 5.7 Run 2 7/19/201111:28:00 19.4 1.3 5.7 Run 2 7/19/201111:28:20 19.4 1.3 5.7 Run 2

Page 10of 17 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate 7/19/11 9/10/2011 Virginia. Minnesota FurnaceStackA



### TIMESTAMP 

### °2.% CO

### 2 , % 5°2 , ppm Notes 7/19/201111:07:40 19.5 1.2 6.2 Run 2 7/19/201111:08:00 19.5 1.3 6.1 Run 2 7/19/201111:08:20 19.5 1.3 6.1 Run 2 7/19/201111:08:40 19.5 1.3 6.2 Run 2 7/19/201111:09:00 19.5 1.3 6.2 Run 2 7/19/201111:09:20 19.4 1.3 6.3 Run 2 7/19/201111:09:40 19.4 1.3 6.5 Run2 7/19/201111:10:00 19.5 1.3 6.6 Run 2 7/19/201111:10:20 19.5 1.3 6.5 Run 2 7/19/201111:10:40 19.5 1.3 6.6 Run 2 7/19/201111:11:00 19.4 1.3 6.7 Run 2 7/19/201111:11:20 19.4 1.3 6.7 Run 2 7/19/201111:11:40 19.4 1.3 6.7 Run 2 7/19/201111:12:00 19.4 1.3 6.6 Run 2 7/19/201111:12:20 19.4 1.3 6.7 Run2 7/19/201111:12:40 19.5 1.3 6.8 Run2 7/19/201111:13:00 19.5 1.3 6.9 Run 2 7/19/201111:13:20 19.5 1.3 6.9 Run 2 7/19/201111:13:40 19.4 1.3 6.5 Run 2 7/19/201111:14:00 19.4 1.3 6.1 Run 2 7/19/201111:14:20 19.4 1.3 5.9 Run 2 7/19/201111:14:40 19.4 1.3 5.9 Run 2 7/19/201111:15:00 19.4 1.3 5.8 Run 2 7/19/201111:15:20 19.4 1.3 5.8 Run 2 7/19/201111:15:40 19.4 1.3 5.6 Run 2 7/19/201111:16:00 19.4 1.3 5.6 Run 2 7/19/201111:16:20 19.4 1.3 5.8 Run 2 7/19/201111:16:40 19.4 1.3 5.8 Run 2 7/19/201111:17:00 19.4 1.3 5.7 Run 2 7/19/201111:17:20 19.4 1.3 5.8 Run 2 7/19/201111:17:40 19.4 1.3 5.8 Run 2 7/19/201111:18:00 19.4 1.3 5.8 Run 2 7/19/201111:18:20 19.4 1.3 5.8 Run 2 7/19/201111:18:40 19.4 1.3 5.7 Run2 7/19/201111:19:00 19.4 1.3 5.6 Run2 7/19/201111:19:20 19.4 1.3 5.6 Run2 7/19/201111:19:40 19.4 1.3 5.6 Run 2 7/19/201111:20:00 19.4 1.3 5.6 Run 2 7/19/201111:20:20 19.4 1.3 5.4 Run 2 7/19/201111:20:40 19.4 1.3 5.2 Run2 7/19/201111:21:00 19.4 1.3 5.2 Run 2 7/19/201111:21:20 19.4 1.3 5.0 Run 2 7/19/201111:21:40 19.4 1.3 4.9 Run 2 7/19/201111:22:00 19.4 1.3 4.9 Run 2 7/19/201111:22:20 19.4 1.3 4.8 Run 2 7/19/201111:22:40 19.4 1.3 4.7 Run 2 7/19/201111:23:00 19.4 1.3 4.6 Run2 7/19/201111:23:20 19.4 1.3 4.4 Run 2 7/19/201111:23:40 19.4 1.3 4.2 Run 2 7/19/201111:24:00 19.4 1.3 4.1 Run 2 7/19/201111:24:20 19.4 1.3 4.1 Run 2 7/19/201111:24:40 19.4 1.3 4.5 Run 2 7/19/201111:25:00 19.4 1.3 5.1 Run 2 7/19/201111:25:20 19.4 1.3 5.3 Run2 7/19/201111:25:40 19.4 1.3 5.4 Run 2 7/19/201111:26:00 19.4 1.3 5.6 Run 2 7/19/201111:26:20 19.4 1.3 5.8 Run 2 7/19/201111:26:40 19.4 1.3 5.7 Run 2 7/19/201111:27:00 19.4 1.3 5.7 Run 2 7/19/201111:27:20 19.4 1.3 5.8 Run2 7/19/201111:27:40 19.4 1.3 5.7 Run 2 7/19/201111:28:00 19.4 1.3 5.7 Run 2 7/19/201111:28:20 19.4 1.3 5.7 Run 2

Page 10of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace StackA

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/201111:28:40 19.4 1.3 5.8 Run 2 7/19/201111:29:00 19.4 1.3 5.9 Run 2 7/19/201111:29:20 19.4 1.3 5.8 Run 2 7/19/201111:29:40 19.4 1.3 5.6 Run 2 7/19/201111:30:00 19.4 1.3 5.4 Run 2 7/19/201111:30:20 19.4 1.3 5.5 Run 2 7/19/201111:30:40 19.4 1.3 5.5 Run 2 7/19/201111:31:00 19.4 1.3 5.6 Run 2 7/19/201111:31:20 19.4 1.3 5.6 Run 2 7/19/201111:31:40 19.4 1.3 5.7 Run 2 7/19/201111:32:00 19.4 1.3 5.7 Run 2 7/19/201111:32:20 19.4 1.3 5.8 Run 2 7/19/201111:32:40 19.4 1.3 5.7 Run 2 7/19/201111:33:00 19.4 1.3 5.7 Run 2 7/19/201111:33:20 19.4 1.3 5.7 Run 2 7/19/201111:33:40 19.4 1.3 5.5 Run 2 7/19/201111:34:00 19.4 1.3 5.5 Run 2 7/19/201111:34:20 19.4 1.3 5.5 Run 2 7/19/201111:34:40 19.4 1.3 5.5 Run 2 7/19/201111:35:00 19.4 1.3 5.6 Run2 7/19/201111:35:20 19.4 1.3 5.7 Run 2 7/19/201111:35:40 19.4 1.3 5.8 Run 2 7/19/201111:36:00 19.4 1.3 5.8 Run 2 7/19/201111:36:20 19.4 1.3 5.6 Run 2 7/19/201111:36:40 19.4 1.3 5.5 Run 2 7/19/201111:37:00 19.4 1.3 5.4 Run 2 7/19/201111:37:20 19.4 1.3 5.3 Run 2 7/19/201111:37:40 19.4 1.3 5.3 Run 2 7/19/201111:38:00 19.4 1.3 5.3 Run2 7/19/201111:38:20 19.4 1.4 5.4 Run 2 7/19/201111:38:40 19.4 1.4 5.5 Run2 7/19/201111:39:00 19.4 1.3 5.5 Run 2 7/19/201111:39:20 19.4 1.3 5.5 Run2 7/19/201111:39:40 19.4 1.3 5.5 Run 2 7/19/201111:40:00 19.4 1.3 5.4 Run 2 7/19/201111:40:20 19.4 1.3 5.6 Run 2 7/19/201111:40:40 19.4 1.3 5.8 Run 2 7/19/201111:41:00 19.4 1.3 6.0 Run2 7/19/201111:41:20 19.4 1.3 6.0 Run 2 7/19/201111:41:40 19.4 1.3 6.0 Run 2 7/19/201111:42:00 19.4 1.3 6.2 Run 2 7/19/201111:42:20 19.4 1.3 6.3 Run2 7/19/201111:42:40 19.4 1.3 6.1 Run 2 7/19/201111:43:00 19.4 1.3 5.9 Run 2 7/19/201111:43:20 19.4 1.3 5.9 Run 2 7/19/201111:43:40 19.4 1.3 5.8 Run 2 7/19/201111:44:00 19.4 1.3 5.8 Run 2 7/19/201111:44:20 19.4 1.3 5.7 Run 2 7/19/201111:44:40 19.4 1.3 5.7 Run2 7/19/201111:45:00 19.4 1.3 5.7 Run 2 7/19/201111:45:20 19.4 1.3 5.7 Run 2 7/19/201111:45:40 19.4 1.3 5.8 Run 2 7/19/201111:46:00 19.4 1.3 5.8 Run 2 7/19/201111:46:20 19.4 1.3 5.7 Run 2 7/19/201111:46:40 19.4 1.3 5.5 Run 2 7/19/201111:47:00 19.4 1.3 5.3 Run 2 7/19/201111:47:20 19.4 1.3 5.1 Run 2 7/19/201111:47:40 19.4 1.3 4.9 Run 2 7/19/201111:48:00 19.4 1.3 4.7 Run 2 7/19/201111:48:20 19.4 1.3 4.5 Run 2 7/19/201111:48:40 19.4 1.3 4.3 Run 2 7/19/201111:49:00 19.4 1.3 4.3 Run 2 7/19/201111:49:20 19.4 1.3 4.2 Run2

Page 11 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace StackA

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/201111:28:40 19.4 1.3 5.8 Run 2 7/19/201111:29:00 19.4 1.3 5.9 Run 2 7/19/201111:29:20 19.4 1.3 5.8 Run 2 7/19/201111:29:40 19.4 1.3 5.6 Run 2 7/19/201111:30:00 19.4 1.3 5.4 Run 2 7/19/201111:30:20 19.4 1.3 5.5 Run 2 7/19/201111:30:40 19.4 1.3 5.5 Run 2 7/19/201111:31:00 19.4 1.3 5.6 Run 2 7/19/201111:31:20 19.4 1.3 5.6 Run 2 7/19/201111:31:40 19.4 1.3 5.7 Run 2 7/19/201111:32:00 19.4 1.3 5.7 Run 2 7/19/201111:32:20 19.4 1.3 5.8 Run 2 7/19/201111:32:40 19.4 1.3 5.7 Run 2 7/19/201111:33:00 19.4 1.3 5.7 Run 2 7/19/201111:33:20 19.4 1.3 5.7 Run 2 7/19/201111:33:40 19.4 1.3 5.5 Run 2 7/19/201111:34:00 19.4 1.3 5.5 Run 2 7/19/201111:34:20 19.4 1.3 5.5 Run 2 7/19/201111:34:40 19.4 1.3 5.5 Run 2 7/19/201111:35:00 19.4 1.3 5.6 Run2 7/19/201111:35:20 19.4 1.3 5.7 Run 2 7/19/201111:35:40 19.4 1.3 5.8 Run 2 7/19/201111:36:00 19.4 1.3 5.8 Run 2 7/19/201111:36:20 19.4 1.3 5.6 Run 2 7/19/201111:36:40 19.4 1.3 5.5 Run 2 7/19/201111:37:00 19.4 1.3 5.4 Run 2 7/19/201111:37:20 19.4 1.3 5.3 Run 2 7/19/201111:37:40 19.4 1.3 5.3 Run 2 7/19/201111:38:00 19.4 1.3 5.3 Run2 7/19/201111:38:20 19.4 1.4 5.4 Run 2 7/19/201111:38:40 19.4 1.4 5.5 Run2 7/19/201111:39:00 19.4 1.3 5.5 Run 2 7/19/201111:39:20 19.4 1.3 5.5 Run2 7/19/201111:39:40 19.4 1.3 5.5 Run 2 7/19/201111:40:00 19.4 1.3 5.4 Run 2 7/19/201111:40:20 19.4 1.3 5.6 Run 2 7/19/201111:40:40 19.4 1.3 5.8 Run 2 7/19/201111:41:00 19.4 1.3 6.0 Run2 7/19/201111:41:20 19.4 1.3 6.0 Run 2 7/19/201111:41:40 19.4 1.3 6.0 Run 2 7/19/201111:42:00 19.4 1.3 6.2 Run 2 7/19/201111:42:20 19.4 1.3 6.3 Run2 7/19/201111:42:40 19.4 1.3 6.1 Run 2 7/19/201111:43:00 19.4 1.3 5.9 Run 2 7/19/201111:43:20 19.4 1.3 5.9 Run 2 7/19/201111:43:40 19.4 1.3 5.8 Run 2 7/19/201111:44:00 19.4 1.3 5.8 Run 2 7/19/201111:44:20 19.4 1.3 5.7 Run 2 7/19/201111:44:40 19.4 1.3 5.7 Run2 7/19/201111:45:00 19.4 1.3 5.7 Run 2 7/19/201111:45:20 19.4 1.3 5.7 Run 2 7/19/201111:45:40 19.4 1.3 5.8 Run 2 7/19/201111:46:00 19.4 1.3 5.8 Run 2 7/19/201111:46:20 19.4 1.3 5.7 Run 2 7/19/201111:46:40 19.4 1.3 5.5 Run 2 7/19/201111:47:00 19.4 1.3 5.3 Run 2 7/19/201111:47:20 19.4 1.3 5.1 Run 2 7/19/201111:47:40 19.4 1.3 4.9 Run 2 7/19/201111:48:00 19.4 1.3 4.7 Run 2 7/19/201111:48:20 19.4 1.3 4.5 Run 2 7/19/201111:48:40 19.4 1.3 4.3 Run 2 7/19/201111:49:00 19.4 1.3 4.3 Run 2 7/19/201111:49:20 19.4 1.3 4.2 Run2

Page 11 of 17ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota FurnaceStackA

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/201111:49:40 19.4 1.3 4.2 Run 2 7/19/201111:50:00 19.4 1.3 4.2 Run 2 7/19/201111:50:20 19.4 1.3 4.3 Run2 7/19/201111:50:40 19.4 1.3 4.3 Run 2 7/19/201111:51:00 19.4 1.3 4.4 Run 2 7/19/201111:51:20 19.4 1.3 4.5 Run 2 7/19/201111:51:40 19.4 1.3 4.6 Run 2 7/19/201111:52:00 19.4 1.3 4.6 7/19/201111:52:20 19.4 1.3 4.6 7/19/201111:52:40 19.4 1.3 4.6 7/19/201111:53:00 19.4 1.3 4.6 7/19/201111:53:20 19.4 1.3 4.5 7/19/201111:53:40 19.4 1.4 4.4 7/19/201111:54:00 19.4 1.4 4.3 7/19/201111:54:20 19.4 1.4 4.4 7/19/201111:54:40 19.4 1.3 4.5 7/19/201111:55:00 19.4 1.3 4.4 7/19/201111:55:20 19.4 1.3 4.2 7/19/201111:55:40 19.4 1.3 4.2 7/19/201111:56:00 19.4 1.3 4.3 7/19/201111:56:20 19.4 1.3 4.3 7/19/201111:56:40 19.4 1.3 4.4 7/19/201111:57:00 19.4 1.3 4.4 7/19/201111:57:20 19.4 1.3 4.3 7/19/201111:57:40 15.6 1.0 4.3 7/19/201111:58:00 0.5 0.1 3.7 BiasDrift Check 7/19/201111:58:20 0.0 0.1 2.2 BiasDrift Check 7/19/201111:58:40 0.0 0.0 0.6 BiasDrift Check 7/19/201111:59:00 0.0 0.0 0.0 BiasDrift Check 7/19/201111:59:20 0.0 0.0 -0.1 BiasDrift Check 7/19/201111:59:40 0.0 0.0 0.0 Bias DriftCheck 7/19/201112:00:00 0.0 0.0 0.2 N2 Zero BiasDriftCheck 7/19/201112:00:20 0.0 0.0 0.2 Bias DriftCheck 7/19/201112:00:40 0.0 0.0 0.1 Bias DriftCheck 7/19/201112:01:00 1.5 0.1 0.0 Bias DriftCheck 7/19/201112:01:20 6.5 6.5 -0.1 BiasDriftCheck 7/19/201112:01:40 8.9 8.9 -0.4 BiasDriftCheck 7/19/201112:02:00 8.9 8.9 -0.8 BiasDrift Check 7/19/201112:02:20 8.9 9.0 -0.9 BiasDriftCheck 7/19/201112:02:40 8.9 9.0 -0.9 029.0/C029.0 BiasDriftCheck 7/19/201112:03:00 8.9 9.0 -1.0 Bias DriftCheck 7/19/201112:03:20 4.7 4.6 -D.8 Bias DriftCheck 7/19/201112:03:40 0.0 0.2 5.0 Bias DriftCheck 7/19/201112:04:00 0.0 0.2 19.0 Bias DriftCheck 7/19/201112:04:20 0.0 0.1 24.0 BiasDrift Check 7/19/201112:04:40 0.0 0.1 25.6 BiasDriftCheck 7/19/201112:05:00 0.0 0.1 26.0 S02 27.0 ppm BiasDriftCheck 7/19/201112:05:20 0.0 0.1 26.0 Bias DriftCheck 7/19/201112:05:40 1.1 0.2 32.1 Bias DriftCheck 7/19/201112:06:00 0.0 0.1 14.6 Bias DriftCheck 7/19/201112:06:20 0.0 0.1 4.0 BiasDrift Check 7/19/201112:06:40 0.0 0.1 3.0 BiasDriftCheck 7/19/201112:07:00 0.0 0.1 2.9 BiasDriftCheck 7/19/201112:07:20 0.0 0.1 2.7 BiasDriftCheck 7/19/201112:07:40 0.0 0.0 2.7 Bias DriftCheck 7/19/201112:08:00 0.0 0.0 2.7 Bias DriftCheck 7/19/201112:08:20 0.0 0.0 2.6 BiasDriftCheck 7/19/201112:08:40 0.0 0.0 2.9 Bias Drift Check 7/19/201112:09:00 0.0 0.0 3.0 BiasDrift Check 7/19/201112:09:20 0.0 0.0 2.8 BiasDriftCheck 7/19/201112:09:40 0.0 0.0 2.8 BiasDriftCheck 7/19/201112:10:00 0.0 0.0 2.8 Bias DriftCheck 7/19/201112:10:20 0.0 0.0 2.8 Bias DriftCheck

Page 12 of 17 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota FurnaceStackA

TIMESTAMP °2.% CO2 • % S02. ppm Notes 7/19/201111:49:40 19.4 1.3 4.2 Run 2 7/19/201111:50:00 19.4 1.3 4.2 Run 2 7/19/201111:50:20 19.4 1.3 4.3 Run2 7/19/201111:50:40 19.4 1.3 4.3 Run 2 7/19/201111:51:00 19.4 1.3 4.4 Run 2 7/19/201111:51:20 19.4 1.3 4.5 Run 2 7/19/201111:51:40 19.4 1.3 4.6 Run 2 7/19/201111:52:00 19.4 1.3 4.6 7/19/201111:52:20 19.4 1.3 4.6 7/19/201111:52:40 19.4 1.3 4.6 7/19/201111:53:00 19.4 1.3 4.6 7/19/201111:53:20 19.4 1.3 4.5 7/19/201111:53:40 19.4 1.4 4.4 7/19/201111:54:00 19.4 1.4 4.3 7/19/201111:54:20 19.4 1.4 4.4 7/19/201111:54:40 19.4 1.3 4.5 7/19/201111:55:00 19.4 1.3 4.4 7/19/201111:55:20 19.4 1.3 4.2 7/19/201111:55:40 19.4 1.3 4.2 7/19/201111:56:00 19.4 1.3 4.3 7/19/201111:56:20 19.4 1.3 4.3 7/19/201111:56:40 19.4 1.3 4.4 7/19/201111:57:00 19.4 1.3 4.4 7/19/201111:57:20 19.4 1.3 4.3 7/19/201111:57:40 15.6 1.0 4.3 7/19/201111:58:00 0.5 0.1 3.7 BiasDrift Check 7/19/201111:58:20 0.0 0.1 2.2 BiasDrift Check 7/19/201111:58:40 0.0 0.0 0.6 BiasDrift Check 7/19/201111:59:00 0.0 0.0 0.0 BiasDrift Check 7/19/201111:59:20 0.0 0.0 -0.1 BiasDrift Check 7/19/201111:59:40 0.0 0.0 0.0 Bias DriftCheck 7/19/201112:00:00 0.0 0.0 0.2 N2 Zero BiasDriftCheck 7/19/201112:00:20 0.0 0.0 0.2 Bias DriftCheck 7/19/201112:00:40 0.0 0.0 0.1 Bias DriftCheck 7/19/201112:01:00 1.5 0.1 0.0 Bias DriftCheck 7/19/201112:01:20 6.5 6.5 -0.1 BiasDriftCheck 7/19/201112:01:40 8.9 8.9 -0.4 BiasDriftCheck 7/19/201112:02:00 8.9 8.9 -0.8 BiasDrift Check 7/19/201112:02:20 8.9 9.0 -0.9 BiasDriftCheck 7/19/201112:02:40 8.9 9.0 -0.9 029.0/C029.0 BiasDriftCheck 7/19/201112:03:00 8.9 9.0 -1.0 Bias DriftCheck 7/19/201112:03:20 4.7 4.6 -D.8 Bias DriftCheck 7/19/201112:03:40 0.0 0.2 5.0 Bias DriftCheck 7/19/201112:04:00 0.0 0.2 19.0 Bias DriftCheck 7/19/201112:04:20 0.0 0.1 24.0 BiasDrift Check 7/19/201112:04:40 0.0 0.1 25.6 BiasDriftCheck 7/19/201112:05:00 0.0 0.1 26.0 S02 27.0 ppm BiasDriftCheck 7/19/201112:05:20 0.0 0.1 26.0 Bias DriftCheck 7/19/201112:05:40 1.1 0.2 32.1 Bias DriftCheck 7/19/201112:06:00 0.0 0.1 14.6 Bias DriftCheck 7/19/201112:06:20 0.0 0.1 4.0 BiasDrift Check 7/19/201112:06:40 0.0 0.1 3.0 BiasDriftCheck 7/19/201112:07:00 0.0 0.1 2.9 BiasDriftCheck 7/19/201112:07:20 0.0 0.1 2.7 BiasDriftCheck 7/19/201112:07:40 0.0 0.0 2.7 Bias DriftCheck 7/19/201112:08:00 0.0 0.0 2.7 Bias DriftCheck 7/19/201112:08:20 0.0 0.0 2.6 BiasDriftCheck 7/19/201112:08:40 0.0 0.0 2.9 Bias Drift Check 7/19/201112:09:00 0.0 0.0 3.0 BiasDrift Check 7/19/201112:09:20 0.0 0.0 2.8 BiasDriftCheck 7/19/201112:09:40 0.0 0.0 2.8 BiasDriftCheck 7/19/201112:10:00 0.0 0.0 2.8 Bias DriftCheck 7/19/201112:10:20 0.0 0.0 2.8 Bias DriftCheck

Page 12 of 17ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace Stack A

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/19/201112:10:40 3.6 0.3 2.8 Bias DriftCheck 7/19/201112:11:00 19.2 1.2 4.8 In stack 7/19/201112:11:20 19.5 1.2 7.4 In stack 7/19/201112:11:40 19.5 1.2 7.6 In stack 7/19/201112:12:00 19.5 1.2 7.1 In stack 7/19/201112:12:20 19.5 1.2 6.8 In stack 7/19/201112:12:40 19.5 1.2 6.7 In stack 7/19/201112:13:00 19.5 1.2 6.6 In stack 7/19/201112:13:20 19.5 1.2 6.6 In stack 7/19/201112:13:40 19.5 1.3 6.6 In stack 7/19/201112:14:00 19.5 1.3 6.6 In stack 7/19/201112:14:20 19.5 1.3 6.5 In stack 7/19/201112:14:40 19.5 1.3 6.4 In stack 7/19/201112:15:00 19.5 1.3 6.2 In stack 7/19/201112:15:20 19.5 1.3 6.1 In stack 7/19/201112:15:40 19.5 1.3 6.1 In stack 7/19/201112:16:00 19.5 1.3 6.2 In stack 7/19/201112:16:20 19.5 1.3 6.2 In stack 7/19/201112:16:40 19.5 1.3 6.2 In stack 7/19/201112:17:00 19.5 1.2 6.2 In stack 7/19/201112:17:20 19.5 1.2 6.2 In stack 7/19/201112:17:40 19.5 1.2 6.3 In stack 7/19/201112:18:00 19.5 1.2 6.5 In stack 7/19/201112:18:20 19.5 1.2 6.6 In stack 7/19/201112:18:40 19.5 1.2 6.6 In stack 7/19/201112:19:00 19.5 1.2 6.8 In stack 7/19/201112:19:20 19.5 1.2 6.9 In stack 7/19/201112:19:40 19.5 1.2 6.8 In stack 7/19/201112:20:00 19.5 1.2 6.8 In stack 7/19/201112:20:20 19.5 1.2 6.8 In stack 7/19/201112:20:40 19.5 1.2 6.9 In stack 7/19/201112:21:00 19.5 1.2 7.0 In stack 7/19/201112:21:20 19.5 1.2 7.2 In stack 7/19/201112:21:40 19.5 1.2 7.3 In stack 7/19/201112:22:00 19.5 1.2 7.3 In stack 7/19/201112:22:20 19.5 1.2 7.3 In stack 7/19/201112:22:40 19.5 1.2 7.3 In stack 7/19/201112:23:00 19.5 1.2 7.4 In stack 7/19/201112:23:20 19.5 1.2 7.3 In stack 7/19/201112:23:40 19.5 1.2 7.3 In stack 7/19/201112:24:00 19.5 1.2 7.4 In stack 7/19/201112:24:20 19.5 1.2 7.5 In stack 7/19/201112:24:40 19.5 1.2 7.5 In stack 7/19/201112:25:00 19.5 1.2 7.4 Run 3 7/19/201112:25:20 19.5 1.2 7.2 Run 3 7/19/201112:25:40 19.5 1.2 7.3 Run 3 7/19/201112:26:00 19.5 1.2 7.5 Run 3 7/19/201112:26:20 19.5 1.2 7.4 Run 3 7/19/201112:26:40 19.5 1.2 7.3 Run 3 7/19/201112:27:00 19.5 1.2 7.3 Run 3 7/19/201112:27:20 19.5 1.2 7.4 Run 3 7/19/201112:27:40 19.5 1.2 7.6 Run 3 7/19/201112:28:00 19.5 1.2 7.6 Run 3 7/19/201112:28:20 19.5 1.2 7.7 Run 3 7/19/201112:28:40 19.5 1.2 7.8 Run 3 7/19/201112:29:00 19.5 1.2 7.8 Run 3 7/19/201112:29:20 19.5 1.2 7.9 Run 3 7/19/201112:29:40 19.5 1.2 7.9 Run 3 7/19/201112:30:00 19.5 1.2 8.1 Run 3 7/19/201112:30:20 19.5 1.2 8.1 Run 3 7/19/201112:30:40 19.5 1.2 8.2 Run 3 7/19/201112:31:00 19.5 1.3 8.2 Run 3 7/19/201112:31:20 19.5 1.2 8.2 Run 3

Page 13 of 17 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace Stack A

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/19/201112:10:40 3.6 0.3 2.8 Bias DriftCheck 7/19/201112:11:00 19.2 1.2 4.8 In stack 7/19/201112:11:20 19.5 1.2 7.4 In stack 7/19/201112:11:40 19.5 1.2 7.6 In stack 7/19/201112:12:00 19.5 1.2 7.1 In stack 7/19/201112:12:20 19.5 1.2 6.8 In stack 7/19/201112:12:40 19.5 1.2 6.7 In stack 7/19/201112:13:00 19.5 1.2 6.6 In stack 7/19/201112:13:20 19.5 1.2 6.6 In stack 7/19/201112:13:40 19.5 1.3 6.6 In stack 7/19/201112:14:00 19.5 1.3 6.6 In stack 7/19/201112:14:20 19.5 1.3 6.5 In stack 7/19/201112:14:40 19.5 1.3 6.4 In stack 7/19/201112:15:00 19.5 1.3 6.2 In stack 7/19/201112:15:20 19.5 1.3 6.1 In stack 7/19/201112:15:40 19.5 1.3 6.1 In stack 7/19/201112:16:00 19.5 1.3 6.2 In stack 7/19/201112:16:20 19.5 1.3 6.2 In stack 7/19/201112:16:40 19.5 1.3 6.2 In stack 7/19/201112:17:00 19.5 1.2 6.2 In stack 7/19/201112:17:20 19.5 1.2 6.2 In stack 7/19/201112:17:40 19.5 1.2 6.3 In stack 7/19/201112:18:00 19.5 1.2 6.5 In stack 7/19/201112:18:20 19.5 1.2 6.6 In stack 7/19/201112:18:40 19.5 1.2 6.6 In stack 7/19/201112:19:00 19.5 1.2 6.8 In stack 7/19/201112:19:20 19.5 1.2 6.9 In stack 7/19/201112:19:40 19.5 1.2 6.8 In stack 7/19/201112:20:00 19.5 1.2 6.8 In stack 7/19/201112:20:20 19.5 1.2 6.8 In stack 7/19/201112:20:40 19.5 1.2 6.9 In stack 7/19/201112:21:00 19.5 1.2 7.0 In stack 7/19/201112:21:20 19.5 1.2 7.2 In stack 7/19/201112:21:40 19.5 1.2 7.3 In stack 7/19/201112:22:00 19.5 1.2 7.3 In stack 7/19/201112:22:20 19.5 1.2 7.3 In stack 7/19/201112:22:40 19.5 1.2 7.3 In stack 7/19/201112:23:00 19.5 1.2 7.4 In stack 7/19/201112:23:20 19.5 1.2 7.3 In stack 7/19/201112:23:40 19.5 1.2 7.3 In stack 7/19/201112:24:00 19.5 1.2 7.4 In stack 7/19/201112:24:20 19.5 1.2 7.5 In stack 7/19/201112:24:40 19.5 1.2 7.5 In stack 7/19/201112:25:00 19.5 1.2 7.4 Run 3 7/19/201112:25:20 19.5 1.2 7.2 Run 3 7/19/201112:25:40 19.5 1.2 7.3 Run 3 7/19/201112:26:00 19.5 1.2 7.5 Run 3 7/19/201112:26:20 19.5 1.2 7.4 Run 3 7/19/201112:26:40 19.5 1.2 7.3 Run 3 7/19/201112:27:00 19.5 1.2 7.3 Run 3 7/19/201112:27:20 19.5 1.2 7.4 Run 3 7/19/201112:27:40 19.5 1.2 7.6 Run 3 7/19/201112:28:00 19.5 1.2 7.6 Run 3 7/19/201112:28:20 19.5 1.2 7.7 Run 3 7/19/201112:28:40 19.5 1.2 7.8 Run 3 7/19/201112:29:00 19.5 1.2 7.8 Run 3 7/19/201112:29:20 19.5 1.2 7.9 Run 3 7/19/201112:29:40 19.5 1.2 7.9 Run 3 7/19/201112:30:00 19.5 1.2 8.1 Run 3 7/19/201112:30:20 19.5 1.2 8.1 Run 3 7/19/201112:30:40 19.5 1.2 8.2 Run 3 7/19/201112:31:00 19.5 1.3 8.2 Run 3 7/19/201112:31:20 19.5 1.2 8.2 Run 3

Page 13 of 17ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate 7/19/11 9/10/2011 Virginia. Minnesota FurnaceStack A

TIMESTAMP O2.% CO2 •% S02. ppm Notes 7/19/201112:31:40 19.5 1.2 8.2 Run 3 7/19/201112:32:00 19.5 1.2 8.2 Run 3 7/19/201112:32:20 19.5 1.2 8.3 Run 3 7/19/201112:32:40 19.5 1.2 8.4 Run 3 7/19/201112:33:00 19.5 1.2 8.5 Run 3 7/19/201112:33:20 19.5 1.2 8.6 Run 3 7/19/201112:33:40 19.5 1.2 8.7 Run 3 7/19/201112:34:00 19.5 1.2 8.7 Run 3 7/19/201112:34:20 19.5 1.2 8.9 Run 3 7/19/201112:34:40 19.5 1.2 8.9 Run 3 7/19/201112:35:00 19.5 1.2 8.9 Run 3 7/19/201112:35:20 19.5 1.3 8.7 Run 3 7/19/201112:35:40 19.5 1.2 8.6 Run 3 7/19/201112:36:00 19.5 1.3 8.4 Run 3 7/19/201112:36:20 19.5 1.3 8.1 Run 3 7/19/201112:36:40 19.5 1.3 7.7 Run 3 7/19/201112:37:00 19.5 1.3 7.5 Run 3 7/19/201112:37:20 19.5 1.3 7.5 Run 3 7/19/201112:37:40 19.5 1.3 7.4 Run 3 7/19/201112:38:00 19.5 1.3 7.3 Run 3 7/19/201112:38:20 19.5 1.3 7.3 Run 3 7/19/201112:38:40 19.5 1.3 7.3 Run 3 7/19/201112:39:00 19.5 1.3 7.2 Run 3 7/19/201112:39:20 19.5 1.3 7.2 Run 3 7/19/201112:39:40 19.5 1.2 7.2 Run 3 7/19/201112:40:00 19.5 1.2 7.2 Run 3 7/19/201112:40:20 19.5 1.2 7.3 Run 3 7/19/201112:40:40 19.5 1.2 7.4 Run3 7/19/201112:41:00 19.5 1.2 7.6 Run 3 7/19/201112:41:20 19.5 1.2 7.7 Run 3 7/19/201112:41:40 19.5 1.2 7.8 Run 3 7/19/201112:42:00 19.5 1.2 7.7 Run 3 7/19/201112:42:20 19.5 1.2 7.6 Run 3 7/19/201112:42:40 19.5 1.2 7.6 Run 3 7/19/201112:43:00 19.5 1.2 7.7 Run 3 7/19/201112:43:20 19.5 1.2 7.9 Run 3 7/19/201112:43:40 19.5 1.2 7.9 Run 3 7/19/201112:44:00 19.5 1.2 7.8 Run 3 7/19/201112:44:20 19.5 1.2 7.7 Run 3 7/19/201112:44:40 19.5 1.2 7.5 Run 3 7/19/201112:45:00 19.5 1.2 7.3 Run 3 7/19/201112:45:20 19.5 1.2 7.3 Run 3 7/19/201112:45:40 19.5 1.2 7.3 Run 3 7/19/201112:46:00 19.5 1.2 7.2 Run 3 7/19/201112:46:20 19.5 1.2 7.2 Run 3 7/19/201112:46:40 19.5 1.2 7.1 Run 3 7/19/201112:47:00 19.5 1.2 7.1 Run 3 7/19/201112:47:20 19.5 1.2 6.9 Run 3 7/19/201112:47:40 19.5 1.2 6.7 Run 3 7/19/201112:48:00 19.5 1.2 6.8 Run 3 7/19/201112:48:20 19.5 1.2 6.8 Run 3 7/19/201112:48:40 19.5 1.3 6.8 Run 3 7/19/201112:49:00 19.5 1.3 6.6 Run 3 7/19/201112:49:20 19.5 1.3 6.5 Run 3 7/19/201112:49:40 19.5 1.3 6.3 Run 3 7/19/201112:50:00 19.5 1.3 6.3 Run3 7/19/201112:50:20 19.5 1.3 6.3 Run 3 7/19/201112:50:40 19.5 1.3 6.2 Run 3 7/19/201112:51:00 19.5 1.3 6.1 Run 3 7/19/201112:51:20 19.5 1.3 5.9 Run 3 7/19/201112:51:40 19.5 1.3 5.7 Run 3 7/19/201112:52:00 19.5 1.3 5.6 Run 3 7/19/201112:52:20 19.4 1.3 5.6 Run 3

Page 14of 17 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate 7/19/11 9/10/2011 Virginia. Minnesota FurnaceStack A

TIMESTAMP O2.% CO2 •% S02. ppm Notes 7/19/201112:31:40 19.5 1.2 8.2 Run 3 7/19/201112:32:00 19.5 1.2 8.2 Run 3 7/19/201112:32:20 19.5 1.2 8.3 Run 3 7/19/201112:32:40 19.5 1.2 8.4 Run 3 7/19/201112:33:00 19.5 1.2 8.5 Run 3 7/19/201112:33:20 19.5 1.2 8.6 Run 3 7/19/201112:33:40 19.5 1.2 8.7 Run 3 7/19/201112:34:00 19.5 1.2 8.7 Run 3 7/19/201112:34:20 19.5 1.2 8.9 Run 3 7/19/201112:34:40 19.5 1.2 8.9 Run 3 7/19/201112:35:00 19.5 1.2 8.9 Run 3 7/19/201112:35:20 19.5 1.3 8.7 Run 3 7/19/201112:35:40 19.5 1.2 8.6 Run 3 7/19/201112:36:00 19.5 1.3 8.4 Run 3 7/19/201112:36:20 19.5 1.3 8.1 Run 3 7/19/201112:36:40 19.5 1.3 7.7 Run 3 7/19/201112:37:00 19.5 1.3 7.5 Run 3 7/19/201112:37:20 19.5 1.3 7.5 Run 3 7/19/201112:37:40 19.5 1.3 7.4 Run 3 7/19/201112:38:00 19.5 1.3 7.3 Run 3 7/19/201112:38:20 19.5 1.3 7.3 Run 3 7/19/201112:38:40 19.5 1.3 7.3 Run 3 7/19/201112:39:00 19.5 1.3 7.2 Run 3 7/19/201112:39:20 19.5 1.3 7.2 Run 3 7/19/201112:39:40 19.5 1.2 7.2 Run 3 7/19/201112:40:00 19.5 1.2 7.2 Run 3 7/19/201112:40:20 19.5 1.2 7.3 Run 3 7/19/201112:40:40 19.5 1.2 7.4 Run3 7/19/201112:41:00 19.5 1.2 7.6 Run 3 7/19/201112:41:20 19.5 1.2 7.7 Run 3 7/19/201112:41:40 19.5 1.2 7.8 Run 3 7/19/201112:42:00 19.5 1.2 7.7 Run 3 7/19/201112:42:20 19.5 1.2 7.6 Run 3 7/19/201112:42:40 19.5 1.2 7.6 Run 3 7/19/201112:43:00 19.5 1.2 7.7 Run 3 7/19/201112:43:20 19.5 1.2 7.9 Run 3 7/19/201112:43:40 19.5 1.2 7.9 Run 3 7/19/201112:44:00 19.5 1.2 7.8 Run 3 7/19/201112:44:20 19.5 1.2 7.7 Run 3 7/19/201112:44:40 19.5 1.2 7.5 Run 3 7/19/201112:45:00 19.5 1.2 7.3 Run 3 7/19/201112:45:20 19.5 1.2 7.3 Run 3 7/19/201112:45:40 19.5 1.2 7.3 Run 3 7/19/201112:46:00 19.5 1.2 7.2 Run 3 7/19/201112:46:20 19.5 1.2 7.2 Run 3 7/19/201112:46:40 19.5 1.2 7.1 Run 3 7/19/201112:47:00 19.5 1.2 7.1 Run 3 7/19/201112:47:20 19.5 1.2 6.9 Run 3 7/19/201112:47:40 19.5 1.2 6.7 Run 3 7/19/201112:48:00 19.5 1.2 6.8 Run 3 7/19/201112:48:20 19.5 1.2 6.8 Run 3 7/19/201112:48:40 19.5 1.3 6.8 Run 3 7/19/201112:49:00 19.5 1.3 6.6 Run 3 7/19/201112:49:20 19.5 1.3 6.5 Run 3 7/19/201112:49:40 19.5 1.3 6.3 Run 3 7/19/201112:50:00 19.5 1.3 6.3 Run3 7/19/201112:50:20 19.5 1.3 6.3 Run 3 7/19/201112:50:40 19.5 1.3 6.2 Run 3 7/19/201112:51:00 19.5 1.3 6.1 Run 3 7/19/201112:51:20 19.5 1.3 5.9 Run 3 7/19/201112:51:40 19.5 1.3 5.7 Run 3 7/19/201112:52:00 19.5 1.3 5.6 Run 3 7/19/201112:52:20 19.4 1.3 5.6 Run 3

Page 14of 17ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota FurnaceStackA

TIMESTAMP O2.% CO2•% 

### 502• ppm Notes 7/19/201112:52:40 19.5 1.3 5.5 Run 3 7/19/201112:53:00 19.5 1.3 5.4 Run 3 7/19/201112:53:20 19.5 1.3 5.3 Run 3 7/19/201112:53:40 19.5 1.3 5.3 Run 3 7/19/201112:54:00 19.5 1.3 5.3 Run 3 7/19/201112:54:20 19.5 1.3 5.2 Run 3 7/19/201112:54:40 19.5 1.3 5.2 Run 3 7/19/201112:55:00 19.4 1.3 5.0 Run 3 7/19/201112:55:20 19.4 1.3 5.1 Run 3 7/19/201112:55:40 19.5 1.3 5.2 Run 3 7/19/201112:56:00 19.5 1.3 5.2 Run 3 7/19/201112:56:20 19.5 1.3 5.2 Run 3 7/19/201112:56:40 19.5 1.3 5.1 Run 3 7/19/201112:57:00 19.5 1.3 5.2 Run 3 7/19/201112:57:20 19.5 1.3 5.2 Run 3 7/19/201112:57:40 19.5 1.3 5.2 Run 3 7/19/201112:58:00 19.5 1.3 5.1 Run 3 7/19/201112:58:20 19.5 1.3 5.1 Run 3 7/19/201112:58:40 19.5 1.3 5.2 Run 3 7/19/201112:59:00 1.3 5.3 Run 3 7/19/201112:59:20·"

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### M. 4iQ 7/19/201113:00:00 7/19/201113:00:20 7/19/201113:00:40 7/19/201113:01:00 7/19/201113:01:20· 7/19/201113:01:40 7/19/201113:02:00 7/19/201113:02:20;

..h:: 7/19/201113:02:40" ./: 7/19/201113 !, I,,'; 7/19/201113:03:20;.: 7/19/201113:03:40 19.4 1.3 4.3 Run 3 7/19/201113:04:00 19.4 1.3 4.2 Run 3 7/19/201113:04:20 19.4 1.3 4.2 Run 3 7/19/201113:04:40 19.4 1.3 4.2 Run 3 7/19/201113:05:00 19.4 1.3 4.2 Run 3 7/19/201113:05:20 19.4 1.3 4.1 Run 3 7/19/201113:05:40 19.4 1.3 4.1 Run 3 7/19/201113:06:00 19.4 1.3 4.1 Run 3 7/19/201113:06:20 19.4 1.3 4.1 Run 3 7/19/201113:06:40 19.4 1.4 4.0 Run 3 7/19/201113:07:00 19.4 1.4 4.0 Run 3 7/19/201113:07:20 19.4 1.4 4.0 Run 3 7/19/201113:07:40 19.4 1.3 4.0 Run 3 7/19/201113:08:00 19.4 1.3 3.9 Run 3 7/19/201113:08:20 19.4 1.3 3.9 Run 3 7/19/201113:08:40 19.4 1.4 4.1 Run 3 7/19/201113:09:00 19.4 1.3 4.2 Run 3 7/19/201113:09:20 19.4 1.3 4.2 Run 3 7/19/201113:09:40 19.4 1.3 4.1 Run 3 7/19/201113:10:00 19.4 1.3 4.1 Run 3 7/19/201113:10:20 19.4 1.3 4.1 Run 3 7/19/201113:10:40 19.4 1.3 4.1 Run 3 7/19/201113:11:00 19.4 1.3 4.1 Run 3 7/19/201113:11:20 19.4 1.3 4.1 Run3 7/19/201113:11:40 19.4 1.3 4.1 Run 3 7/19/201113:12:00 19.4 1.3 4.2 Run 3 7/19/201113:12:20 19.4 1.3 4.2 Run 3 7/19/201113:12:40 19.4 1.3 4.3 Run3 7/19/201113:13:00 19.4 1.3 4.4 Run 3 7/19/201113:13:20 19.4 1.3 4.5 Run 3

Page 15of 17 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Furnace Stack A

TIMESTAMP O2.% CO2•% 

### 502• ppm Notes 7/19/201112:52:40 19.5 1.3 5.5 Run 3 7/19/201112:53:00 19.5 1.3 5.4 Run 3 7/19/201112:53:20 19.5 1.3 5.3 Run 3 7/19/201112:53:40 19.5 1.3 5.3 Run 3 7/19/201112:54:00 19.5 1.3 5.3 Run 3 7/19/201112:54:20 19.5 1.3 5.2 Run 3 7/19/201112:54:40 19.5 1.3 5.2 Run 3 7/19/201112:55:00 19.4 1.3 5.0 Run 3 7/19/201112:55:20 19.4 1.3 5.1 Run 3 7/19/201112:55:40 19.5 1.3 5.2 Run 3 7/19/201112:56:00 19.5 1.3 5.2 Run 3 7/19/201112:56:20 19.5 1.3 5.2 Run 3 7/19/201112:56:40 19.5 1.3 5.1 Run 3 7/19/201112:57:00 19.5 1.3 5.2 Run 3 7/19/201112:57:20 19.5 1.3 5.2 Run 3 7/19/201112:57:40 19.5 1.3 5.2 Run 3 7/19/201112:58:00 19.5 1.3 5.1 Run 3 7/19/201112:58:20 19.5 1.3 5.1 Run 3 7/19/201112:58:40 19.5 1.3 5.2 Run 3 7/19/201112:59:00 19.5 1.3 5.3 Run 3 7/19/201112:59:20·' 19;9

### O~~ ·$;2 

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### M. 4iQ 7/19/201113:00:00 

# *p:t 7/19/201113:00:20 

# ZP,' 7/19/201113:00:40 7/19/201113:01:00 7/19/201113:01:20· 7/19/201113:01:40 7/19/201113:02:00 7/19/201113:02:20;

..

# h::
7/19/201113:02:40?1:1111 

### 1:**7/19/201113:03:00k,1~ii'** q 1" !<, 7/19/201113:03:20.,!,,' , 7/19/201113:03:40 19.4 1.3 4.3 Run 3 7/19/201113:04:00 19.4 1.3 4.2 Run 3 7/19/201113:04:20 19.4 1.3 4.2 Run 3 7/19/201113:04:40 19.4 1.3 4.2 Run 3 7/19/201113:05:00 19.4 1.3 4.2 Run 3 7/19/201113:05:20 19.4 1.3 4.1 Run 3 7/19/201113:05:40 19.4 1.3 4.1 Run 3 7/19/201113:06:00 19.4 1.3 4.1 Run 3 7/19/201113:06:20 19.4 1.3 4.1 Run 3 7/19/201113:06:40 19.4 1.4 4.0 Run 3 7/19/201113:07:00 19.4 1.4 4.0 Run 3 7/19/201113:07:20 19.4 1.4 4.0 Run 3 7/19/201113:07:40 19.4 1.3 4.0 Run 3 7/19/201113:08:00 19.4 1.3 3.9 Run 3 7/19/201113:08:20 19.4 1.3 3.9 Run 3 7/19/201113:08:40 19.4 1.4 4.1 Run 3 7/19/201113:09:00 19.4 1.3 4.2 Run 3 7/19/201113:09:20 19.4 1.3 4.2 Run 3 7/19/201113:09:40 19.4 1.3 4.1 Run 3 7/19/201113:10:00 19.4 1.3 4.1 Run 3 7/19/201113:10:20 19.4 1.3 4.1 Run 3 7/19/201113:10:40 19.4 1.3 4.1 Run 3 7/19/201113:11:00 19.4 1.3 4.1 Run 3 7/19/201113:11:20 19.4 1.3 4.1 Run3 7/19/201113:11:40 19.4 1.3 4.1 Run 3 7/19/201113:12:00 19.4 1.3 4.2 Run 3 7/19/201113:12:20 19.4 1.3 4.2 Run 3 7/19/201113:12:40 19.4 1.3 4.3 Run3 7/19/201113:13:00 19.4 1.3 4.4 Run 3 7/19/201113:13:20 19.4 1.3 4.5 Run 3

Page 15 of 17ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia, Minnesota FurnaceStackA

TIMESTAMP O2 ,% CO2 ,% S02, ppm Notes 7/19/201113:13:40 19.4 1.3 4.7 Run 3 7/19/201113:14:00 19.4 1.2 4.8 Run 3 7/19/201113:14:20 19.4 1.2 4.9 Run 3 7/19/201113:14:40 19.4 1.2 5.0 Run 3 7/19/201113:15:00 19.4 1.2 5.0 Run 3 7/19/201113:15:20 19.4 1.2 5.0 Run 3 7/19/201113:15:40 19.4 1.2 5.1 Run 3 7/19/201113:16:00 19.4 1.2 5.2 Run 3 7/19/201113:16:20 19.5 1.2 5.3 Run 3 7/19/201113:16:40 19.5 1.2 5.3 Run 3 7/19/201113:17:00 19.4 1.2 5.2 Run 3 7/19/201113:17:20 19.4 1.2 5.1 Run 3 7/19/201113:17:40 19.4 1.3 5.0 Run 3 7/19/201113:18:00 19.4 1.3 4.9 Run 3 7/19/201113:18:20 19.4 1.3 4.9 Run 3 7/19/201113:18:40 19,4 1.3 4.9 Run 3 7/19/201113:19:00 19.4 1.3 4.9 Run 3 7/19/201113:19:20 19.4 1.3 4.7 Run 3 7/19/201113:19:40 19,4 1.3 4.5 Run 3 7/19/201113:20:00 19.4 1.3 4.4 Run 3 7/19/201113:20:20 19.4 1.3 4.6 Run 3 7/19/201113:20:40 19.4 1.3 4.9 Run 3 7/19/201113:21:00 19.4 1.3 5.1 Run 3 7/19/201113:21:20 19.4 1.3 5,1 Run 3 7/19/201113:21:40 19.4 1.3 5.0 Run 3 7/19/201113:22:00 19.4 1.3 4,9 Run 3 7/19/201113:22:20 19.4 1.3 5.0 Run 3 7/19/201113:22:40 19.4 1.3 5.2 Run 3 7/19/201113:23:00 19.4 1.3 5.5 Run 3 7/19/201113:23:20 19.4 1.3 5.6 Run3 7/19/201113:23:40 19.4 1.3 5.6 Run 3 7/19/201113:24:00 19.4 1.3 5.6 Run 3 7/19/201113:24:20 19.4 1.3 5.6 Run 3 7/19/201113:24:40 19.4 1.3 5.6 Run 3 7/19/201113:25:00 19.4 1.3 5.6 Run 3 7/19/201113:25:20 19.4 1.3 5.6 Run 3 7/19/201113:25:40 19.4 1.3 5.6 Run 3 7/19/201113:26:00 19.4 1.3 5.5 Run 3 7/19/201113:26:20 19.4 1.3 5.5 Run 3 7/19/201113:26:40 19.4 1.3 5.5 Run 3 7/19/201113:27:00 19.4 1.3 5.6 Run 3 7/19/201113:27:20 19.4 1.3 5.7 Run 3 7/19/201113:27:40 19.4 1.3 5.6 Run 3 7/19/201113:28:00 19.4 1.3 5.7 Run 3 7/19/201113:28:20 19.4 1.3 5.8 Run 3 7/19/201113:28:40 19.4 1.3 5.9 Run 3 7/19/201113:29:00 19.4 1.3 6.1 Run 3 7/19/201113:29:20 19.4 1.3 6.3 Run 3 7/19/201113:29:40 19.4 1.3 6.3 Run 3 7/19/201113:30:00 19.4 1.3 6.2 Run 3 7/19/201113:30:20 19.4 1.3 6.2 Run 3 7/19/201113:30:40 19.4 1.3 6.3 Run 3 7/19/201113:31:00 19.4 1.2 6.5 Run 3 7/19/201113:31:20 19.4 1.2 6.5 Run 3 7/19/201113:31:40 19.4 1.2 6.5 Run 3 7/19/201113:32:00 19.4 1.2 6.6 Run 3 7/19/201113:32:20 19.4 1.2 6.8 Run 3 7/19/201113:32:40 19.4 1.2 7.0 Run 3 7/19/201113:33:00 19.4 1.2 7.0 Run 3 7/19/201113:33:20 19.4 1.2 7.2 Run 3 7/19/201113:33:40 19.4 1.2 7.3 Run 3 7/19/201113:34:00 19.4 1.2 7.4 Run 3 7/19/201113:34:20 19.4 1.2 7.4 Run 3

Page 16 of 17 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia, Minnesota FurnaceStackA

TIMESTAMP O2 ,% CO2 ,% S02, ppm Notes 7/19/201113:13:40 19.4 1.3 4.7 Run 3 7/19/201113:14:00 19.4 1.2 4.8 Run 3 7/19/201113:14:20 19.4 1.2 4.9 Run 3 7/19/201113:14:40 19.4 1.2 5.0 Run 3 7/19/201113:15:00 19.4 1.2 5.0 Run 3 7/19/201113:15:20 19.4 1.2 5.0 Run 3 7/19/201113:15:40 19.4 1.2 5.1 Run 3 7/19/201113:16:00 19.4 1.2 5.2 Run 3 7/19/201113:16:20 19.5 1.2 5.3 Run 3 7/19/201113:16:40 19.5 1.2 5.3 Run 3 7/19/201113:17:00 19.4 1.2 5.2 Run 3 7/19/201113:17:20 19.4 1.2 5.1 Run 3 7/19/201113:17:40 19.4 1.3 5.0 Run 3 7/19/201113:18:00 19.4 1.3 4.9 Run 3 7/19/201113:18:20 19.4 1.3 4.9 Run 3 7/19/201113:18:40 19,4 1.3 4.9 Run 3 7/19/201113:19:00 19.4 1.3 4.9 Run 3 7/19/201113:19:20 19.4 1.3 4.7 Run 3 7/19/201113:19:40 19,4 1.3 4.5 Run 3 7/19/201113:20:00 19.4 1.3 4.4 Run 3 7/19/201113:20:20 19.4 1.3 4.6 Run 3 7/19/201113:20:40 19.4 1.3 4.9 Run 3 7/19/201113:21:00 19.4 1.3 5.1 Run 3 7/19/201113:21:20 19.4 1.3 5,1 Run 3 7/19/201113:21:40 19.4 1.3 5.0 Run 3 7/19/201113:22:00 19.4 1.3 4,9 Run 3 7/19/201113:22:20 19.4 1.3 5.0 Run 3 7/19/201113:22:40 19.4 1.3 5.2 Run 3 7/19/201113:23:00 19.4 1.3 5.5 Run 3 7/19/201113:23:20 19.4 1.3 5.6 Run3 7/19/201113:23:40 19.4 1.3 5.6 Run 3 7/19/201113:24:00 19.4 1.3 5.6 Run 3 7/19/201113:24:20 19.4 1.3 5.6 Run 3 7/19/201113:24:40 19.4 1.3 5.6 Run 3 7/19/201113:25:00 19.4 1.3 5.6 Run 3 7/19/201113:25:20 19.4 1.3 5.6 Run 3 7/19/201113:25:40 19.4 1.3 5.6 Run 3 7/19/201113:26:00 19.4 1.3 5.5 Run 3 7/19/201113:26:20 19.4 1.3 5.5 Run 3 7/19/201113:26:40 19.4 1.3 5.5 Run 3 7/19/201113:27:00 19.4 1.3 5.6 Run 3 7/19/201113:27:20 19.4 1.3 5.7 Run 3 7/19/201113:27:40 19.4 1.3 5.6 Run 3 7/19/201113:28:00 19.4 1.3 5.7 Run 3 7/19/201113:28:20 19.4 1.3 5.8 Run 3 7/19/201113:28:40 19.4 1.3 5.9 Run 3 7/19/201113:29:00 19.4 1.3 6.1 Run 3 7/19/201113:29:20 19.4 1.3 6.3 Run 3 7/19/201113:29:40 19.4 1.3 6.3 Run 3 7/19/201113:30:00 19.4 1.3 6.2 Run 3 7/19/201113:30:20 19.4 1.3 6.2 Run 3 7/19/201113:30:40 19.4 1.3 6.3 Run 3 7/19/201113:31:00 19.4 1.2 6.5 Run 3 7/19/201113:31:20 19.4 1.2 6.5 Run 3 7/19/201113:31:40 19.4 1.2 6.5 Run 3 7/19/201113:32:00 19.4 1.2 6.6 Run 3 7/19/201113:32:20 19.4 1.2 6.8 Run 3 7/19/201113:32:40 19.4 1.2 7.0 Run 3 7/19/201113:33:00 19.4 1.2 7.0 Run 3 7/19/201113:33:20 19.4 1.2 7.2 Run 3 7/19/201113:33:40 19.4 1.2 7.3 Run 3 7/19/201113:34:00 19.4 1.2 7.4 Run 3 7/19/201113:34:20 19.4 1.2 7.4 Run 3

Page 16 of 17ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Fumace StackA



### TIMESTAMP O2.% CO2• % 502•ppm Notes 7/19/201113:34:40 19.4 1.2 7.4 Run 3 7/19/201113:35:00 19.4 1.2 -7.4 Run 3 7/19/201113:35:20 19.4 1.2 7.4 Run 3 7/19/201113:35:40 19.4 1.2 7.4 Run 3 7/19/201113:36:00 19.4 1.2 7.4 7/19/201113:36:20 19.4 1.2 7.3 7/19/201113:36:40 19.4 1.3 7.3 7/19/201113:37:00 19.4 1.3 7.2 7/19/201113:37:20 19.4 1.3 7.2 7/19/201113:37:40 19.4 1.3 7.2 7/19/201113:38:00 19.4 1.3 7.2 7/19/201113:38:20 19.4 1.3 7.2 7/19/201113:38:40 10.6 0.7 7.1 7/19/201113:39:00 0.1 0.1 5.8 7/19/201113:39:20 0.0 0.0 2.9 7/19/201113:39:40 0.0 0.0 0.7 BiasDriftCheck 7/19/201113:40:00 0.0 0.0 0.0 Bias DriftCheck 7/19/201113:40:20 0.0 0.0 0.0 Bias DriftCheck 7/19/201113:40:40 0.0 0.0 0.0 Bias Drift Check 7/19/201113:41:00 0.0 0.0 -0.1 N2 Zero Bias Drift Check 7/19/201113:41:20 0.0 0.0 0.0 Bias Drift Check 7/19/201113:41:40 0.0 0.0 0.0 Bias Drift Check 7/19/201113:42:00 0.0 0.0 -0.1 Bias Drift Check 7/19/201113:42:20 3.7 0.3 0.0 Bias Drift Check 7/19/201113:42:40 7.7 7.7 0.3 Bias Drift Check 7/19/201113:43:00 8.8 8.9 0.0 Bias Drift Check 7/19/201113:43:20 8.8 8.9 -0.7 Bias Drift Check 7/19/201113:43:40 8.9 8.9 -0.9 BiasDrift Check 7/19/201113:44:00 8.9 8.9 -0.9 BiasDriftCheck 7/19/201113:44:20 8.9 9.0 -1.0 02 9.0/C02 9.0 BiasDriftCheck 7/19/201113:44:40 8.9 9.0 -1.1 Bias DriftCheck 7/19/201113:45:00 8.8 8.8 -1.0 BiasDriftCheck 7/19/201113:45:20 0.7 0.7 0.0 Bias DriftCheck 7/19/201113:45:40 0.0 0.2 13.3 Bias DriftCheck 7/19/201113:46:00 0.0 0.2 21.2 Bias DriftCheck 7/19/201113:46:20 0.0 0.1 24.4 Bias Drift Check 7/19/201113:46:40 0.0 0.1 25.4 Bias Drift Check 7/19/201113:47:00 0.0 0.1 25.8 Bias Drift Check 7/19/201113:47:20 0.0 0.1 25.7 Bias Drift Check 7/19/201113:47:40 0.0 0.1 26.0 BiasDrift Check 7/19/201113:48:00 0.0 0.1 26.3 50227.0ppm Bias DriftCheck 7/19/201113:48:20 0.0 0.1 26.2 Bias DriftCheck 7/19/201113:48:40 0.6 0.1 27.4 Bias DriftCheck 7/19/201113:49:00 0.0 0.1 25.0 Bias DriftCheck 7/19/201113:49:20 0.0 0.1 5.4 Bias Drift Check 7/19/201113:49:40 0.0 0.1 3.0 Bias DriftCheck 7/19/201113:50:00 0.0 0.0 2.8 BiasDrift Check 7/19/201113:50:20 0.0 0.0 2.5 Bias Drift Check 7/19/201113:50:40 0.0 0.0 2.6 BiasDrift Check 7/19/201113:51:00 0.0 0.0 2.6 BiasDrift Check 7/19/201113:51:20 0.0 0.0 2.4 BiasDrift Check 7/19/201113:51:40 0.0 0.0 2.6 Bias Drift Check 7/19/201113:52:00 0.0 0.0 2.6 BiasDrift Check 7/19/201113:52:20 0.0 0.0 2.5 Bias DriftCheck 7/19/201113:52:40 0.0 0.0 2.6 Bias DriftCheck 7/19/201113:53:00 0.0 0.0 2.7 Bias Drift Check 7/19/201113:53:20 11.5 0.7 3.3 BiasDriftCheck 7/19/201113:53:40 20.8 0.1 5.6 BiasDriftCheck 7/19/201113:54:00 20.9 0.1 4.8 BiasDrift Check

Page 17 of 17 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/19/11 9/10/2011 Virginia. Minnesota Fumace StackA



### TIMESTAMP O2.% CO2• % 502•ppm Notes 7/19/201113:34:40 19.4 1.2 7.4 Run 3 7/19/201113:35:00 19.4 1.2 -7.4 Run 3 7/19/201113:35:20 19.4 1.2 7.4 Run 3 7/19/201113:35:40 19.4 1.2 7.4 Run 3 7/19/201113:36:00 19.4 1.2 7.4 7/19/201113:36:20 19.4 1.2 7.3 7/19/201113:36:40 19.4 1.3 7.3 7/19/201113:37:00 19.4 1.3 7.2 7/19/201113:37:20 19.4 1.3 7.2 7/19/201113:37:40 19.4 1.3 7.2 7/19/201113:38:00 19.4 1.3 7.2 7/19/201113:38:20 19.4 1.3 7.2 7/19/201113:38:40 10.6 0.7 7.1 7/19/201113:39:00 0.1 0.1 5.8 7/19/201113:39:20 0.0 0.0 2.9 7/19/201113:39:40 0.0 0.0 0.7 BiasDriftCheck 7/19/201113:40:00 0.0 0.0 0.0 Bias DriftCheck 7/19/201113:40:20 0.0 0.0 0.0 Bias DriftCheck 7/19/201113:40:40 0.0 0.0 0.0 Bias Drift Check 7/19/201113:41:00 0.0 0.0 -0.1 N2 Zero Bias Drift Check 7/19/201113:41:20 0.0 0.0 0.0 Bias Drift Check 7/19/201113:41:40 0.0 0.0 0.0 Bias Drift Check 7/19/201113:42:00 0.0 0.0 -0.1 Bias Drift Check 7/19/201113:42:20 3.7 0.3 0.0 Bias Drift Check 7/19/201113:42:40 7.7 7.7 0.3 Bias Drift Check 7/19/201113:43:00 8.8 8.9 0.0 Bias Drift Check 7/19/201113:43:20 8.8 8.9 -0.7 Bias Drift Check 7/19/201113:43:40 8.9 8.9 -0.9 BiasDrift Check 7/19/201113:44:00 8.9 8.9 -0.9 BiasDriftCheck 7/19/201113:44:20 8.9 9.0 -1.0 02 9.0/C02 9.0 BiasDriftCheck 7/19/201113:44:40 8.9 9.0 -1.1 Bias DriftCheck 7/19/201113:45:00 8.8 8.8 -1.0 BiasDriftCheck 7/19/201113:45:20 0.7 0.7 0.0 Bias DriftCheck 7/19/201113:45:40 0.0 0.2 13.3 Bias DriftCheck 7/19/201113:46:00 0.0 0.2 21.2 Bias DriftCheck 7/19/201113:46:20 0.0 0.1 24.4 Bias Drift Check 7/19/201113:46:40 0.0 0.1 25.4 Bias Drift Check 7/19/201113:47:00 0.0 0.1 25.8 Bias Drift Check 7/19/201113:47:20 0.0 0.1 25.7 Bias Drift Check 7/19/201113:47:40 0.0 0.1 26.0 BiasDrift Check 7/19/201113:48:00 0.0 0.1 26.3 50227.0ppm Bias DriftCheck 7/19/201113:48:20 0.0 0.1 26.2 Bias DriftCheck 7/19/201113:48:40 0.6 0.1 27.4 Bias DriftCheck 7/19/201113:49:00 0.0 0.1 25.0 Bias DriftCheck 7/19/201113:49:20 0.0 0.1 5.4 Bias Drift Check 7/19/201113:49:40 0.0 0.1 3.0 Bias DriftCheck 7/19/201113:50:00 0.0 0.0 2.8 BiasDrift Check 7/19/201113:50:20 0.0 0.0 2.5 Bias Drift Check 7/19/201113:50:40 0.0 0.0 2.6 BiasDrift Check 7/19/201113:51:00 0.0 0.0 2.6 BiasDrift Check 7/19/201113:51:20 0.0 0.0 2.4 BiasDrift Check 7/19/201113:51:40 0.0 0.0 2.6 Bias Drift Check 7/19/201113:52:00 0.0 0.0 2.6 BiasDrift Check 7/19/201113:52:20 0.0 0.0 2.5 Bias DriftCheck 7/19/201113:52:40 0.0 0.0 2.6 Bias DriftCheck 7/19/201113:53:00 0.0 0.0 2.7 Bias Drift Check 7/19/201113:53:20 11.5 0.7 3.3 BiasDriftCheck 7/19/201113:53:40 20.8 0.1 5.6 BiasDriftCheck 7/19/201113:54:00 20.9 0.1 4.8 BiasDrift Check

Page 17 of 17ArcelorMittal Minorca Mine Virginia. Minnesota AverageAnalyzer Results Run O2

### .%

1 19.0 2 18.9 3 19.0

TIMESTAMP O2

### .% 7/20/2011 7:15:00 0.0 7/20/2011 7:15:20 0.0 7/20/20117:15:40 0.0 7/20/20117:16:00 0.0 7/20/20117:16:20 0.0 7/20/20117:16:40 0.0 7/20/2011 7:17:00 0.0 7/20/2011 7:17:20 8.6 7/20/2011 7:17:40 21.8 7/20/20117:18:00 21.9 7/20/20117:18:20 21.9 7/20/20117:18:40 21.9 7/20/20117:19:00 21.9 7/20/20117:19:20 21.9 7/20/2011 7:19:40 21.9 7/20/2011 7:20:00 19.7 7/20/2011 7:20:20 9.1 7/20/2011 7:20:40 9.0 7/20/2011 7:21:00 8.4 7/20/2011 7:21:20 0.5 7/20/2011 7:21:40 0.0 7/20/2011 7:22:00 0.0 7/20/2011 7:22:20 0.0 7/20/2011 7:22:40 0.0 7/20/2011 7:23:00 0.0 7/20/2011 7:23:20 0.0 7/20/20117:23:40 0.0 7/20/20117:24:00 0.0 7/20/20117:24:20 0.0 7/20/20117:24:40 0.1 7/20/20117:25:00 0.0 7/20/20117:25:20 0.0 7/20/2011 7:25:40 0.0 7/20/2011 7:26:00 0.9 7/20/20117:26:20 0.0 7/20/20117:26:40 0.0 7/20/20117:27:00 0.0 7/20/20117:54:00 20.7 7/20/20117:54:20 20.7 7/20/20117:54:40 20.7 7/20/20117:55:00 20.7 7/20/2011 7:55:20 20.7 7/20/2011 7:55:40 20.7 7/20/2011 7:56:00 20.8 7/20/20117:56:20 20.8 7/20/20117:56:40 20.7 7/20/2011 7:57:00 20.8 7/20/20117:57:20 20.8 7/20/20117:57:40 20.8 7/20/2011 7:58:00 20.8 7/20/2011 7:58:20 20.8 7/20/2011 7:58:40 20.8 7/20/2011 7:59:00 10.1 7/20/20117:59:20 0.1 7/20/20117:59:40 0.0 Data LoggerOutput Test Date 7/20/11

Furnace Stack B

CO2 •

### % S02. ppm 1.8 6.3 1.7 - 5.9 1.7 6.4

CO2•

### % S02. ppm

-0.3 -0.4 -0.3 -0.4 -0.3 -0.4 0.0 -0.2 0.0 0.0 0.0 0.0 0.0 0.0 1.7 -0.1 5.5 -0.4 5.5 -0.8 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.3 -0.9 9.1 -1.0 9.1 -0.9 7.9 -0.9 0.1 1.1 0.1 24.2 0.1 42.3 0.1 47.9 0.1 49.9 0.1 51.1 0.0 51.5 0.0 50.9 0.0 50.0 0.0 50.2 0.0 46.8 0.0 29.4 0.0 27.2 0.0 27.1 0.0 26.5 0.0 16.0 0.0 31.6 0.0 41.3 0.2 -0.7 0.2 -0.8 0.2 -0.8 0.2 -0.9 0.2 -0.8 0.1 -0.8 0.1 -0.8 0.1 -0.7 0.2 -0.7 0.1 -0.7 0.1 -0.8 0.1 -0.8 0.1 -0.8 0.1 -0.9 0.1 -1.0 0.1 -0.9 0.1 -0.7 0.0 -0.7
Page 1of 17 RunTimes 835-943 1015-1121 1155-1302 Barr Engineering 11/30/2011

Notes

N2Zero

0221.9/C02 5.5

02 9.0/C02 9.0

S02 50.2 ppm

S0227.0 ppm AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal

System Bias Check System Bias Check System Bias Check System Bias Check ArcelorMittal Minorca Mine Virginia. Minnesota AverageAnalyzer Results Run O2

### .%

1 19.0 2 18.9 3 19.0

TIMESTAMP O2

### .% 7/20/2011 7:15:00 0.0 7/20/2011 7:15:20 0.0 7/20/20117:15:40 0.0 7/20/20117:16:00 0.0 7/20/20117:16:20 0.0 7/20/20117:16:40 0.0 7/20/2011 7:17:00 0.0 7/20/2011 7:17:20 8.6 7/20/2011 7:17:40 21.8 7/20/20117:18:00 21.9 7/20/20117:18:20 21.9 7/20/20117:18:40 21.9 7/20/20117:19:00 21.9 7/20/20117:19:20 21.9 7/20/2011 7:19:40 21.9 7/20/2011 7:20:00 19.7 7/20/2011 7:20:20 9.1 7/20/2011 7:20:40 9.0 7/20/2011 7:21:00 8.4 7/20/2011 7:21:20 0.5 7/20/2011 7:21:40 0.0 7/20/2011 7:22:00 0.0 7/20/2011 7:22:20 0.0 7/20/2011 7:22:40 0.0 7/20/2011 7:23:00 0.0 7/20/2011 7:23:20 0.0 7/20/20117:23:40 0.0 7/20/20117:24:00 0.0 7/20/20117:24:20 0.0 7/20/20117:24:40 0.1 7/20/20117:25:00 0.0 7/20/20117:25:20 0.0 7/20/2011 7:25:40 0.0 7/20/2011 7:26:00 0.9 7/20/20117:26:20 0.0 7/20/20117:26:40 0.0 7/20/20117:27:00 0.0 7/20/20117:54:00 20.7 7/20/20117:54:20 20.7 7/20/20117:54:40 20.7 7/20/20117:55:00 20.7 7/20/2011 7:55:20 20.7 7/20/2011 7:55:40 20.7 7/20/2011 7:56:00 20.8 7/20/20117:56:20 20.8 7/20/20117:56:40 20.7 7/20/2011 7:57:00 20.8 7/20/20117:57:20 20.8 7/20/20117:57:40 20.8 7/20/2011 7:58:00 20.8 7/20/2011 7:58:20 20.8 7/20/2011 7:58:40 20.8 7/20/2011 7:59:00 10.1 7/20/20117:59:20 0.1 7/20/20117:59:40 0.0 Data LoggerOutput Test Date 7/20/11

Furnace Stack B

CO2 •

### % S02. ppm 1.8 6.3 1.7 - 5.9 1.7 6.4

CO2•

### % S02. ppm

-0.3 -0.4 -0.3 -0.4 -0.3 -0.4 0.0 -0.2 0.0 0.0 0.0 0.0 0.0 0.0 1.7 -0.1 5.5 -0.4 5.5 -0.8 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.3 -0.9 9.1 -1.0 9.1 -0.9 7.9 -0.9 0.1 1.1 0.1 24.2 0.1 42.3 0.1 47.9 0.1 49.9 0.1 51.1 0.0 51.5 0.0 50.9 0.0 50.0 0.0 50.2 0.0 46.8 0.0 29.4 0.0 27.2 0.0 27.1 0.0 26.5 0.0 16.0 0.0 31.6 0.0 41.3 0.2 -0.7 0.2 -0.8 0.2 -0.8 0.2 -0.9 0.2 -0.8 0.1 -0.8 0.1 -0.8 0.1 -0.7 0.2 -0.7 0.1 -0.7 0.1 -0.8 0.1 -0.8 0.1 -0.8 0.1 -0.9 0.1 -1.0 0.1 -0.9 0.1 -0.7 0.0 -0.7
Page 1of 17 RunTimes 835-943 1015-1121 1155-1302 Barr Engineering 11/30/2011

Notes

N2Zero

0221.9/C02 5.5

02 9.0/C02 9.0

S02 50.2 ppm

S0227.0 ppm AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal AnalyzerCal AnalyzerCal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal

System Bias Check System Bias Check System Bias Check System Bias CheckArcelorMiltal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/20/20118:00:00 0.0 0.0 0.0 System Bias Check 7/20/20118:00:20 0.0 0.0 0.4 N2 Zero System Bias Check 7/20/20118:00:40 0.0 0.0 0.6 System Bias Check 7/20/20118:01:00 0.0 0.0 0.8 System Bias Check 7/20/20118:01:20 1.8 0.1 0.8 System Bias Check 7/20/20118:01:40 0.0 0.0 10.3 System Bias Check 7/20/20118:02:00 0.0 0.1 23.6 System Bias Check 7/20/20118:02:20 0.0 0.0 25.6 System Bias Check 7/20/2011 8:02:40 0.0 0.1 26.2 System Bias Check 7/20/20118:03:00 0.0 0.1 26.4 System Bias Check 7/20/20118:03:20 0.0 0.1 26.5 S02 27.0 ppm System Bias Check 7/20/20118:03:40 3.0 0.1 29.4 System Bias Check 7/20/2011 8:04:00 0.1 0.1 20.9 System Bias Check 7/20/2011 8:04:20 0.0 0.1 6.2 System Bias Check 7/20/20118:04:40 0.0 0.1 4.5 System Bias Check 7/20/20118:05:00 0.0 0.1 4.2 System Bias Check 7/20/20118:05:20 0.0 0.1 4.3 System Bias Check 7/20/20118:05:40 0.0 0.1 4.3 System Bias Check 7/20/20118:06:00 0.0 0.1 4.0 System Bias Check 7/20/20118:06:20 0.0 0.1 4.2 System Bias Check 7/20/20118:06:40 7.1 0.1 4.1 System Bias Check 7/20/20118:07:00 11.0 2.4 3.1 System Bias Check 7/20/2011 8:07:20 9.0 8.8 2.1 System Bias Check 7/20/20118:07:40 8.9 8.9 0.8 System Bias Check 7/20/2011 8:08:00 8.9 9.0 0.1 System Bias Check 7/20/2011 8:08:20 8.9 9.0 -0.1 System Bias Check 7/20/2011 8:08:40 8.9 9.0 -0.1 System Bias Check 7/20/20118:09:00 8.9 9.0 -0.1 System Bias Check 7/20/20118:09:20 17.7 2.6 0.8 System Bias Check 7/20/20118:09:40 19.1 1.8 4.4 System Bias Check 7/20/20118:10:00 19.1 1.7 7.6 In Stack 7/20/20118:10:20 19.1 1.7 8.4 In Stack 7/20/20118:10:40 19.1 1.7 8.8 In Stack 7/20/20118:11:00 19.1 1.7 8.9 In Stack 7/20/20118:11:20 19.1 1.7 8.8 In Stack 7/20/20118:11:40 19.1 1.7 8.7 In Stack 7/20/2011 8:12:00 19.1 1.7 8.6 In Stack 7/20/2011 8:12:20 19.1 1.7 8.4 In Stack 7/20/2011 8:12:40 19.1 1.7 8.2 In Stack 7/20/2011 8:13:00 19.1 1.7 8.0 In Stack 7/20/2011 8:13:20 19.1 1.7 7.9 In Stack 7/20/2011 8:13:40 19.1 1.7 7.7 In Stack 7/20/2011 8:14:00 19.1 1.7 7.5 In Stack 7/20/2011 8:14:20 19.1 1.7 7.4 In Stack 7/20/20118:14:40 19.1 1.7 7.5 In Stack 7/20/20118:15:00 19.1 1.7 7.6 In Stack 7/20/20118:15:20 19.1 1.7 7.6 In Stack 7/20/2011 8:15:40 19.1 1.7 7.8 In Stack 7/20/2011 8:16:00 19.1 1.6 7.9 In Stack 7/20/20118:16:20 19.1 1.6 8.0 In Stack 7/20/20118:16:40 19.1 1.6 8.2 In Stack 7/20/20118:17:00 19.1 1.6 8.3 In Stack 7/20/20118:17:20 19.9 0.9 8.3 In Stack 7/20/20118:17:40 20.7 0.2 6.5 In Stack 7/20/20118:18:00 19.3 1.5 3.7 In Stack 7/20/20118:18:20 19.1 1.6 4.0 In Stack 7/20/20118:18:40 19.1 1.6 6.5 In Stack 7/20/20118:19:00 19.1 1.6 7.7 In Stack 7/20/20118:19:20 19.0 1.7 8.0 In Stack 7/20/20118:19:40 19.1 1.6 7.8 In Stack

Page 2of 17 ArcelorMiltal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/20/20118:00:00 0.0 0.0 0.0 System Bias Check 7/20/20118:00:20 0.0 0.0 0.4 N2 Zero System Bias Check 7/20/20118:00:40 0.0 0.0 0.6 System Bias Check 7/20/20118:01:00 0.0 0.0 0.8 System Bias Check 7/20/20118:01:20 1.8 0.1 0.8 System Bias Check 7/20/20118:01:40 0.0 0.0 10.3 System Bias Check 7/20/20118:02:00 0.0 0.1 23.6 System Bias Check 7/20/20118:02:20 0.0 0.0 25.6 System Bias Check 7/20/2011 8:02:40 0.0 0.1 26.2 System Bias Check 7/20/20118:03:00 0.0 0.1 26.4 System Bias Check 7/20/20118:03:20 0.0 0.1 26.5 S02 27.0 ppm System Bias Check 7/20/20118:03:40 3.0 0.1 29.4 System Bias Check 7/20/2011 8:04:00 0.1 0.1 20.9 System Bias Check 7/20/2011 8:04:20 0.0 0.1 6.2 System Bias Check 7/20/20118:04:40 0.0 0.1 4.5 System Bias Check 7/20/20118:05:00 0.0 0.1 4.2 System Bias Check 7/20/20118:05:20 0.0 0.1 4.3 System Bias Check 7/20/20118:05:40 0.0 0.1 4.3 System Bias Check 7/20/20118:06:00 0.0 0.1 4.0 System Bias Check 7/20/20118:06:20 0.0 0.1 4.2 System Bias Check 7/20/20118:06:40 7.1 0.1 4.1 System Bias Check 7/20/20118:07:00 11.0 2.4 3.1 System Bias Check 7/20/2011 8:07:20 9.0 8.8 2.1 System Bias Check 7/20/20118:07:40 8.9 8.9 0.8 System Bias Check 7/20/2011 8:08:00 8.9 9.0 0.1 System Bias Check 7/20/2011 8:08:20 8.9 9.0 -0.1 System Bias Check 7/20/2011 8:08:40 8.9 9.0 -0.1 System Bias Check 7/20/20118:09:00 8.9 9.0 -0.1 System Bias Check 7/20/20118:09:20 17.7 2.6 0.8 System Bias Check 7/20/20118:09:40 19.1 1.8 4.4 System Bias Check 7/20/20118:10:00 19.1 1.7 7.6 In Stack 7/20/20118:10:20 19.1 1.7 8.4 In Stack 7/20/20118:10:40 19.1 1.7 8.8 In Stack 7/20/20118:11:00 19.1 1.7 8.9 In Stack 7/20/20118:11:20 19.1 1.7 8.8 In Stack 7/20/20118:11:40 19.1 1.7 8.7 In Stack 7/20/2011 8:12:00 19.1 1.7 8.6 In Stack 7/20/2011 8:12:20 19.1 1.7 8.4 In Stack 7/20/2011 8:12:40 19.1 1.7 8.2 In Stack 7/20/2011 8:13:00 19.1 1.7 8.0 In Stack 7/20/2011 8:13:20 19.1 1.7 7.9 In Stack 7/20/2011 8:13:40 19.1 1.7 7.7 In Stack 7/20/2011 8:14:00 19.1 1.7 7.5 In Stack 7/20/2011 8:14:20 19.1 1.7 7.4 In Stack 7/20/20118:14:40 19.1 1.7 7.5 In Stack 7/20/20118:15:00 19.1 1.7 7.6 In Stack 7/20/20118:15:20 19.1 1.7 7.6 In Stack 7/20/2011 8:15:40 19.1 1.7 7.8 In Stack 7/20/2011 8:16:00 19.1 1.6 7.9 In Stack 7/20/20118:16:20 19.1 1.6 8.0 In Stack 7/20/20118:16:40 19.1 1.6 8.2 In Stack 7/20/20118:17:00 19.1 1.6 8.3 In Stack 7/20/20118:17:20 19.9 0.9 8.3 In Stack 7/20/20118:17:40 20.7 0.2 6.5 In Stack 7/20/20118:18:00 19.3 1.5 3.7 In Stack 7/20/20118:18:20 19.1 1.6 4.0 In Stack 7/20/20118:18:40 19.1 1.6 6.5 In Stack 7/20/20118:19:00 19.1 1.6 7.7 In Stack 7/20/20118:19:20 19.0 1.7 8.0 In Stack 7/20/20118:19:40 19.1 1.6 7.8 In Stack

Page 2of 17ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/20/20118:20:00 19.1 1.6 7.8 In Stack 7/20/20118:20:20 19.1 1.6 7.8 In Stack 7/20/20118:20:40 19.1 1.6 7.8 In Stack 7/20/20118:21:00 19.1 1.6 7.7 In Stack 7/20/20118:21:20 19.6 1.2 7.6 In Stack 7/20/20118:21:40 20.7 0.2 6.3 In Stack 7/20/20118:22:00 20.4 0.4 3.4 In Stack 7/20/20118:22:20 19.2 1.6 2.0 In Stack 7/20/2011 8:22:40 19.1 1.6 3.8 In Stack 7/20/2011 8:23:00 19.1 1.6 5.9 In Stack 7/20/2011 8:23:20 19.2 1.6 6.5 In Stack 7/20/2011 8:23:40 19.1 1.6 6.8 In Stack 7/20/2011 8:24:00 19.1 1.6 6.8 In Stack 7/20/2011 8:24:20 19.1 1.6 6.9 In Stack 7/20/2011 8:24:40 19.1 1.6 6.9 In Stack 7/20/2011 8:25:00 19.0 1.6 7.0 In Stack 7/20/20118:25:20 19.0 1.6 6.9 In Stack 7/20/2011 8:25:40 19.1 1.6 6.7 In Stack 7/20/20118:26:00 19.1 1.6 6.6 In Stack 7/20/20118:26:20 19.1 1.6 6.5 In Stack 7/20/20118:26:40 19.0 1.7 6.4 In Stack 7/20/20118:27:00 19.0 1.7 6.2 In Stack 7/20/20118:27:20 19.0 1.7 6.1 In Stack 7/20/2011 8:27:40 19.0 1.7 5.9 In Stack 7/20/2011 8:28:00 19.0 1.7 5.9 In Stack 7/20/20118:28:20 19.0 1.7 5.8 In Stack 7/20/20118:28:40 19.1 1.7 5.6 In Stack 7/20/20118:29:00 19.0 1.7 5.5 In Stack 7/20/20118:29:20 19.0 1.7 5.6 In Stack 7/20/20118:29:40 19.1 1.7 5.6 In Stack 7/20/20118:30:00 19.1 1.7 5.6 In Stack 7/20/20118:30:20 19.1 1.7 5.5 In Stack 7/20/20118:30:40 19.1 1.7 5.4 In Stack 7/20/20118:31:00 19.1 1.7 5.4 In Stack 7/20/2011 8:31:20 19.8 1.0 5.3 In Stack 7/20/20118:31:40 19.6 1.2 4.4 In Stack 7/20/2011 8:32:00 19.0 1.7 3.7 In Stack 7/20/2011 8:32:20 19.1 1.7 4.3 In Stack 7/20/2011 8:32:40 19.0 1.7 5.0 In Stack 7/20/2011 8:33:00 19.0 1.7 5.1 In Stack 7/20/2011 8:33:20 19.0 1.7 5.2 In Stack 7/20/2011 8:33:40 19.0 1.7 5.1 In Stack 7/20/2011 8:34:00 19.0 1.7 5.1 In Stack 7/20/2011 8:34:20 19.0 1.7 5.1 In Stack 7/20/20118:34:40 19.0 1.7 5.1 In Stack 7/20/20118:35:00 19.0 1.7 5.0 Run 1 7/20/20118:35:20 19.0 1.7 5.1 Run 1 7/20/2011 8:35:40 19.0 1.7 5.1 Run 1 7/20/2011 8:36:00 19.0 1.7 5.1 Run 1 7/20/2011 8:36:20 19.0 1.7 5.0 Run 1 7/20/2011 8:36:40 19.0 1.7 4.9 Run 1 7/20/2011 8:37:00 19.0 1.7 4.9 Run 1 7/20/20118:37:20 19.0 1.7 5.0 Run 1 7/20/2011 8:37:40 19.0 1.7 5.2 Run 1 7/20/20118:38:00 19.0 1.7 5.2 Run 1 7/20/20118:38:20 19.0 1.7 5.3 Run 1 7/20/2011 8:38:40 19.0 1.7 5.5 Run 1 7/20/2011 8:39:00 19.0 1.7 5.8 Run 1 7/20/2011 8:39:20 19.0 1.7 5.9 Run 1 7/20/2011 8:39:40 19.0 1.7 5.9 Run 1

Page 3of 17 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/20/20118:20:00 19.1 1.6 7.8 In Stack 7/20/20118:20:20 19.1 1.6 7.8 In Stack 7/20/20118:20:40 19.1 1.6 7.8 In Stack 7/20/20118:21:00 19.1 1.6 7.7 In Stack 7/20/20118:21:20 19.6 1.2 7.6 In Stack 7/20/20118:21:40 20.7 0.2 6.3 In Stack 7/20/20118:22:00 20.4 0.4 3.4 In Stack 7/20/20118:22:20 19.2 1.6 2.0 In Stack 7/20/2011 8:22:40 19.1 1.6 3.8 In Stack 7/20/2011 8:23:00 19.1 1.6 5.9 In Stack 7/20/2011 8:23:20 19.2 1.6 6.5 In Stack 7/20/2011 8:23:40 19.1 1.6 6.8 In Stack 7/20/2011 8:24:00 19.1 1.6 6.8 In Stack 7/20/2011 8:24:20 19.1 1.6 6.9 In Stack 7/20/2011 8:24:40 19.1 1.6 6.9 In Stack 7/20/2011 8:25:00 19.0 1.6 7.0 In Stack 7/20/20118:25:20 19.0 1.6 6.9 In Stack 7/20/2011 8:25:40 19.1 1.6 6.7 In Stack 7/20/20118:26:00 19.1 1.6 6.6 In Stack 7/20/20118:26:20 19.1 1.6 6.5 In Stack 7/20/20118:26:40 19.0 1.7 6.4 In Stack 7/20/20118:27:00 19.0 1.7 6.2 In Stack 7/20/20118:27:20 19.0 1.7 6.1 In Stack 7/20/2011 8:27:40 19.0 1.7 5.9 In Stack 7/20/2011 8:28:00 19.0 1.7 5.9 In Stack 7/20/20118:28:20 19.0 1.7 5.8 In Stack 7/20/20118:28:40 19.1 1.7 5.6 In Stack 7/20/20118:29:00 19.0 1.7 5.5 In Stack 7/20/20118:29:20 19.0 1.7 5.6 In Stack 7/20/20118:29:40 19.1 1.7 5.6 In Stack 7/20/20118:30:00 19.1 1.7 5.6 In Stack 7/20/20118:30:20 19.1 1.7 5.5 In Stack 7/20/20118:30:40 19.1 1.7 5.4 In Stack 7/20/20118:31:00 19.1 1.7 5.4 In Stack 7/20/2011 8:31:20 19.8 1.0 5.3 In Stack 7/20/20118:31:40 19.6 1.2 4.4 In Stack 7/20/2011 8:32:00 19.0 1.7 3.7 In Stack 7/20/2011 8:32:20 19.1 1.7 4.3 In Stack 7/20/2011 8:32:40 19.0 1.7 5.0 In Stack 7/20/2011 8:33:00 19.0 1.7 5.1 In Stack 7/20/2011 8:33:20 19.0 1.7 5.2 In Stack 7/20/2011 8:33:40 19.0 1.7 5.1 In Stack 7/20/2011 8:34:00 19.0 1.7 5.1 In Stack 7/20/2011 8:34:20 19.0 1.7 5.1 In Stack 7/20/20118:34:40 19.0 1.7 5.1 In Stack 7/20/20118:35:00 19.0 1.7 5.0 Run 1 7/20/20118:35:20 19.0 1.7 5.1 Run 1 7/20/2011 8:35:40 19.0 1.7 5.1 Run 1 7/20/2011 8:36:00 19.0 1.7 5.1 Run 1 7/20/2011 8:36:20 19.0 1.7 5.0 Run 1 7/20/2011 8:36:40 19.0 1.7 4.9 Run 1 7/20/2011 8:37:00 19.0 1.7 4.9 Run 1 7/20/20118:37:20 19.0 1.7 5.0 Run 1 7/20/2011 8:37:40 19.0 1.7 5.2 Run 1 7/20/20118:38:00 19.0 1.7 5.2 Run 1 7/20/20118:38:20 19.0 1.7 5.3 Run 1 7/20/2011 8:38:40 19.0 1.7 5.5 Run 1 7/20/2011 8:39:00 19.0 1.7 5.8 Run 1 7/20/2011 8:39:20 19.0 1.7 5.9 Run 1 7/20/2011 8:39:40 19.0 1.7 5.9 Run 1

Page 3of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine TestDate 7/20/11 11/30/2011 Virginia. Minnesota FurnaceStack B



### TIMESTAMP O2

### .% CO2 •% 

### S02. ppm 

### Notes 7/20/20118:40:00 19.0 1.7 6.0 Run 1 7/20/20118:40:20 19.0 1.7 6.1 Run 1 7/20/20118:40:40 19.0 1.7 6.1 Run 1 7/20/20118:41:00 19.0 1.8 6.0 Run 1 7/20/20118:41:20 19.0 1.8 5.8 Run 1 7/20/20118:41:40 19.0 1.7 5.5 Run 1 7/20/2011 8:42:00 19.0 1.8 5.3 Run 1 7/20/20118:42:20 19.0 1.7 5.2 Run 1 7/20/2011 8:42:40 19.0 1.7 5.3 Run 1 7/20/20118:43:00 19.0 1.8 5.3 Run 1 7/20/20118:43:20 19.0 1.8 5.3 Run 1 7/20/20118:43:40 19.0 1.8 5.2 Run 1 7/20/2011 8:44:00 19.0 1.8 5.1 Run 1 7/20/2011 8:44:20 19.0 1.8 5.2 Run 1 7/20/20118:44:40 19.0 1.8 5.2 Run 1 7/20/20118:45:00 19.0 1.8 5.2 Run 1 7/20/20118:45:20 19.0 1.8 5.3 Run 1 7/20/20118:45:40 19.0 1.8 5.3 Run 1 7/20/20118:46:00 19.0 1.7 5.3 Run 1 7/20/20118:46:20 19.0 1.7 5.4 Run 1 7/20/20118:46:40 19.0 1.7 5.4 Run 1 7/20/20118:47:00 19.0 1.8 5.5 Run 1 7/20/20118:47:20 19.0 1.8 5.5 Run 1 7/20/20118:47:40 19.0 1.8 5.5 Run 1 7/20/20118:48:00 19.0 1.8 5.3 Run 1 7/20/20118:48:20 19.0 1.8 5.2 Run 1 7/20/2011 8:48:40 19.0 1.8 5.1 Run 1 7/20/2011 8:49:00 19.0 1.7 5.0 Run 1 7/20/2011 8:49:20 19.0 1.7 5.1 Run 1 7/20/20118:49:40 19.0 1.7 5.1 Run 1 7/20/20118:50:00 19.0 1.7 5.1 Run 1 7/20/20118:50:20 19.0 1.7 5.2 Run 1 7/20/20118:50:40 19.0 1.7 5.2 Run 1 7/20/20118:51:00 19.0 1.7 5.1 Run 1 7/20/20118:51:20 19.0 1.7 5.2 Run 1 7/20/20118:51:40 19.0 1.7 5.3 Run 1 7/20/20118:52:00 19.0 1.7 5.3 Run 1 7/20/20118:52:20 19.0 1.7 5.3 Run 1 7/20/20118:52:40 19.0 1.7 5.3 Run 1 7/20/20118:53:00 19.0 1.7 5.3 Run 1 7/20/2011 8:53:20 19.0 1.7 5.3 Run 1 7/20/2011 8:53:40 19.0 1.7 5.4 Run 1 7/20/2011 8:54:00 19.0 1.7 5.4 Run 1 7/20/2011 8:54:20 19.0 1.7 5.4 Run 1 7/20/2011 8:54:40 19.0 1.7 5.5 Run 1 7/20/2011 8:55:00 19.0 1.7 5.6 Run 1 7/20/2011 8:55:20 19.0 1.7 5.7 Run 1 7/20/2011 8:55:40 19.0 1.7 5.6 Run 1 7/20/2011 8:56:00 19.0 1.8 5.4 Run 1 7/20/2011 8:56:20 19.0 1.8 5.3 Run 1 7/20/20118:56:40 19.0 1.8 5.3 Run 1 7/20/20118:57:00 19.0 1.8 5.3 Run 1 7/20/20118:57:20 19.0 1.8 5.2 Run 1 7/20/2011 8:57:40 19.0 1.8 5.0 Run 1 7/20/2011 8:58:00 19.0 1.8 4.8 Run 1 7/20/20118:58:20 18.9 1.8 4.7 Run 1 7/20/20118:58:40 18.9 1.8 4.6 Run 1 7/20/20118:59:00 18.9 1.8 4.6 Run 1 7/20/20118:59:20 18.9 1.8 4.7 Run 1 7/20/20118:59:40 18.9 1.8 4.7 Run 1

Page40f 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine TestDate 7/20/11 11/30/2011 Virginia. Minnesota FurnaceStack B



### TIMESTAMP O2

### .% CO2 •% 

### S02. ppm 

### Notes 7/20/20118:40:00 19.0 1.7 6.0 Run 1 7/20/20118:40:20 19.0 1.7 6.1 Run 1 7/20/20118:40:40 19.0 1.7 6.1 Run 1 7/20/20118:41:00 19.0 1.8 6.0 Run 1 7/20/20118:41:20 19.0 1.8 5.8 Run 1 7/20/20118:41:40 19.0 1.7 5.5 Run 1 7/20/2011 8:42:00 19.0 1.8 5.3 Run 1 7/20/20118:42:20 19.0 1.7 5.2 Run 1 7/20/2011 8:42:40 19.0 1.7 5.3 Run 1 7/20/20118:43:00 19.0 1.8 5.3 Run 1 7/20/20118:43:20 19.0 1.8 5.3 Run 1 7/20/20118:43:40 19.0 1.8 5.2 Run 1 7/20/2011 8:44:00 19.0 1.8 5.1 Run 1 7/20/2011 8:44:20 19.0 1.8 5.2 Run 1 7/20/20118:44:40 19.0 1.8 5.2 Run 1 7/20/20118:45:00 19.0 1.8 5.2 Run 1 7/20/20118:45:20 19.0 1.8 5.3 Run 1 7/20/20118:45:40 19.0 1.8 5.3 Run 1 7/20/20118:46:00 19.0 1.7 5.3 Run 1 7/20/20118:46:20 19.0 1.7 5.4 Run 1 7/20/20118:46:40 19.0 1.7 5.4 Run 1 7/20/20118:47:00 19.0 1.8 5.5 Run 1 7/20/20118:47:20 19.0 1.8 5.5 Run 1 7/20/20118:47:40 19.0 1.8 5.5 Run 1 7/20/20118:48:00 19.0 1.8 5.3 Run 1 7/20/20118:48:20 19.0 1.8 5.2 Run 1 7/20/2011 8:48:40 19.0 1.8 5.1 Run 1 7/20/2011 8:49:00 19.0 1.7 5.0 Run 1 7/20/2011 8:49:20 19.0 1.7 5.1 Run 1 7/20/20118:49:40 19.0 1.7 5.1 Run 1 7/20/20118:50:00 19.0 1.7 5.1 Run 1 7/20/20118:50:20 19.0 1.7 5.2 Run 1 7/20/20118:50:40 19.0 1.7 5.2 Run 1 7/20/20118:51:00 19.0 1.7 5.1 Run 1 7/20/20118:51:20 19.0 1.7 5.2 Run 1 7/20/20118:51:40 19.0 1.7 5.3 Run 1 7/20/20118:52:00 19.0 1.7 5.3 Run 1 7/20/20118:52:20 19.0 1.7 5.3 Run 1 7/20/20118:52:40 19.0 1.7 5.3 Run 1 7/20/20118:53:00 19.0 1.7 5.3 Run 1 7/20/2011 8:53:20 19.0 1.7 5.3 Run 1 7/20/2011 8:53:40 19.0 1.7 5.4 Run 1 7/20/2011 8:54:00 19.0 1.7 5.4 Run 1 7/20/2011 8:54:20 19.0 1.7 5.4 Run 1 7/20/2011 8:54:40 19.0 1.7 5.5 Run 1 7/20/2011 8:55:00 19.0 1.7 5.6 Run 1 7/20/2011 8:55:20 19.0 1.7 5.7 Run 1 7/20/2011 8:55:40 19.0 1.7 5.6 Run 1 7/20/2011 8:56:00 19.0 1.8 5.4 Run 1 7/20/2011 8:56:20 19.0 1.8 5.3 Run 1 7/20/20118:56:40 19.0 1.8 5.3 Run 1 7/20/20118:57:00 19.0 1.8 5.3 Run 1 7/20/20118:57:20 19.0 1.8 5.2 Run 1 7/20/2011 8:57:40 19.0 1.8 5.0 Run 1 7/20/2011 8:58:00 19.0 1.8 4.8 Run 1 7/20/20118:58:20 18.9 1.8 4.7 Run 1 7/20/20118:58:40 18.9 1.8 4.6 Run 1 7/20/20118:59:00 18.9 1.8 4.6 Run 1 7/20/20118:59:20 18.9 1.8 4.7 Run 1 7/20/20118:59:40 18.9 1.8 4.7 Run 1

Page40f 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### .% CO2•

### % 

### 502• ppm Notes 7/20/20119:00:00 18.9 1.8 4.8 Run 1 7/20/20119:00:20 18.9 1.8 4.9 Run 1 7/20/20119:00:40 18.9 1.8 5.0 Run 1 7/20/20119:01:00 18.9 1.8 5.3 Run 1 7/20/20119:01:20 18.9 1.8 5.4 Run 1 7/20/20119:01:40 18.9 1.8 5.5 Run 1 7/20/20119:02:00 18.9 1.8 5.6 Run 1 7/20/20119:02:20 18.9 1.8 5.7 Run 1 7/20/20119:02:40 18.9 1.8 5.7 Run 1 7/20/20119:03:00 18.9 1.8 5.7 Run 1 7/20/20119:03:20 18.9 1.8 5.8 Run 1 7/20/20119:03:40 19.0 1.8 5.7 Run 1 7/20/20119:04:00 18.9 1.8 5.6 Run 1 7/20/20119:04:20 18.9 1.8 5.7 Run 1 7/20/20119:04:40 18.9 1.8 5.7 Run 1 7/20/20119:05:00 18.9 1.8 5.9 Run 1 7/20/20119:05:20 19.0 1.8 6.0 Run 1 7/20/20119:05:40 18.9 1.8 6.1 Run 1 7/20/20119:06:00 18.9 1.8 6.3 Run 1 7/20/20119:06:20 18.9 1.8 6.5 Run 1 7/20/20119:06:40 18.9 1.8 6.7 Run 1 7/20/20119:07:00 18.9 1.8 6.8 Run 1 7/20/20119:07:20 18.9 1.8 6.8 Run 1 7/20/20119:07:40 18.9 1.8 6.8 Run 1 7/20/20119:08:00 18.9 1.8 6.9 Run 1 7/20/20119:08:20 18.9 1.8 7.0 Run 1 7/20/20119:08:40 18.9 1.8 7.1 Run 1 7/20/20119:09:00 18.9 1.8 7.1 Run 1 7/20/20119:09:20 18.9 1.8 7.1 Run 1 7/20/20119:09:40 18.9 1.8 7.2 Run 1 7/20/20119:10:00 18.9 1.8 7.2 Run 1 7/20/20119:10:20 18.9 1.7 7.3 Run 1 7/20/20119:10:40 18.9 1.7 7.5 Run 1 7/20/20119:11:00 18.9 1.7 7.6 Run 1 7/20/20119:11:20 18.9 1.7 7.6 Run 1 7/20/20119:11:40 18.9 1.7 7.7 Run 1 7/20/20119:12:00 18.9 1.7 7.8 Run 1 7/20/20119:12:20 18.9 1.7 7.8 Run 1 7/20/20119:12:40 18.9 1.8 7.7 Run 1 7/20/20119:13:00 18.9 1.8 7.7 Run 1 7/20/20119:13:20 18.9 1.8 7.7 Run 1 7/20/20119:13:40 18.9 1.8 7.6 Run 1 7/20/20119:14:00 18.9 1.7 7.5 Run 1 7/20/20119:14:20 18.9 1.8 7.4 Run 1 7/20/20119:14:40 18.9 1.8 7.5 Run 1 7/20/20119:15:00 18.9 1.8 7.6 Run 1 7/20/20119:15:20 18.9 1.8 7.7 Run 1 7/20/20119:15:40 18.9 1.8 7.8 Run 1 7/20/20119:16:00 18.9 1.8 7.7 Run 1 7/20/20119:16:20 18.9 1.8 7.5 Run 1 7/20/20119:16:40 18.9 1.8 7.4 Run 1 7/20/20119:17:00 18.9 1.8 7.3 Run 1 7/20/20119:17:20 18.9 1.8 7.3 Run 1 7/20/20119:17:40 18.9 1.8 7.2 Run 1 7/20/20119:18:00 18.9 1.8 7.3 Run 1 7/20/20119:18:20 18.9 1.8 7.3 Run 1 7/20/20119:18:40 18.9 1.8 7.4 Run 1 7/20/20119:19:00 18.9 1.8 7.3 Run 1 7/20/20119:19:20 18.9 1.8 7.4 Run 1 7/20/20119:19:40 18.9 1.8 7.4 Run 1

Page 5 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### .% CO2•

### % 

### 502• ppm Notes 7/20/20119:00:00 18.9 1.8 4.8 Run 1 7/20/20119:00:20 18.9 1.8 4.9 Run 1 7/20/20119:00:40 18.9 1.8 5.0 Run 1 7/20/20119:01:00 18.9 1.8 5.3 Run 1 7/20/20119:01:20 18.9 1.8 5.4 Run 1 7/20/20119:01:40 18.9 1.8 5.5 Run 1 7/20/20119:02:00 18.9 1.8 5.6 Run 1 7/20/20119:02:20 18.9 1.8 5.7 Run 1 7/20/20119:02:40 18.9 1.8 5.7 Run 1 7/20/20119:03:00 18.9 1.8 5.7 Run 1 7/20/20119:03:20 18.9 1.8 5.8 Run 1 7/20/20119:03:40 19.0 1.8 5.7 Run 1 7/20/20119:04:00 18.9 1.8 5.6 Run 1 7/20/20119:04:20 18.9 1.8 5.7 Run 1 7/20/20119:04:40 18.9 1.8 5.7 Run 1 7/20/20119:05:00 18.9 1.8 5.9 Run 1 7/20/20119:05:20 19.0 1.8 6.0 Run 1 7/20/20119:05:40 18.9 1.8 6.1 Run 1 7/20/20119:06:00 18.9 1.8 6.3 Run 1 7/20/20119:06:20 18.9 1.8 6.5 Run 1 7/20/20119:06:40 18.9 1.8 6.7 Run 1 7/20/20119:07:00 18.9 1.8 6.8 Run 1 7/20/20119:07:20 18.9 1.8 6.8 Run 1 7/20/20119:07:40 18.9 1.8 6.8 Run 1 7/20/20119:08:00 18.9 1.8 6.9 Run 1 7/20/20119:08:20 18.9 1.8 7.0 Run 1 7/20/20119:08:40 18.9 1.8 7.1 Run 1 7/20/20119:09:00 18.9 1.8 7.1 Run 1 7/20/20119:09:20 18.9 1.8 7.1 Run 1 7/20/20119:09:40 18.9 1.8 7.2 Run 1 7/20/20119:10:00 18.9 1.8 7.2 Run 1 7/20/20119:10:20 18.9 1.7 7.3 Run 1 7/20/20119:10:40 18.9 1.7 7.5 Run 1 7/20/20119:11:00 18.9 1.7 7.6 Run 1 7/20/20119:11:20 18.9 1.7 7.6 Run 1 7/20/20119:11:40 18.9 1.7 7.7 Run 1 7/20/20119:12:00 18.9 1.7 7.8 Run 1 7/20/20119:12:20 18.9 1.7 7.8 Run 1 7/20/20119:12:40 18.9 1.8 7.7 Run 1 7/20/20119:13:00 18.9 1.8 7.7 Run 1 7/20/20119:13:20 18.9 1.8 7.7 Run 1 7/20/20119:13:40 18.9 1.8 7.6 Run 1 7/20/20119:14:00 18.9 1.7 7.5 Run 1 7/20/20119:14:20 18.9 1.8 7.4 Run 1 7/20/20119:14:40 18.9 1.8 7.5 Run 1 7/20/20119:15:00 18.9 1.8 7.6 Run 1 7/20/20119:15:20 18.9 1.8 7.7 Run 1 7/20/20119:15:40 18.9 1.8 7.8 Run 1 7/20/20119:16:00 18.9 1.8 7.7 Run 1 7/20/20119:16:20 18.9 1.8 7.5 Run 1 7/20/20119:16:40 18.9 1.8 7.4 Run 1 7/20/20119:17:00 18.9 1.8 7.3 Run 1 7/20/20119:17:20 18.9 1.8 7.3 Run 1 7/20/20119:17:40 18.9 1.8 7.2 Run 1 7/20/20119:18:00 18.9 1.8 7.3 Run 1 7/20/20119:18:20 18.9 1.8 7.3 Run 1 7/20/20119:18:40 18.9 1.8 7.4 Run 1 7/20/20119:19:00 18.9 1.8 7.3 Run 1 7/20/20119:19:20 18.9 1.8 7.4 Run 1 7/20/20119:19:40 18.9 1.8 7.4 Run 1

Page 5 of 17ArceJorMittaJ Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/20119:20:00 18.9 1.8 7.5 Run 1 7/20/20119:20:20 18.9 1.8 7.5 Run 1 7/20/20119:20:40 18.9 1.8 7.5 Run 1 7/20/20119:21:00 18.9 1.8 7.5 Run 1 7/20/20119:21:20 18.9 1.8 7.6 Run 1 7/20/20119:21:40 18.9 1.8 7.6 Run 1 7/20/20119:22:00 18.9 1.8 7.6 Run 1 7/20/20119:22:20 18.9 1.8 7.6 Run 1 7/20/20119:22:40 18.9 1.8 7.6 Run 1 7/20/20119:23:00 18.9 1.8 7.6 Run 1 7/20/20119:23:20 18.9 1.8 7.6 Run 1 7/20/20119:23:40 18.9 1.8 7.6 Run 1 7/20/20119:24:00 18.9 1.8 7.5 Run 1 7/20/20119:24:20 18.9 1.8 7.5 Run 1 7/20/20119:24:40 18.9 1.8 7.6 Run 1 7/20/20119:25:00 18.9 1.8 7.6 Run 1 7/20/20119:25:20 18.9 1.8 7.6 Run 1 7/20/20119:25:40 18.9 1.8 7.6 Run 1 7/20/20119:26:00 18.9 1.8 7.6 Run 1 7/20/20119:26:20 18.9 1.8 7.7 Run 1 7/20/20119:26:40 18.9 1.8 7.8 Run 1 7/20/20119:27:00 18.9 1.8 7.8 Run 1 7/20/20119:27:20 18.9 1.8 7.8 Run 1 7/20/20119:27:40 18.9 1.8 7.9 Run 1 7/20/20119:28:00 18.9 1.7 8.1 Run 1 7/20/20119:28:20 18.9 1.8 8.1 Run 1 7/20/20119:28:40 18.9 1.7 8.0 Run 1 7/20/20119:29:00 18.9 1.8 7.9 Run 1 7/20/20119:29:20 18.9 1.8 8.0 Run 1 7/20/20119:29:40 18.9 1.8 7.8 Run 1 7/20/20119:30:00 18.9 1.8 7.6 Run 1 7/20/20119:30:20 18.9 1.8 7.5 Run 1 7/20/20119:30:40 18.9 1.8 7.3 Run 1 7/20/20119:31:00 18.9 1.7 7.2 Run 1 7/20/20119:31:20 18.9 1.7 7.2 Run 1 7/20/20119:31:40 18.9 1.7 7.2 Run 1 7/20/20119:32:00 18.9 1.7 7.1 Run 1 7/20/20119:32:20 18.9 1.7 7.1 Run 1 7/20/20119:32:40 18.9 1.7 7.1 Run 1 7/20/20119:33:00 19.0 1.7 7.0 Run 1 7/20/20119:33:20 19.0 1.7 6.9 Run 1 7/20/20119:33:40 18.9 1.7 6.7 Run 1 7/20/20119:34:00 18.9 1.7 6.7 Run 1 7/20/20119:34:20 18.9 1.7 6.7 Run 1 7/20/20119:34:40 18.9 1.7 6.6 Run 1 7/20/20119:35:00 18.9 1.7 6.4 Run 1 7/20/20119:35:20 18.9 1.7 6.3 Run 1 7/20/20119:35:40 18.9 1.8 6.2 Run 1 7/20/20119:36:00 18.9 1.7 6.1 Run 1 7/20/20119:36:20 18.9 1.7 6.0 Run 1 7/20/20119:36:40 18.9 1.7 5.9 Run 1 7/20/20119:37:00 18.9 1.7 5.9 Run 1 7/20/20119:37:20 18.9 1.7 5.9 Run 1 7/20/20119:37:40 18.9 1.7 5.8 Run 1 7/20/20119:38:00 18.9 1.7 5.7 Run 1 7/20/20119:38:20 18.9 1.7 5.6 Run 1 7/20/20119:38:40 18.9 1.7 5.6 Run 1 7/20/20119:39:00 18.9 1.7 5.5 Run 1 7/20/20119:39:20 18.9 1.7 5.4 Run 1 7/20/20119:39:40 18.9 1.7 5.5 Run 1

Page6 of 17 ArceJorMittaJ Data LoggerOutput BarrEngineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/20119:20:00 18.9 1.8 7.5 Run 1 7/20/20119:20:20 18.9 1.8 7.5 Run 1 7/20/20119:20:40 18.9 1.8 7.5 Run 1 7/20/20119:21:00 18.9 1.8 7.5 Run 1 7/20/20119:21:20 18.9 1.8 7.6 Run 1 7/20/20119:21:40 18.9 1.8 7.6 Run 1 7/20/20119:22:00 18.9 1.8 7.6 Run 1 7/20/20119:22:20 18.9 1.8 7.6 Run 1 7/20/20119:22:40 18.9 1.8 7.6 Run 1 7/20/20119:23:00 18.9 1.8 7.6 Run 1 7/20/20119:23:20 18.9 1.8 7.6 Run 1 7/20/20119:23:40 18.9 1.8 7.6 Run 1 7/20/20119:24:00 18.9 1.8 7.5 Run 1 7/20/20119:24:20 18.9 1.8 7.5 Run 1 7/20/20119:24:40 18.9 1.8 7.6 Run 1 7/20/20119:25:00 18.9 1.8 7.6 Run 1 7/20/20119:25:20 18.9 1.8 7.6 Run 1 7/20/20119:25:40 18.9 1.8 7.6 Run 1 7/20/20119:26:00 18.9 1.8 7.6 Run 1 7/20/20119:26:20 18.9 1.8 7.7 Run 1 7/20/20119:26:40 18.9 1.8 7.8 Run 1 7/20/20119:27:00 18.9 1.8 7.8 Run 1 7/20/20119:27:20 18.9 1.8 7.8 Run 1 7/20/20119:27:40 18.9 1.8 7.9 Run 1 7/20/20119:28:00 18.9 1.7 8.1 Run 1 7/20/20119:28:20 18.9 1.8 8.1 Run 1 7/20/20119:28:40 18.9 1.7 8.0 Run 1 7/20/20119:29:00 18.9 1.8 7.9 Run 1 7/20/20119:29:20 18.9 1.8 8.0 Run 1 7/20/20119:29:40 18.9 1.8 7.8 Run 1 7/20/20119:30:00 18.9 1.8 7.6 Run 1 7/20/20119:30:20 18.9 1.8 7.5 Run 1 7/20/20119:30:40 18.9 1.8 7.3 Run 1 7/20/20119:31:00 18.9 1.7 7.2 Run 1 7/20/20119:31:20 18.9 1.7 7.2 Run 1 7/20/20119:31:40 18.9 1.7 7.2 Run 1 7/20/20119:32:00 18.9 1.7 7.1 Run 1 7/20/20119:32:20 18.9 1.7 7.1 Run 1 7/20/20119:32:40 18.9 1.7 7.1 Run 1 7/20/20119:33:00 19.0 1.7 7.0 Run 1 7/20/20119:33:20 19.0 1.7 6.9 Run 1 7/20/20119:33:40 18.9 1.7 6.7 Run 1 7/20/20119:34:00 18.9 1.7 6.7 Run 1 7/20/20119:34:20 18.9 1.7 6.7 Run 1 7/20/20119:34:40 18.9 1.7 6.6 Run 1 7/20/20119:35:00 18.9 1.7 6.4 Run 1 7/20/20119:35:20 18.9 1.7 6.3 Run 1 7/20/20119:35:40 18.9 1.8 6.2 Run 1 7/20/20119:36:00 18.9 1.7 6.1 Run 1 7/20/20119:36:20 18.9 1.7 6.0 Run 1 7/20/20119:36:40 18.9 1.7 5.9 Run 1 7/20/20119:37:00 18.9 1.7 5.9 Run 1 7/20/20119:37:20 18.9 1.7 5.9 Run 1 7/20/20119:37:40 18.9 1.7 5.8 Run 1 7/20/20119:38:00 18.9 1.7 5.7 Run 1 7/20/20119:38:20 18.9 1.7 5.6 Run 1 7/20/20119:38:40 18.9 1.7 5.6 Run 1 7/20/20119:39:00 18.9 1.7 5.5 Run 1 7/20/20119:39:20 18.9 1.7 5.4 Run 1 7/20/20119:39:40 18.9 1.7 5.5 Run 1

Page6 of 17

### ArcelorMiltal Data LoggerOutput BarrEngineering Minorca Mine TestDate 7/20/11 11/30/2011 

### Virginia. Minnesota FumaceStack B

TIMESTAMP °2.% 

### CO2 • % S02. 

### ppm Notes 7/20/20119:40:00 18.9 1.7 

### 5.5 Run 1 

### 7/20/20119:40:20 18.9 1.7 5.5 Run 1 

### 7/20/20119:40:40 18.9 1.7 

### 5.5 Run 1 

### 7/20/20119:41:00 19.0 1.7 

### 5.4 Run 1 

### 7/20/20119:41:20 18.9 1.8 5.3 Run 1 

### 7/20/20119:41:40 18.9 1.8 5.3 Run 1 

### 7/20/20119:42:00 18.9 1.8 5.1 Run 1 

### 7/20/20119:42:20 18.9 1.8 4.9 Run 1 

### 7/20/20119:42:40 18.9 1.8 4.9 Run 1 

### 7/20/20119:43:00 18.9 1.8 4.9 7/20/20119:43:20 18.9 1.8 4.9 7/20/20119:43:40 18.9 1.8 5.0 7/20/20119:44:00 18.9 1.8 5.0 7/20/20119:44:20 18.9 1.8 5.0 7/20/20119:44:40 18.9 1.8 5.0 7/20/20119:45:00 18.9 1.8 4.8 7/20/20119:45:20 18.9 1.8 4.7 7/20/20119:45:40 18.9 1.8 4.6 7/20/20119:46:00 18.9 1.8 4.6 7/20/20119:46:00 18.9 1.8 4.6 7/20/20119:46:20 18.9 1.8 4.7 7/20/20119:46:40 18.9 1.8 4.7 7/20/20119:47:00 18.9 1.8 4.7 7/20/20119:47:20 18.9 1.8 4.7 7/20/20119:47:40 18.9 1.8 4.7 7/20/20119:48:00 19.0 1.8 4.6 7/20/20119:48:20 19.0 1.8 4.6 7/20/20119:48:40 19.0 1.8 4.6 7/20/20119:49:00 19.0 1.7 4.7 7/20/20119:49:20 19.0 1.7 4.8 7/20/20119:49:40 19.0 1.7 5.0 7/20/20119:50:00 19.0 1.7 5.2 7/20/20119:50:20 19.0 1.7 5.3 7/20/20119:50:40 19.0 1.7 5.4 7/20/20119:51:00 19.0 1.7 5.4 7/20/20119:51:20 19.0 1.7 

### 5.3 7/20/20119:51:40 19.0 1.7 5.4 7/20/20119:52:00 19.0 1.7 5.4 7/20/20119:52:20 19.0 1.7 5.4 7/20/20119:52:40 19.0 1.7 5.4 7/20/20119:53:00 19.0 1.7 5.4 7/20/20119:53:20 19.0 1.7 5.6 7/20/20119:53:40 19.0 1.7 5.8 7/20/20119:54:00 19.0 1.7 5.7 7/20/20119:54:20 19.0 1.7 5.5 7/20/20119:54:40 19.0 1.7 5.5 7/20/20119:55:00 14.9 3.9 5.4 7/20/20119:55:20 0.8 0.6 4.2 Bias Drift Check 7/20/20119:55:40 0.0 0.2 2.2 Bias Drift Check 7/20/20119:56:00 0.0 0.2 1.1 Bias Drift Check 7/20/20119:56:20 0.0 0.2 0.8 Bias Drift Check 7/20/20119:56:40 0.0 0.2 0.9 Bias DriftCheck 7/20/20119:57:00 0.0 0.2 1.0 

### N2 Zero Bias DriftCheck 7/20/20119:57:20 0.0 0.2 0.9 Bias DriftCheck 7/20/20119:57:40 0.0 0.1 1.0 Bias DriftCheck 7/20/20119:58:00 0.0 0.1 1.0 Bias Drift Check 7/20/20119:58:20 0.0 0.1 1.0 Bias Drift Check 7/20/20119:58:40 0.0 0.1 15.1 Bias Drift Check 7/20/20119:59:00 0.0 0.1 23.9 Bias Drift Check 7/20/20119:59:20 0.0 0.1 25.5 BiasDriftCheck

Page7of 17 ArcelorMiltal Data LoggerOutput BarrEngineering Minorca Mine TestDate 7/20/11 11/30/2011 

### Virginia. Minnesota FumaceStack B

TIMESTAMP °2.% 

### CO2 • % S02. 

### ppm Notes 7/20/20119:40:00 18.9 1.7 

### 5.5 Run 1 

### 7/20/20119:40:20 18.9 1.7 5.5 Run 1 

### 7/20/20119:40:40 18.9 1.7 

### 5.5 Run 1 

### 7/20/20119:41:00 19.0 1.7 

### 5.4 Run 1 

### 7/20/20119:41:20 18.9 1.8 5.3 Run 1 

### 7/20/20119:41:40 18.9 1.8 5.3 Run 1 

### 7/20/20119:42:00 18.9 1.8 5.1 Run 1 

### 7/20/20119:42:20 18.9 1.8 4.9 Run 1 

### 7/20/20119:42:40 18.9 1.8 4.9 Run 1 

### 7/20/20119:43:00 18.9 1.8 4.9 7/20/20119:43:20 18.9 1.8 4.9 7/20/20119:43:40 18.9 1.8 5.0 7/20/20119:44:00 18.9 1.8 5.0 7/20/20119:44:20 18.9 1.8 5.0 7/20/20119:44:40 18.9 1.8 5.0 7/20/20119:45:00 18.9 1.8 4.8 7/20/20119:45:20 18.9 1.8 4.7 7/20/20119:45:40 18.9 1.8 4.6 7/20/20119:46:00 18.9 1.8 4.6 7/20/20119:46:00 18.9 1.8 4.6 7/20/20119:46:20 18.9 1.8 4.7 7/20/20119:46:40 18.9 1.8 4.7 7/20/20119:47:00 18.9 1.8 4.7 7/20/20119:47:20 18.9 1.8 4.7 7/20/20119:47:40 18.9 1.8 4.7 7/20/20119:48:00 19.0 1.8 4.6 7/20/20119:48:20 19.0 1.8 4.6 7/20/20119:48:40 19.0 1.8 4.6 7/20/20119:49:00 19.0 1.7 4.7 7/20/20119:49:20 19.0 1.7 4.8 7/20/20119:49:40 19.0 1.7 5.0 7/20/20119:50:00 19.0 1.7 5.2 7/20/20119:50:20 19.0 1.7 5.3 7/20/20119:50:40 19.0 1.7 5.4 7/20/20119:51:00 19.0 1.7 5.4 7/20/20119:51:20 19.0 1.7 

### 5.3 7/20/20119:51:40 19.0 1.7 5.4 7/20/20119:52:00 19.0 1.7 5.4 7/20/20119:52:20 19.0 1.7 5.4 7/20/20119:52:40 19.0 1.7 5.4 7/20/20119:53:00 19.0 1.7 5.4 7/20/20119:53:20 19.0 1.7 5.6 7/20/20119:53:40 19.0 1.7 5.8 7/20/20119:54:00 19.0 1.7 5.7 7/20/20119:54:20 19.0 1.7 5.5 7/20/20119:54:40 19.0 1.7 5.5 7/20/20119:55:00 14.9 3.9 5.4 7/20/20119:55:20 0.8 0.6 4.2 Bias Drift Check 7/20/20119:55:40 0.0 0.2 2.2 Bias Drift Check 7/20/20119:56:00 0.0 0.2 1.1 Bias Drift Check 7/20/20119:56:20 0.0 0.2 0.8 Bias Drift Check 7/20/20119:56:40 0.0 0.2 0.9 Bias DriftCheck 7/20/20119:57:00 0.0 0.2 1.0 

### N2 Zero Bias DriftCheck 7/20/20119:57:20 0.0 0.2 0.9 Bias DriftCheck 7/20/20119:57:40 0.0 0.1 1.0 Bias DriftCheck 7/20/20119:58:00 0.0 0.1 1.0 Bias Drift Check 7/20/20119:58:20 0.0 0.1 1.0 Bias Drift Check 7/20/20119:58:40 0.0 0.1 15.1 Bias Drift Check 7/20/20119:59:00 0.0 0.1 23.9 Bias Drift Check 7/20/20119:59:20 0.0 0.1 25.5 BiasDriftCheck

Page7of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2 •

### % S02. ppm Notes 7/20/20119:59:40 0.0 0.1 25.8 Bias Drift Check 7/20/201110:00:00 0.0 0.1 26.2 S02 27.0 ppm Bias Drift Check 7/20/201110:00:20 0.0 0.1 26.5 Bias Drift Check 7/20/201110:00:40 0.0 0.1 14.0 Bias Drift Check 7/20/201110:01:00 0.0 0.1 5.0 Bias Drift Check 7/20/201110:01:20 0.0 0.1 3.8 Bias DriftCheck 7/20/201110:01:40 0.0 0.1 3.5 Bias DriftCheck 7/20/201110:02:00 0.0 0.1 3.5 Bias DriftCheck 7/20/201110:02:20 0.0 0.1 3.4 Bias DriftCheck 7/20/201110:02:40 0.0 0.1 3.3 Bias Drift Check 7/20/201110:03:00 0.0 0.1 3.2 Bias Drift Check 7/20/201110:03:20 0.0 0.1 3.2 Bias DriftCheck 7/20/201110:03:40 0.0 0.1 3.2 Bias Drift Check 7/20/201110:04:00 0.0 0.1 3.3 Bias DriftCheck 7/20/201110:04:20 0.5 0.6 3.3 Bias Drift Check 7/20/201110:04:40 8.5 8.6 2.8 Bias Drift Check 7/20/201110:05:00 8.8 8.9 1.3 Bias Drift Check 7/20/201110:05:20 8.9 8.9 0.1 Bias Drift Check 7/20/201110:05:40 8.9 8.9 -0.1 Bias Drift Check 7/20/201110:06:00 8.9 9.0 -0.1 02 9.0/C029.0 Bias Drift Check 7/20/201110:06:20 9.0 8.9 -0.1 Bias Drift Check 7/20/201110:06:40 18.1 2.3 5.5 Bias Drift Check 7/20/201110:07:00 19.0 1.8 6.5 In Stack 7/20/201110:07:20 19.0 1.8 6.4 In Stack 7/20/201110:07:40 19.0 1.7 6.0 In Stack 7/20/201110:08:00 19.0 1.7 5.8 In Stack 7/20/201110:08:20 19.0 1.7 5.6 In Stack 7/20/201110:08:40 19.0 1.7 5.6 In Stack 7/20/201110:09:00 19.0 1.7 5.7 In Stack 7/20/201110:09:20 19.0 1.7 5.7 In Stack 7/20/201110:09:40 19.0 1.7 5.7 In Stack 7/20/201110:10:00 19.0 1.7 5.6 In Stack 7/20/201110:10:20 18.9 1.7 5.4 In Stack 7/20/201110:10:40 18.9 1.7 5.3 In Stack 7/20/201110:11:00 18.9 1.7 5.1 In Stack 7/20/201110:11:20 18.9 1.7 5.0 In Stack 7/20/201110:11:40 18.9 1.7 5.0 In Stack 7/20/201110:12:00 18.9 1.7 5.1 In Stack 7/20/201110:12:20 18.9 1.7 5.0 In Stack 7/20/201110:12:40 18.8 1.7 4.7 In Stack 7/20/201110:13:00 18.8 1.7 4.6 In Stack 7/20/201110:13:20 18.8 1.7 4.5 In Stack 7/20/201110:13:40 18.9 1.7 4.6 In Stack 7/20/201110:14:00 18.9 1.7 4.8 In Stack 7/20/201110:14:20 18.9 1.7 5.0 In Stack 7/20/201110:14:40 18.9 1.7 5.1 In Stack 7/20/201110:15:00 18.9 1.7 5.2 Run 2 7/20/201110:15:20 18.9 1.7 5.4 Run 2 7/20/201110:15:40 18.9 1.7 5.7 Run 2 7/20/201110:16:00 18.9 1.7 5.8 Run 2 7/20/201110:16:20 18.9 1.7 5.9 Run 2 7/20/201110:16:40 18.9 1.7 6.0 Run2 7/20/201110:17:00 18.9 1.7 6.0 Run2 7/20/201110:17:20 18.9 1.7 6.0 Run2 7/20/201110:17:40 18.9 1.7 6.1 Run 2 7/20/201110:18:00 18.9 1.7 6.2 Run 2 7/20/201110:18:20 18.9 1.7 6.3 Run 2 7/20/201110:18:40 18.9 1.7 6.3 Run2 7/20/201110:19:00 18.9 1.7 6.2 Run 2 7/20/201110:19:20 18.9 1.7 6.1 Run2

Page 8of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2 •

### % S02. ppm Notes 7/20/20119:59:40 0.0 0.1 25.8 Bias Drift Check 7/20/201110:00:00 0.0 0.1 26.2 S02 27.0 ppm Bias Drift Check 7/20/201110:00:20 0.0 0.1 26.5 Bias Drift Check 7/20/201110:00:40 0.0 0.1 14.0 Bias Drift Check 7/20/201110:01:00 0.0 0.1 5.0 Bias Drift Check 7/20/201110:01:20 0.0 0.1 3.8 Bias DriftCheck 7/20/201110:01:40 0.0 0.1 3.5 Bias DriftCheck 7/20/201110:02:00 0.0 0.1 3.5 Bias DriftCheck 7/20/201110:02:20 0.0 0.1 3.4 Bias DriftCheck 7/20/201110:02:40 0.0 0.1 3.3 Bias Drift Check 7/20/201110:03:00 0.0 0.1 3.2 Bias Drift Check 7/20/201110:03:20 0.0 0.1 3.2 Bias DriftCheck 7/20/201110:03:40 0.0 0.1 3.2 Bias Drift Check 7/20/201110:04:00 0.0 0.1 3.3 Bias DriftCheck 7/20/201110:04:20 0.5 0.6 3.3 Bias Drift Check 7/20/201110:04:40 8.5 8.6 2.8 Bias Drift Check 7/20/201110:05:00 8.8 8.9 1.3 Bias Drift Check 7/20/201110:05:20 8.9 8.9 0.1 Bias Drift Check 7/20/201110:05:40 8.9 8.9 -0.1 Bias Drift Check 7/20/201110:06:00 8.9 9.0 -0.1 02 9.0/C029.0 Bias Drift Check 7/20/201110:06:20 9.0 8.9 -0.1 Bias Drift Check 7/20/201110:06:40 18.1 2.3 5.5 Bias Drift Check 7/20/201110:07:00 19.0 1.8 6.5 In Stack 7/20/201110:07:20 19.0 1.8 6.4 In Stack 7/20/201110:07:40 19.0 1.7 6.0 In Stack 7/20/201110:08:00 19.0 1.7 5.8 In Stack 7/20/201110:08:20 19.0 1.7 5.6 In Stack 7/20/201110:08:40 19.0 1.7 5.6 In Stack 7/20/201110:09:00 19.0 1.7 5.7 In Stack 7/20/201110:09:20 19.0 1.7 5.7 In Stack 7/20/201110:09:40 19.0 1.7 5.7 In Stack 7/20/201110:10:00 19.0 1.7 5.6 In Stack 7/20/201110:10:20 18.9 1.7 5.4 In Stack 7/20/201110:10:40 18.9 1.7 5.3 In Stack 7/20/201110:11:00 18.9 1.7 5.1 In Stack 7/20/201110:11:20 18.9 1.7 5.0 In Stack 7/20/201110:11:40 18.9 1.7 5.0 In Stack 7/20/201110:12:00 18.9 1.7 5.1 In Stack 7/20/201110:12:20 18.9 1.7 5.0 In Stack 7/20/201110:12:40 18.8 1.7 4.7 In Stack 7/20/201110:13:00 18.8 1.7 4.6 In Stack 7/20/201110:13:20 18.8 1.7 4.5 In Stack 7/20/201110:13:40 18.9 1.7 4.6 In Stack 7/20/201110:14:00 18.9 1.7 4.8 In Stack 7/20/201110:14:20 18.9 1.7 5.0 In Stack 7/20/201110:14:40 18.9 1.7 5.1 In Stack 7/20/201110:15:00 18.9 1.7 5.2 Run 2 7/20/201110:15:20 18.9 1.7 5.4 Run 2 7/20/201110:15:40 18.9 1.7 5.7 Run 2 7/20/201110:16:00 18.9 1.7 5.8 Run 2 7/20/201110:16:20 18.9 1.7 5.9 Run 2 7/20/201110:16:40 18.9 1.7 6.0 Run2 7/20/201110:17:00 18.9 1.7 6.0 Run2 7/20/201110:17:20 18.9 1.7 6.0 Run2 7/20/201110:17:40 18.9 1.7 6.1 Run 2 7/20/201110:18:00 18.9 1.7 6.2 Run 2 7/20/201110:18:20 18.9 1.7 6.3 Run 2 7/20/201110:18:40 18.9 1.7 6.3 Run2 7/20/201110:19:00 18.9 1.7 6.2 Run 2 7/20/201110:19:20 18.9 1.7 6.1 Run2

Page 8of 17ArcelorMiltal Data LoggerOutput Barr Engineering Minorca Mine TestDate 7/20/11 11/30/2011 Virginia, Minnesota FurnaceStackB

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/201110:19:40 18.9 1.7 6.0 Run2 7/20/201110:20:00 18.9 1.7 5.9 Run 2 7/20/201110:20:20 18.9 1.7 5.8 Run 2 7/20/201110:20:40 18.9 1.7 5.9 Run2 7/20/201110:21:00 18.9 1.7 5.9 Run 2 7/20/201110:21:20 18.9 1.8 5.8 Run2 7/20/201110:21:40 18.9 1.7 5.8 Run2 7/20/201110:22:00 18.9 1.7 6.0 Run2 7/20/201110:22:20 18.9 1.7 6.0 Run2 7/20/201110:22:40 18.9 1.8 6.0 Run2 7/20/201110:23:00 18.9 1.7 6.0 Run2 7/20/201110:23:20 18.9 1.7 6.2 Run2 7/20/201110:23:40 18.9 1.7 6.3 Run2 7/20/201110:24:00 18.9 1.7 6.4 Run2 7/20/201110:24:20 18.9 1.7 6.5 Run 2 7/20/201110:24:40 18.9 1.7 6.6 Run 2 7/20/201110:25:00 18.9 1.7 6.8 Run 2 7/20/201110:25:20 18.9 1.7 7.0 Run 2 7/20/201110:25:40 18.9 1.7 7.2 Run 2 7/20/201110:26:00 18.9 1.7 7.3 Run2 7/20/201110:26:20 18.9 1.7 7.3 Run 2 7/20/201110:26:40 18.9 1.7 7.2 Run 2 7/20/201110:27:00 18.9 1.7 7.2 Run 2 7/20/201110:27:20 18.9 1.7 7.1 Run2 7/20/201110:27:40 18.9 1.7 7.0 Run2 7/20/201110:28:00 18.9 1.7 6.8 Run2 7/20/201110:28:20 18.9 1.7 6.7 Run2 7/20/201110:28:40 18.9 1.7 6.5 Run2 7/20/201110:29:00 18.9 1.7 6.4 Run2 7/20/201110:29:20 18.9 1.8 6.5 Run2 7/20/201110:29:40 18.9 1.8 6.5 Run2 7/20/201110:30:00 18.9 1.8 6.5 Run2 7/20/201110:30:20 18.9 1.8 6.4 Run 2 7/20/201110:30:40 18.9 1.8 6.3 Run2 7/20/201110:31:00 18.9 1.8 6.3 Run 2 7/20/201110:31:20 18.9 1.8 6.4 Run 2 7/20/201110:31:40 18.9 1.8 6.5 Run 2 7/20/201110:32:00 18.8 1.8 6.5 Run 2 7/20/201110:32:20 18.8 1.8 6.6 Run2 7/20/201110:32:40 18.9 1.8 6.8 Run2 7/20/201110:33:00 18.9 1.7 7.0 Run2 7/20/201110:33:20 18.9 1.7 7.0 Run2 7/20/201110:33:40 18.9 1.7 6.9 Run2 7/20/2011 10:34:00 18.9 1.7 6.9 Run2 7/20/201110:34:20 18.9 1.7 7.1 Run2 7/20/201110:34:40 18.8 1.8 7.3 Run 2 7/20/201110:35:00 18.9 1.7 7.4 Run 2 7/20/201110:35:20 18.9 1.7 7.5 Run 2 7/20/201110:35:40 18.9 1.7 7.7 Run2 7/20/201110:36:00 18.9 1.7 7.7 Run 2 7/20/201110:36:20 18.9 1.7 7.7 Run2 7/20/201110:36:40 18.9 1.7 7.7 Run2 7/20/201110:37:00 18.9 1.7 7.7 Run2 7/20/201110:37:20 18.8 1.8 7.7 Run2 7/20/201110:37:40 18.8 1.8 7.8 Run 2 7/20/201110:38:00 18.8 1.8 7.8 Run 2 7/20/201110:38:20 18.8 1.8 7.7 Run 2 7/20/201110:38:40 18.8 1.8 7.5 Run2 7/20/201110:39:00 18.8 1.8 7.5 Run2 7/20/201110;39:20 18.8 1.8 7.4 Run2

Page9of 17 ArcelorMiltal Data LoggerOutput Barr Engineering Minorca Mine TestDate 7/20/11 11/30/2011 Virginia, Minnesota FurnaceStackB

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/201110:19:40 18.9 1.7 6.0 Run2 7/20/201110:20:00 18.9 1.7 5.9 Run 2 7/20/201110:20:20 18.9 1.7 5.8 Run 2 7/20/201110:20:40 18.9 1.7 5.9 Run2 7/20/201110:21:00 18.9 1.7 5.9 Run 2 7/20/201110:21:20 18.9 1.8 5.8 Run2 7/20/201110:21:40 18.9 1.7 5.8 Run2 7/20/201110:22:00 18.9 1.7 6.0 Run2 7/20/201110:22:20 18.9 1.7 6.0 Run2 7/20/201110:22:40 18.9 1.8 6.0 Run2 7/20/201110:23:00 18.9 1.7 6.0 Run2 7/20/201110:23:20 18.9 1.7 6.2 Run2 7/20/201110:23:40 18.9 1.7 6.3 Run2 7/20/201110:24:00 18.9 1.7 6.4 Run2 7/20/201110:24:20 18.9 1.7 6.5 Run 2 7/20/201110:24:40 18.9 1.7 6.6 Run 2 7/20/201110:25:00 18.9 1.7 6.8 Run 2 7/20/201110:25:20 18.9 1.7 7.0 Run 2 7/20/201110:25:40 18.9 1.7 7.2 Run 2 7/20/201110:26:00 18.9 1.7 7.3 Run2 7/20/201110:26:20 18.9 1.7 7.3 Run 2 7/20/201110:26:40 18.9 1.7 7.2 Run 2 7/20/201110:27:00 18.9 1.7 7.2 Run 2 7/20/201110:27:20 18.9 1.7 7.1 Run2 7/20/201110:27:40 18.9 1.7 7.0 Run2 7/20/201110:28:00 18.9 1.7 6.8 Run2 7/20/201110:28:20 18.9 1.7 6.7 Run2 7/20/201110:28:40 18.9 1.7 6.5 Run2 7/20/201110:29:00 18.9 1.7 6.4 Run2 7/20/201110:29:20 18.9 1.8 6.5 Run2 7/20/201110:29:40 18.9 1.8 6.5 Run2 7/20/201110:30:00 18.9 1.8 6.5 Run2 7/20/201110:30:20 18.9 1.8 6.4 Run 2 7/20/201110:30:40 18.9 1.8 6.3 Run2 7/20/201110:31:00 18.9 1.8 6.3 Run 2 7/20/201110:31:20 18.9 1.8 6.4 Run 2 7/20/201110:31:40 18.9 1.8 6.5 Run 2 7/20/201110:32:00 18.8 1.8 6.5 Run 2 7/20/201110:32:20 18.8 1.8 6.6 Run2 7/20/201110:32:40 18.9 1.8 6.8 Run2 7/20/201110:33:00 18.9 1.7 7.0 Run2 7/20/201110:33:20 18.9 1.7 7.0 Run2 7/20/201110:33:40 18.9 1.7 6.9 Run2 7/20/2011 10:34:00 18.9 1.7 6.9 Run2 7/20/201110:34:20 18.9 1.7 7.1 Run2 7/20/201110:34:40 18.8 1.8 7.3 Run 2 7/20/201110:35:00 18.9 1.7 7.4 Run 2 7/20/201110:35:20 18.9 1.7 7.5 Run 2 7/20/201110:35:40 18.9 1.7 7.7 Run2 7/20/201110:36:00 18.9 1.7 7.7 Run 2 7/20/201110:36:20 18.9 1.7 7.7 Run2 7/20/201110:36:40 18.9 1.7 7.7 Run2 7/20/201110:37:00 18.9 1.7 7.7 Run2 7/20/201110:37:20 18.8 1.8 7.7 Run2 7/20/201110:37:40 18.8 1.8 7.8 Run 2 7/20/201110:38:00 18.8 1.8 7.8 Run 2 7/20/201110:38:20 18.8 1.8 7.7 Run 2 7/20/201110:38:40 18.8 1.8 7.5 Run2 7/20/201110:39:00 18.8 1.8 7.5 Run2 7/20/201110;39:20 18.8 1.8 7.4 Run2

Page9of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Fumace Stack B

TIMESTAMP 

### O2

### .% CO2• 

### % S02. ppm Notes 7/20/201110:39:40 18.8 1.8 7.4 

### Run2 7/20/201110:40:00 18.8 1.8 7.4 

### Run2 7/20/201110:40:20 18.8 1.8 7.5 

### Run 2 7/20/201110:40:40 18.8 1.8 7.6 

### Run 2 7/20/201110:41:00 18.8 1.8 7.6 

### Run 2 7/20/201110:41:20 18.9 1.8 7.6 

### Run2 7/20/201110:41:40 18.8 1.8 7.6 

### Run 2 7/20/201110:42:00 18.8 1.8 7.6 

### Run 2 7/20/201110:42:20 18.9 1.8 7.5 

### Run 2 7/20/201110:42:40 18.9 1.8 7.5 

### Run 2 7/20/201110:43:00 18.9 1.8 7.3 

### Run2 7/20/201110:43:20 18.9 1.8 7.1 

### Run2 7/20/201110:43:40 18.9 1.7 7.1 

### Run2 7/20/201110:44:00 18.9 1.8 7.1 

### Run2 7/20/201110:44:20 18.8 1.8 7.1 

### Run 2 7/20/201110:44:40 18.9 1.8 7.0 

### Run 2 7/20/201110:45:00 18.9 1.8 6.9 

### Run 2 7/20/201110:45:20 18.9 1.7 6.8 

### Run 2 7/20/201110:45:40 18.9 1.7 6.7 

### Run 2 7/20/201110:46:00 18.9 1.7 6.8 

### Run2 7/20/201110:46:20 18.9 1.7 6.8 

### Run2 7/20/201110:46:40 18.9 1.7 6.5 

### Run2 7/20/201110:47:00 18.9 1.7 6.4 

### Run2 7/20/201110:47:20 18.9 1.7 6.5 

### Run 2 7/20/201110:47:40 18.9 1.7 6.5 

### Run 2 7/20/201110:48:00 18.9 1.7 6.4 

### Run 2 7/20/201110:48:20 18.9 1.7 6.3 

### Run 2 7/20/201110:48:40 18.9 1.7 6.4 

### Run2 7/20/201110:49:00 18.9 1.7 6.4 

### Run2 7/20/201110:49:20 18.9 1.7 6.3 

### Run 2 7/20/201110:49:40 18.9 1.7 6.3 

### Run2 7/20/201110:50:00 18.9 1.7 6.2 

### Run 2 7/20/201110:50:20 18.9 1.7 6.0 

### Run 2 7/20/201110:50:40 18.9 1.7 5.9 

### Run 2 7/20/201110:51:00 18.9 1.7 5.9 

### Run 2 7/20/201110:51:20 19.0 1.7 6.0 

### Run2 7/20/201110:51:40 18.9 1.7 5.9 

### Run2 7/20/201110:52:00 18.9 1.7 5.9 

### Run 2 7/20/201110:52:20 18.9 1.7 5.8 

### Run 2 7/20/201110:52:40 18.9 1.7 5.6 

### Run 2 7/20/201110:53:00 18.9 1.7 5.5 

### Run 2 7/20/201110:53:20 19.0 1.7 5.4 

### Run2 7/20/201110:53:40 18.9 1.7 5.3 

### Run2 7/20/201110:54:00 18.9 1.7 5.2 

### Run2 7/20/201110:54:20 19.0 1.7 5.2 

### Run 2 7/20/201110:54:40 19.0 1.7 5.2 

### Run 2 7/20/201110:55:00 19.0 1.7 5.1 

### Run 2 7/20/201110:55:20 19.0 1.7 5.1 

### Run2 7/20/201110:55:40 18.9 1.7 5.1 

### Run2 7/20/201110:56:00 18.9 1.7 5.0 

### Run 2 7/20/201110:56:20 18.9 1.8 4.9 

### Run 2 7/20/201110:56:40 18.9 1.8 4.7 

### Run 2 7/20/201110:57:00 18.9 1.8 4.7 

### Run 2 7/20/201110:57:20 18.9 1.8 4.6 

### Run 2 7/20/201110:57:40 18.9 1.7 4.5 

### Run 2 7/20/201110:58:00 18.9 1.8 4.5 

### Run 2 7/20/201110:58:20 18.9 1.7 4.6 

### Run 2 7/20/201110:58:40 18.9 1.7 4.6 

### Run2 7/20/201110:59:00 18.9 1.8 4.6 

### Run2 7/20/201110:59:20 18.9 1.8 4.6 

### Run2

Page 10 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Fumace Stack B

TIMESTAMP 

### O2

### .% CO2• 

### % S02. ppm Notes 7/20/201110:39:40 18.8 1.8 7.4 

### Run2 7/20/201110:40:00 18.8 1.8 7.4 

### Run2 7/20/201110:40:20 18.8 1.8 7.5 

### Run 2 7/20/201110:40:40 18.8 1.8 7.6 

### Run 2 7/20/201110:41:00 18.8 1.8 7.6 

### Run 2 7/20/201110:41:20 18.9 1.8 7.6 

### Run2 7/20/201110:41:40 18.8 1.8 7.6 

### Run 2 7/20/201110:42:00 18.8 1.8 7.6 

### Run 2 7/20/201110:42:20 18.9 1.8 7.5 

### Run 2 7/20/201110:42:40 18.9 1.8 7.5 

### Run 2 7/20/201110:43:00 18.9 1.8 7.3 

### Run2 7/20/201110:43:20 18.9 1.8 7.1 

### Run2 7/20/201110:43:40 18.9 1.7 7.1 

### Run2 7/20/201110:44:00 18.9 1.8 7.1 

### Run2 7/20/201110:44:20 18.8 1.8 7.1 

### Run 2 7/20/201110:44:40 18.9 1.8 7.0 

### Run 2 7/20/201110:45:00 18.9 1.8 6.9 

### Run 2 7/20/201110:45:20 18.9 1.7 6.8 

### Run 2 7/20/201110:45:40 18.9 1.7 6.7 

### Run 2 7/20/201110:46:00 18.9 1.7 6.8 

### Run2 7/20/201110:46:20 18.9 1.7 6.8 

### Run2 7/20/201110:46:40 18.9 1.7 6.5 

### Run2 7/20/201110:47:00 18.9 1.7 6.4 

### Run2 7/20/201110:47:20 18.9 1.7 6.5 

### Run 2 7/20/201110:47:40 18.9 1.7 6.5 

### Run 2 7/20/201110:48:00 18.9 1.7 6.4 

### Run 2 7/20/201110:48:20 18.9 1.7 6.3 

### Run 2 7/20/201110:48:40 18.9 1.7 6.4 

### Run2 7/20/201110:49:00 18.9 1.7 6.4 

### Run2 7/20/201110:49:20 18.9 1.7 6.3 

### Run 2 7/20/201110:49:40 18.9 1.7 6.3 

### Run2 7/20/201110:50:00 18.9 1.7 6.2 

### Run 2 7/20/201110:50:20 18.9 1.7 6.0 

### Run 2 7/20/201110:50:40 18.9 1.7 5.9 

### Run 2 7/20/201110:51:00 18.9 1.7 5.9 

### Run 2 7/20/201110:51:20 19.0 1.7 6.0 

### Run2 7/20/201110:51:40 18.9 1.7 5.9 

### Run2 7/20/201110:52:00 18.9 1.7 5.9 

### Run 2 7/20/201110:52:20 18.9 1.7 5.8 

### Run 2 7/20/201110:52:40 18.9 1.7 5.6 

### Run 2 7/20/201110:53:00 18.9 1.7 5.5 

### Run 2 7/20/201110:53:20 19.0 1.7 5.4 

### Run2 7/20/201110:53:40 18.9 1.7 5.3 

### Run2 7/20/201110:54:00 18.9 1.7 5.2 

### Run2 7/20/201110:54:20 19.0 1.7 5.2 

### Run 2 7/20/201110:54:40 19.0 1.7 5.2 

### Run 2 7/20/201110:55:00 19.0 1.7 5.1 

### Run 2 7/20/201110:55:20 19.0 1.7 5.1 

### Run2 7/20/201110:55:40 18.9 1.7 5.1 

### Run2 7/20/201110:56:00 18.9 1.7 5.0 

### Run 2 7/20/201110:56:20 18.9 1.8 4.9 

### Run 2 7/20/201110:56:40 18.9 1.8 4.7 

### Run 2 7/20/201110:57:00 18.9 1.8 4.7 

### Run 2 7/20/201110:57:20 18.9 1.8 4.6 

### Run 2 7/20/201110:57:40 18.9 1.7 4.5 

### Run 2 7/20/201110:58:00 18.9 1.8 4.5 

### Run 2 7/20/201110:58:20 18.9 1.7 4.6 

### Run 2 7/20/201110:58:40 18.9 1.7 4.6 

### Run2 7/20/201110:59:00 18.9 1.8 4.6 

### Run2 7/20/201110:59:20 18.9 1.8 4.6 

### Run2

Page 10 of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia. Minnesota Furnace Stack B



### TIMESTAMP O2

### ,% CO2, 

### % 

### 502, ppm 

### Notes 7/20/201110:59:40 18.9 1.8 4.6 Run2 7/20/201111:00:00 18.9 1.8 4.5 Run2 7/20/201111:00:20 18.9 1.8 4.5 Run2 7/20/201111:00:40 18.9 1.7 4.6 Run2 7/20/201111:01:00 18.9 1.7 4.6 Run 2 7/20/201111:01:20 18.9 1.7 4.7 Run 2 7/20/201111:01:40 19.0 1.7 4.7 Run 2 7/20/201111:02:00 19.0 1.7 4.7 Run 2 7/20/201111:02:20 19.0 1.7 4.7 Run 2 7/20/201111:02:40 19.0 1.7 4.7 Run2 7/20/201111:03:00 19.0 1.7 4.7 Run2 7/20/201111:03:20 19.0 1.7 4.7 Run2 7/20/201111:03:40 19.0 1.7 4.8 Run 2 7/20/201111:04:00 19.0 1.7 4.9 Run 2 7/20/201111:04:20 19.0 1.7 5.0 Run2 7/20/201111:04:40 19.0 1.7 5.0 Run 2 7/20/201111:05:00 19.0 1.7 4.9 Run 2 7/20/201111:05:20 19.0 1.7 4.9 Run 2 7/20/201111:05:40 19.0 1.7 4.9 Run 2 7/20/201111:06:00 19.0 1.7 5.0 Run 2 7/20/201111:06:20 19.0 1.7 5.0 Run 2 7/20/201111:06:40 19.0 1.7 5.0 Run2 7/20/201111:07:00 19.0 1.7 5.1 Run2 7/20/201111:07:20 19.0 1.7 5.1 Run 2 7/20/201111:07:40 19.0 1.7 5.3 Run 2 7/20/201111:08:00 19.0 1.7 5.3 Run 2 7/20/201111:08:20 19.0 1.7 5.3 Run 2 7/20/201111:08:40 19.0 1.7 5.2 Run 2 7/20/201111:09:00 19.0 1.7 5.2 Run2 7/20/201111:09:20 18.9 1.7 5.1 Run2 7/20/201111:09:40 18.9 1.8 5.1 Run2 7/20/201111:10:00 19.0 1.7 5.1 Run2 7/20/201111:10:20 19.0 1.7 5.1 Run 2 7/20/201111:10:40 18.9 1.8 4.9 Run 2 7/20/201111:11:00 18.9 1.7 4.7 Run 2 7/20/201111:11:20 18.9 1.7 4.5 Run2 7/20/201111:11:40 19.0 1.7 4.5 Run2 7/20/201111:12:00 18.9 1.7 4.6 Run2 7/20/201111:12:20 18.9 1.7 4.6 Run 2 7/20/201111:12:40 19.0 1.7 4.7 Run 2 7/20/201111:13:00 18.9 1.7 4.7 Run 2 7/20/201111:13:20 18.9 1.7 4.9 Run 2 7/20/201111:13:40 18.9 1.7 5.1 Run 2 7/20/201111:14:00 18.9 1.7 5.2 Run 2 7/20/201111:14:20 18.9 1.7 5.2 Run2 7/20/201111:14:40 19.0 1.7 5.1 Run2 7/20/201111:15:00 19.0 1.7 5.1 Run 2 7/20/201111:15:20 19.0 1.7 5.0 Run 2 7/20/201111:15:40 18.9 1.7 5.0 Run 2 7/20/201111:16:00 18.9 1.7 5.1 Run2 7/20/201111:16:20 18.9 1.7 5.1 Run2 7/20/201111:16:40 18.9 1.8 5.0 Run 2 7/20/201111:17:00 19.0 1.7 4.9 Run 2 7/20/201111:17:20 18.9 1.7 4.8 Run 2 7/20/201111:17:40 18.9 1.7 4.6 Run2 7/20/201111:18:00 19.0 1.7 4.6 Run 2 7/20/201111:18:20 19.0 1.7 4.6 Run 2 7/20/201111:18:40 18.9 1.7 4.7 Run 2 7/20/201111:19:00 19.0 1.7 4.7 Run 2 7/20/201111:19:20 19.0 1.7 4.7 Run2

Page 11 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia. Minnesota Furnace Stack B



### TIMESTAMP O2

### ,% CO2, 

### % 

### 502, ppm 

### Notes 7/20/201110:59:40 18.9 1.8 4.6 Run2 7/20/201111:00:00 18.9 1.8 4.5 Run2 7/20/201111:00:20 18.9 1.8 4.5 Run2 7/20/201111:00:40 18.9 1.7 4.6 Run2 7/20/201111:01:00 18.9 1.7 4.6 Run 2 7/20/201111:01:20 18.9 1.7 4.7 Run 2 7/20/201111:01:40 19.0 1.7 4.7 Run 2 7/20/201111:02:00 19.0 1.7 4.7 Run 2 7/20/201111:02:20 19.0 1.7 4.7 Run 2 7/20/201111:02:40 19.0 1.7 4.7 Run2 7/20/201111:03:00 19.0 1.7 4.7 Run2 7/20/201111:03:20 19.0 1.7 4.7 Run2 7/20/201111:03:40 19.0 1.7 4.8 Run 2 7/20/201111:04:00 19.0 1.7 4.9 Run 2 7/20/201111:04:20 19.0 1.7 5.0 Run2 7/20/201111:04:40 19.0 1.7 5.0 Run 2 7/20/201111:05:00 19.0 1.7 4.9 Run 2 7/20/201111:05:20 19.0 1.7 4.9 Run 2 7/20/201111:05:40 19.0 1.7 4.9 Run 2 7/20/201111:06:00 19.0 1.7 5.0 Run 2 7/20/201111:06:20 19.0 1.7 5.0 Run 2 7/20/201111:06:40 19.0 1.7 5.0 Run2 7/20/201111:07:00 19.0 1.7 5.1 Run2 7/20/201111:07:20 19.0 1.7 5.1 Run 2 7/20/201111:07:40 19.0 1.7 5.3 Run 2 7/20/201111:08:00 19.0 1.7 5.3 Run 2 7/20/201111:08:20 19.0 1.7 5.3 Run 2 7/20/201111:08:40 19.0 1.7 5.2 Run 2 7/20/201111:09:00 19.0 1.7 5.2 Run2 7/20/201111:09:20 18.9 1.7 5.1 Run2 7/20/201111:09:40 18.9 1.8 5.1 Run2 7/20/201111:10:00 19.0 1.7 5.1 Run2 7/20/201111:10:20 19.0 1.7 5.1 Run 2 7/20/201111:10:40 18.9 1.8 4.9 Run 2 7/20/201111:11:00 18.9 1.7 4.7 Run 2 7/20/201111:11:20 18.9 1.7 4.5 Run2 7/20/201111:11:40 19.0 1.7 4.5 Run2 7/20/201111:12:00 18.9 1.7 4.6 Run2 7/20/201111:12:20 18.9 1.7 4.6 Run 2 7/20/201111:12:40 19.0 1.7 4.7 Run 2 7/20/201111:13:00 18.9 1.7 4.7 Run 2 7/20/201111:13:20 18.9 1.7 4.9 Run 2 7/20/201111:13:40 18.9 1.7 5.1 Run 2 7/20/201111:14:00 18.9 1.7 5.2 Run 2 7/20/201111:14:20 18.9 1.7 5.2 Run2 7/20/201111:14:40 19.0 1.7 5.1 Run2 7/20/201111:15:00 19.0 1.7 5.1 Run 2 7/20/201111:15:20 19.0 1.7 5.0 Run 2 7/20/201111:15:40 18.9 1.7 5.0 Run 2 7/20/201111:16:00 18.9 1.7 5.1 Run2 7/20/201111:16:20 18.9 1.7 5.1 Run2 7/20/201111:16:40 18.9 1.8 5.0 Run 2 7/20/201111:17:00 19.0 1.7 4.9 Run 2 7/20/201111:17:20 18.9 1.7 4.8 Run 2 7/20/201111:17:40 18.9 1.7 4.6 Run2 7/20/201111:18:00 19.0 1.7 4.6 Run 2 7/20/201111:18:20 19.0 1.7 4.6 Run 2 7/20/201111:18:40 18.9 1.7 4.7 Run 2 7/20/201111:19:00 19.0 1.7 4.7 Run 2 7/20/201111:19:20 19.0 1.7 4.7 Run2

Page 11 of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2 •

### % S02. ppm Notes 7/20/201111:19:40 19.0 1.7 4.7 Run2 7/20/201111:20:00 19.0 1.7 4.9 Run2 7/20/201111:20:20 19.0 1.7 5.0 Run 2 7/20/201111:20:40 19.0 1.7 5.2 Run 2 7/20/201111:21:00 19.0 1.7 5.3 7/20/201111:21:20 19.0 1.7 5.5 7/20/201111:21:40 19.0 1.7 5.6 7/20/201111:22:00 19.0 1.7 5.7 7/20/201111:22:20 19.0 1.7 5.7 7/20/201111:22:40 19.0 1.7 5.7 7/20/201111:23:00 19.0 1.7 5.8 7/20/201111:23:20 19.0 1.7 6.1 7/20/201111:23:40 19.0 1.7 6.3 7/20/201111:24:00 19.0 1.7 6.4 7/20/201111:24:20 19.0 1.7 6.4 7/20/201111:24:40 19.0 1.7 6.3 7/20/201111:25:00 9.0 3.7 6.0 7/20/201111:25:20 0.1 0.3 4.3 Bias Drift Check 7/20/201111:25:40 0.0 0.2 2.1 Bias Drift Check 7/20/201111:26:00 0.0 0.2 1.0 Bias DriftCheck 7/20/201111:26:20 0.0 0.2 0.9 Bias DriftCheck 7/20/201111:26:40 0.0 0.2 1.0 Bias Drift Check 7/20/201111:27:00 0.0 O.Z 1.0 N2Zero Bias Drift Check 7/20/201111:27:20 0.0 0.2 1.0 Bias DriftCheck 7/20/201111:27:40 0.0 0.2 1.0 Bias DriftCheck 7/20/201111:28:00 0.0 0.2 1.0 Bias Drift Check 7/20/201111:28:20 0.0 0.2 4.1 Bias DriftCheck 7/20/201111:28:40 0.0 0.2 21.4 Bias Drift Check 7/20/201111:29:00 0.0 0.1 25.1 Bias Drift Check 7/20/201111:29:20 0.0 0.1 26.1 Bias Drift Check 7/20/201111:29:40 0.0 0.1 26.1 Bias Drift Check 7/20/201111:30:00 0.0 0.1 Z6.4 S02 27.0 ppm Bias DriftCheck 7/20/201111:30:20 0.0 0.1 26.6 Bias DriftCheck 7/20/201111:30:40 0.0 0.1 26.1 Bias Drift Check 7/20/201111:31:00 0.0 0.1 11.3 Bias Drift Check 7/20/201111:31:20 0.0 0.1 4.6 Bias Drift Check 7/20/201111:31:40 0.0 0.1 4.1 Bias Drift Check 7/20/201111:32:00 0.0 0.1 3.7 Bias Drift Check 7/20/201111:32:20 0.0 0.1 3.3 Bias Drift Check 7/20/201111:32:40 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:33:00 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:33:20 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:33:40 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:34:00 0.0 0.1 2.9 Bias Drift Check 7/20/201111:34:20 0.0 0.1 2.8 Bias Drift Check 7/20/201111:34:40 2.8 2.9 2.9 Bias Drift Check 7/20/201111:35:00 8.8 8.8 2.2 Bias Drift Check 7/20/201111:35:20 8.8 8.8 0.9 Bias Drift Check 7/20/201111:35:40 8.8 8.9 0.3 Bias DriftCheck 7/20/201111:36:00 8.9 8.9 0.2 02 9.0/C02 9.0 Bias Drift Check 7/20/201111:36:20 7.8 7.6 0.2 Bias DriftCheck 7/20/201111:51:00 8.3 0.8 3.1 In Stack 7/20/201111:51:20 18.9 1.7 4.2 In Stack 7/20/201111:51:40 18.9 1.7 6.5 In Stack 7/20/201111:52:00 19.0 1.7 8.0 In Stack 7/20/201111:52:20 19.0 1.7 8.4 In Stack 7/20/201111:52:40 19.0 1.7 8.4 In Stack 7/20/201111:53:00 19.0 1.7 8.5 In Stack 7/20/201111:53:20 19.0 1.7 8.5 In Stack 7/20/201111:53:40 19.0 1.7 8.6 In Stack

Page 12 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2 •

### % S02. ppm Notes 7/20/201111:19:40 19.0 1.7 4.7 Run2 7/20/201111:20:00 19.0 1.7 4.9 Run2 7/20/201111:20:20 19.0 1.7 5.0 Run 2 7/20/201111:20:40 19.0 1.7 5.2 Run 2 7/20/201111:21:00 19.0 1.7 5.3 7/20/201111:21:20 19.0 1.7 5.5 7/20/201111:21:40 19.0 1.7 5.6 7/20/201111:22:00 19.0 1.7 5.7 7/20/201111:22:20 19.0 1.7 5.7 7/20/201111:22:40 19.0 1.7 5.7 7/20/201111:23:00 19.0 1.7 5.8 7/20/201111:23:20 19.0 1.7 6.1 7/20/201111:23:40 19.0 1.7 6.3 7/20/201111:24:00 19.0 1.7 6.4 7/20/201111:24:20 19.0 1.7 6.4 7/20/201111:24:40 19.0 1.7 6.3 7/20/201111:25:00 9.0 3.7 6.0 7/20/201111:25:20 0.1 0.3 4.3 Bias Drift Check 7/20/201111:25:40 0.0 0.2 2.1 Bias Drift Check 7/20/201111:26:00 0.0 0.2 1.0 Bias DriftCheck 7/20/201111:26:20 0.0 0.2 0.9 Bias DriftCheck 7/20/201111:26:40 0.0 0.2 1.0 Bias Drift Check 7/20/201111:27:00 0.0 O.Z 1.0 N2Zero Bias Drift Check 7/20/201111:27:20 0.0 0.2 1.0 Bias DriftCheck 7/20/201111:27:40 0.0 0.2 1.0 Bias DriftCheck 7/20/201111:28:00 0.0 0.2 1.0 Bias Drift Check 7/20/201111:28:20 0.0 0.2 4.1 Bias DriftCheck 7/20/201111:28:40 0.0 0.2 21.4 Bias Drift Check 7/20/201111:29:00 0.0 0.1 25.1 Bias Drift Check 7/20/201111:29:20 0.0 0.1 26.1 Bias Drift Check 7/20/201111:29:40 0.0 0.1 26.1 Bias Drift Check 7/20/201111:30:00 0.0 0.1 Z6.4 S02 27.0 ppm Bias DriftCheck 7/20/201111:30:20 0.0 0.1 26.6 Bias DriftCheck 7/20/201111:30:40 0.0 0.1 26.1 Bias Drift Check 7/20/201111:31:00 0.0 0.1 11.3 Bias Drift Check 7/20/201111:31:20 0.0 0.1 4.6 Bias Drift Check 7/20/201111:31:40 0.0 0.1 4.1 Bias Drift Check 7/20/201111:32:00 0.0 0.1 3.7 Bias Drift Check 7/20/201111:32:20 0.0 0.1 3.3 Bias Drift Check 7/20/201111:32:40 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:33:00 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:33:20 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:33:40 0.0 0.1 3.2 Bias DriftCheck 7/20/201111:34:00 0.0 0.1 2.9 Bias Drift Check 7/20/201111:34:20 0.0 0.1 2.8 Bias Drift Check 7/20/201111:34:40 2.8 2.9 2.9 Bias Drift Check 7/20/201111:35:00 8.8 8.8 2.2 Bias Drift Check 7/20/201111:35:20 8.8 8.8 0.9 Bias Drift Check 7/20/201111:35:40 8.8 8.9 0.3 Bias DriftCheck 7/20/201111:36:00 8.9 8.9 0.2 02 9.0/C02 9.0 Bias Drift Check 7/20/201111:36:20 7.8 7.6 0.2 Bias DriftCheck 7/20/201111:51:00 8.3 0.8 3.1 In Stack 7/20/201111:51:20 18.9 1.7 4.2 In Stack 7/20/201111:51:40 18.9 1.7 6.5 In Stack 7/20/201111:52:00 19.0 1.7 8.0 In Stack 7/20/201111:52:20 19.0 1.7 8.4 In Stack 7/20/201111:52:40 19.0 1.7 8.4 In Stack 7/20/201111:53:00 19.0 1.7 8.5 In Stack 7/20/201111:53:20 19.0 1.7 8.5 In Stack 7/20/201111:53:40 19.0 1.7 8.6 In Stack

Page 12 of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/201111:54:00 19.0 1.7 8.6 In Stack 7/20/201111:54:20 19.0 1.7 8.7 In Stack 7/20/201111:54:40 19.0 1.7 8.9 In Stack 7/20/201111:55:00 19.0 1.7 9.0 Run 3 7/20/201111:55:20 19.0 1.7 9.0 Run3 7/20/201111:55:40 19.0 1.7 9.1 Run 3 7/20/201111:56:00 19.0 1.7 9.1 Run 3 7/20/201111:56:20 19.0 1.7 8.9 Run 3 7/20/201111:56:40 19.0 1.8 8.7 Run 3 7/20/201111:57:00 19.0 1.7 8.5 Run 3 7/20/201111:57:20 19.0 1.7 8.4 Run 3 7/20/201111:57:40 19.0 1.8 8.3 Run 3 7/20/201111:58:00 19.0 1.7 8.2 Run 3 7/20/201111:58:20 19.0 1.7 8.1 Run 3 7/20/201111:58:40 19.0 1.8 8.0 Run 3 7/20/201111:59:00 19.0 1.8 7.9 Run 3 7/20/201111:59:20 19.0 1.8 7.9 Run 3 7/20/201111:59:40 19.1 1.7 7.7 Run 3 7/20/201112:00:00 19.1 1.7 7.5 Run 3 7/20/201112:00:20 19.0 1.7 7.3 Run 3 7/20/201112:00:40 19.0 1.7 7.2 Run 3 7/20/201112:01:00 19.1 1.7 7.1 Run 3 7/20/201112:01:20 19.1 1.7 6.9 Run 3 7/20/201112:01:40 19.1 1.7 6.9 Run 3 7/20/201112:02:00 19.1 1.7 7.0 Run 3 7/20/201112:02:20 19.1 1.7 7.0 Run 3 7/20/201112:02:40 19.1 1.7 6.8 Run 3 7/20/2011 12:03:00 19.1 1.7 6.8 Run 3 7/20/2011 12:03:20 19.1 1.7 6.9 Run 3 7/20/2011 12:03:40 19.1 1.7 6.9 Run 3 7/20/2011 12:04:00 19.1 1.7 7.0 Run 3 7/20/2011 12:04:20 19.1 1.7 7.2 Run 3 7/20/2011 12:04:40 19.1 1.7 7.2 Run 3 7/20/2011 12:05:00 19.1 1.7 7.2 Run 3 7/20/2011 12:05:20 19.1 1.7 7.3 Run 3 7/20/2011 12:05:40 19.1 1.7 7.3 Run 3 7/20/201112:06:00 19.1 1.7 7.4 Run 3 7/20/2011 12:06:20 19.1 1.7 7.5 Run 3 7/20/2011 12:06:40 19.1 1.7 7.5 Run 3 7/20/2011 12:07:00 19.1 1.7 7.4 Run 3 7/20/2011 12:07:20 19.1 1.7 7.4 Run 3 7/20/2011 12:07:40 19.2 1.7 7.4 Run 3 7/20/2011 12:08:00 19.2 1.7 7.4 Run 3 7/20/2011 12:08:20 19.2 1.7 7.4 Run3 7/20/2011 12:08:40 19.1 1.7 7.3 Run3 7/20/2011 12:09:00 19.1 1.7 7.3 Run 3 7/20/2011 12:09:20 19.1 1.7 7.2 Run 3 7/20/2011 12:09:40 19.1 1.7 7.0 Run 3 7/20/2011 12:10:00 19.1 1.7 6.9 Run 3 7/20/2011 12:10:20 19.1 1.7 6.9 Run 3 7/20/2011 12:10:40 19.1 1.7 6.7 Run 3 7/20/201112:11:00 19.0 1.7 6.6 Run3 7/20/201112:11:20 19.0 1.7 6.5 Run3 7/20/201112:11:40 19.1 1.7 6.5 Run 3 7/20/201112:12:00 19.1 1.7 6.5 Run 3 7/20/201112:12:20 19.1 1.7 6.5 Run 3 7/20/2011 12:12:40 19.1 1.7 6.5 Run 3 7/20/2011 12:13:00 19.1 1.7 6.3 Run 3 7/20/201112:13:20 19.0 1.7 6.0 Run3 7/20/201112:13:40 19.0 1.8 5.9 Run3 7/20/2011 12:14:00 19.0 1.7 5.8 Run 3 7/20/201112:14:20 19.0 1.7 5.7 Run 3 7/20/2011 12:14:40 19.0 1.7 5.5 Run 3 Page 13 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/201111:54:00 19.0 1.7 8.6 In Stack 7/20/201111:54:20 19.0 1.7 8.7 In Stack 7/20/201111:54:40 19.0 1.7 8.9 In Stack 7/20/201111:55:00 19.0 1.7 9.0 Run 3 7/20/201111:55:20 19.0 1.7 9.0 Run3 7/20/201111:55:40 19.0 1.7 9.1 Run 3 7/20/201111:56:00 19.0 1.7 9.1 Run 3 7/20/201111:56:20 19.0 1.7 8.9 Run 3 7/20/201111:56:40 19.0 1.8 8.7 Run 3 7/20/201111:57:00 19.0 1.7 8.5 Run 3 7/20/201111:57:20 19.0 1.7 8.4 Run 3 7/20/201111:57:40 19.0 1.8 8.3 Run 3 7/20/201111:58:00 19.0 1.7 8.2 Run 3 7/20/201111:58:20 19.0 1.7 8.1 Run 3 7/20/201111:58:40 19.0 1.8 8.0 Run 3 7/20/201111:59:00 19.0 1.8 7.9 Run 3 7/20/201111:59:20 19.0 1.8 7.9 Run 3 7/20/201111:59:40 19.1 1.7 7.7 Run 3 7/20/201112:00:00 19.1 1.7 7.5 Run 3 7/20/201112:00:20 19.0 1.7 7.3 Run 3 7/20/201112:00:40 19.0 1.7 7.2 Run 3 7/20/201112:01:00 19.1 1.7 7.1 Run 3 7/20/201112:01:20 19.1 1.7 6.9 Run 3 7/20/201112:01:40 19.1 1.7 6.9 Run 3 7/20/201112:02:00 19.1 1.7 7.0 Run 3 7/20/201112:02:20 19.1 1.7 7.0 Run 3 7/20/201112:02:40 19.1 1.7 6.8 Run 3 7/20/2011 12:03:00 19.1 1.7 6.8 Run 3 7/20/2011 12:03:20 19.1 1.7 6.9 Run 3 7/20/2011 12:03:40 19.1 1.7 6.9 Run 3 7/20/2011 12:04:00 19.1 1.7 7.0 Run 3 7/20/2011 12:04:20 19.1 1.7 7.2 Run 3 7/20/2011 12:04:40 19.1 1.7 7.2 Run 3 7/20/2011 12:05:00 19.1 1.7 7.2 Run 3 7/20/2011 12:05:20 19.1 1.7 7.3 Run 3 7/20/2011 12:05:40 19.1 1.7 7.3 Run 3 7/20/201112:06:00 19.1 1.7 7.4 Run 3 7/20/2011 12:06:20 19.1 1.7 7.5 Run 3 7/20/2011 12:06:40 19.1 1.7 7.5 Run 3 7/20/2011 12:07:00 19.1 1.7 7.4 Run 3 7/20/2011 12:07:20 19.1 1.7 7.4 Run 3 7/20/2011 12:07:40 19.2 1.7 7.4 Run 3 7/20/2011 12:08:00 19.2 1.7 7.4 Run 3 7/20/2011 12:08:20 19.2 1.7 7.4 Run3 7/20/2011 12:08:40 19.1 1.7 7.3 Run3 7/20/2011 12:09:00 19.1 1.7 7.3 Run 3 7/20/2011 12:09:20 19.1 1.7 7.2 Run 3 7/20/2011 12:09:40 19.1 1.7 7.0 Run 3 7/20/2011 12:10:00 19.1 1.7 6.9 Run 3 7/20/2011 12:10:20 19.1 1.7 6.9 Run 3 7/20/2011 12:10:40 19.1 1.7 6.7 Run 3 7/20/201112:11:00 19.0 1.7 6.6 Run3 7/20/201112:11:20 19.0 1.7 6.5 Run3 7/20/201112:11:40 19.1 1.7 6.5 Run 3 7/20/201112:12:00 19.1 1.7 6.5 Run 3 7/20/201112:12:20 19.1 1.7 6.5 Run 3 7/20/2011 12:12:40 19.1 1.7 6.5 Run 3 7/20/2011 12:13:00 19.1 1.7 6.3 Run 3 7/20/201112:13:20 19.0 1.7 6.0 Run3 7/20/201112:13:40 19.0 1.8 5.9 Run3 7/20/2011 12:14:00 19.0 1.7 5.8 Run 3 7/20/201112:14:20 19.0 1.7 5.7 Run 3 7/20/2011 12:14:40 19.0 1.7 5.5 Run 3 Page 13 of 17ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2, 

### % S02. ppm Notes 7/2012011 12:15:00 19.0 1.7 5.5 Run 3 7/20/201112:15:20 19.0 1.7 5.5 Run 3 7/20/201112:15:40 19.0 1.7 5.4 Run3 7/20/201112:16:00 19.0 1.7 5.5 Run 3 7/20/201112:16:20 19.1 1.7 5.5 Run 3 7/20/201112:16:40 19.1 1.7 5.6 Run 3 7/20/201112:17:00 19.1 1.7 5.5 Run 3 7/20/201112:17:20 19.1 1.7 5.5 Run 3 7/20/2011 12:17:40 19.1 1.7 5.7 Run 3 7/20/201112:18:00 19.1 1.7 5.7 Run 3 7/20/201112:18:20 19.1 1.7 5.8 Run 3 7/20/201112:18:40 19.1 1.7 5.8 Run 3 7/20/201112:19:00 19.1 1.7 5.7 Run 3 7/20/201112:19:20 19.1 1.7 5.6 Run 3 7/20/201112:19:40 19.1 1.7 5.6 Run 3 7/20/2011 12:20:00 19.1 1.7 5.7 Run 3 7/20/2011 12:20:20 19.1 1.7 5.7 Run 3 7/20/2011 12:20:40 19.1 1.7 5.5 Run 3 7/20/201112:21:00 19.0 1.7 5.4 Run 3 7/20/201112:21:20 19.1 1.7 5.5 Run 3 7/20/2011 12:21:40 19.1 1.7 5.6 Run 3 7/20/2011 12:22:00 19.1 1.7 5.5 Run 3 7/20/2011 12:22:20 19.0 1.7 5.4 Run 3 7/20/2011 12:22:40 19.0 1.7 5.4 Run 3 7/20/2011 12:23:00 19.0 1.7 5.4 Run 3 7/20/2011 12:23:20 19.0 1.7 5.3 Run 3 7/20/2011 12:23:40 19.0 1.8 5.3 Run 3 7/20/201112:24:00 19.0 1.7 5.3 Run 3 7/20/2011 12:24:20 19.0 1.8 5.2 Run3 7/20/2011 12:24:40 19.0 1.8 5.1 Run 3 7/20/2011 12:25:00 19.0 1.8 4.8 Run 3 7/20/2011 12:25:20 19.0 1.8 4.6 Run 3 7/20/2011 12:25:40 19.0 1.8 4.5 Run 3 7/20/2011 12:26:00 19.0 1.7 4.6 Run 3 7/20/2011 12:26:20 19.0 1.7 4.7 Run 3 7/20/2011 12:26:40 19.0 1.7 4.8 Run 3 7/20/2011 12:27:00 19.0 1.7 4.9 Run 3 7/20/2011 12:27:20 19.0 1.7 5.0 Run3 7/20/201112:27:40 19.0 1.7 5.1 Run 3 7/20/2011 12:28:00 19.0 1.7 5.3 Run 3 7/20/201112:28:20 19.0 1.7 5.4 Run 3 7/20/2011 12:28:40 19.0 1.7 5.4 Run 3 7/20/2011 12:29:00 19.0 1.7 5.4 Run3 7/20/2011 12:29:20 19.0 1.7 5.4 Run 3 7/20/2011 12:29:40 19.0 1.7 5.4 Run 3 7/20/2011 12:30:00 19.0 1.7 5.5 Run 3 7/20/201112:30:20 19.0 1.7 5.6 Run 3 7/20/201112:30:40 19.0 1.7 5.7 Run 3 7/20/2011 12:31:00 19.0 1.7 5.7 Run 3 7/20/201112:31:20 19.0 1.7 5.7 Run 3 7/20/201112:31:40 19.0 1.7 5.5 Run 3 7/20/2011 12:32:00 19.0 1.7 5.3 Run 3 7/20/2011 12:32:20 19.1 1.7 5.2 Run 3 7/20/2011 12:32:40 19.0 1.7 5.2 Run 3 7/20/2011 12:33:00 19.0 1.7 5.3 Run 3 7/20/2011 12:33:20 19.0 1.7 5.3 Run 3 7/20/201112:33:40 19.1 1.7 5.1 Run 3 7/20/2011 12:34:00 19.0 1.7 5.0 Run 3 7/20/2011 12:34:20 19.0 1.7 5.1 Run 3 7/20/2011 12:34:40 19.1 1.7 5.2 Run 3 7/20/2011 12:35:00 19.1 1.7 5.3 Run 3 7/20/2011 12:35:20 19.1 1.7 5.4 Run 3 7/20/2011 12:35:40 19.1 1.7 5.6 Run 3 7/20/2011 12:36:00 19.1 1.7 5.7 Run 3
Page 14 of 17 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2, 

### % S02. ppm Notes 7/2012011 12:15:00 19.0 1.7 5.5 Run 3 7/20/201112:15:20 19.0 1.7 5.5 Run 3 7/20/201112:15:40 19.0 1.7 5.4 Run3 7/20/201112:16:00 19.0 1.7 5.5 Run 3 7/20/201112:16:20 19.1 1.7 5.5 Run 3 7/20/201112:16:40 19.1 1.7 5.6 Run 3 7/20/201112:17:00 19.1 1.7 5.5 Run 3 7/20/201112:17:20 19.1 1.7 5.5 Run 3 7/20/2011 12:17:40 19.1 1.7 5.7 Run 3 7/20/201112:18:00 19.1 1.7 5.7 Run 3 7/20/201112:18:20 19.1 1.7 5.8 Run 3 7/20/201112:18:40 19.1 1.7 5.8 Run 3 7/20/201112:19:00 19.1 1.7 5.7 Run 3 7/20/201112:19:20 19.1 1.7 5.6 Run 3 7/20/201112:19:40 19.1 1.7 5.6 Run 3 7/20/2011 12:20:00 19.1 1.7 5.7 Run 3 7/20/2011 12:20:20 19.1 1.7 5.7 Run 3 7/20/2011 12:20:40 19.1 1.7 5.5 Run 3 7/20/201112:21:00 19.0 1.7 5.4 Run 3 7/20/201112:21:20 19.1 1.7 5.5 Run 3 7/20/2011 12:21:40 19.1 1.7 5.6 Run 3 7/20/2011 12:22:00 19.1 1.7 5.5 Run 3 7/20/2011 12:22:20 19.0 1.7 5.4 Run 3 7/20/2011 12:22:40 19.0 1.7 5.4 Run 3 7/20/2011 12:23:00 19.0 1.7 5.4 Run 3 7/20/2011 12:23:20 19.0 1.7 5.3 Run 3 7/20/2011 12:23:40 19.0 1.8 5.3 Run 3 7/20/201112:24:00 19.0 1.7 5.3 Run 3 7/20/2011 12:24:20 19.0 1.8 5.2 Run3 7/20/2011 12:24:40 19.0 1.8 5.1 Run 3 7/20/2011 12:25:00 19.0 1.8 4.8 Run 3 7/20/2011 12:25:20 19.0 1.8 4.6 Run 3 7/20/2011 12:25:40 19.0 1.8 4.5 Run 3 7/20/2011 12:26:00 19.0 1.7 4.6 Run 3 7/20/2011 12:26:20 19.0 1.7 4.7 Run 3 7/20/2011 12:26:40 19.0 1.7 4.8 Run 3 7/20/2011 12:27:00 19.0 1.7 4.9 Run 3 7/20/2011 12:27:20 19.0 1.7 5.0 Run3 7/20/201112:27:40 19.0 1.7 5.1 Run 3 7/20/2011 12:28:00 19.0 1.7 5.3 Run 3 7/20/201112:28:20 19.0 1.7 5.4 Run 3 7/20/2011 12:28:40 19.0 1.7 5.4 Run 3 7/20/2011 12:29:00 19.0 1.7 5.4 Run3 7/20/2011 12:29:20 19.0 1.7 5.4 Run 3 7/20/2011 12:29:40 19.0 1.7 5.4 Run 3 7/20/2011 12:30:00 19.0 1.7 5.5 Run 3 7/20/201112:30:20 19.0 1.7 5.6 Run 3 7/20/201112:30:40 19.0 1.7 5.7 Run 3 7/20/2011 12:31:00 19.0 1.7 5.7 Run 3 7/20/201112:31:20 19.0 1.7 5.7 Run 3 7/20/201112:31:40 19.0 1.7 5.5 Run 3 7/20/2011 12:32:00 19.0 1.7 5.3 Run 3 7/20/2011 12:32:20 19.1 1.7 5.2 Run 3 7/20/2011 12:32:40 19.0 1.7 5.2 Run 3 7/20/2011 12:33:00 19.0 1.7 5.3 Run 3 7/20/2011 12:33:20 19.0 1.7 5.3 Run 3 7/20/201112:33:40 19.1 1.7 5.1 Run 3 7/20/2011 12:34:00 19.0 1.7 5.0 Run 3 7/20/2011 12:34:20 19.0 1.7 5.1 Run 3 7/20/2011 12:34:40 19.1 1.7 5.2 Run 3 7/20/2011 12:35:00 19.1 1.7 5.3 Run 3 7/20/2011 12:35:20 19.1 1.7 5.4 Run 3 7/20/2011 12:35:40 19.1 1.7 5.6 Run 3 7/20/2011 12:36:00 19.1 1.7 5.7 Run 3
Page 14 of 17ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP 

### O2

### ,% CO2

### ,% 

### 502• ppm Notes 7/2012011 12:36:20 19.1 1.7 5.7 Run 3 7/20/2011 12:36:40 19.1 1.7 5.5 Run 3 7/20/2011 12:37:00 19.1 1.7 5.3 Run 3 7/20/2011 12:37:20 19.1 1.7 5.3 Run 3 7/20/2011 12:37:40 19.1 1.7 5.5 Run 3 7/20/2011 12:38:00 19.0 1.7 5.6 Run 3 7/20/2011 12:38:20 19.1 1.7 5.6 Run 3 7/20/2011 12:38:40 19.1 1.7 5.5 Run 3 7/20/2011 12:39:00 19.1 1.7 5.4 Run 3 7/20/2011 12:39:20 19.0 1.7 5.2 Run3 7/20/2011 12:39:40 19.0 1.7 5.0 Run 3 7/20/2011 12:40:00 19.0 1.7 5.0 Run 3 7/20/2011 12:40:20 19.0 1.7 5.0 Run 3 7/20/2011 12:40:40 19.0 1.7 5.1 Run 3 7/20/201112:41:00 19.0 1.8 5.1 Run 3 7/20/201112:41:20 19.0 1.7 4.8 Run 3 7/20/201112:41:40 19.0 1.8 4.7 Run 3 7/20/2011 12:42:00 19.0 1.8 4.8 Run 3 7/20/2011 12:42:20 19.0 1.7 4.9 Run 3 7/20/2011 12:42:40 19.0 1.7 5.0 Run 3 7/20/2011 12:43:00 19.0 1.7 5.2 Run 3 7/20/2011 12:43:20 19.0 1.7 5.4 Run 3 7/20/201112:43:40 19.0 1.7 5.5 Run 3 7/20/2011 12:44:00 19.0 1.7 5.7 Run 3 7/20/2011 12:44:20 19.0 1.7 6.1 Run 3 7/20/2011 12:44:40 19.0 1.7 6.4 Run 3 7/20/2011 12:45:00 19.0 1.7 6.6 Run 3 7/20/2011 12:45:20 19.0 1.7 6.6 Run3 7/20/2011 12:45:40 19.0 1.7 6.6 Run3 7/20/2011 12:46:00 19.0 1.7 6.7 Run3 7/20/2011 12:46:20 19.0 1.7 6.8 Run 3 7/20/2011 12:46:40 19.0 1.7 6.8 Run 3 7/20/2011 12:47:00 19.0 1.7 6.7 Run 3 7/20/2011 12:47:20 19.0 1.7 6.6 Run 3 7/20/2011 12:47:40 19.0 1.7 6.7 Run3 7/20/2011 12:48:00 19.0 1.7 6.7 Run 3 7/20/2011 12:48:20 19.0 1.7 6.7 Run3 7/20/2011 12:48:40 19.1 1.7 6.6 Run 3 7/20/2011 12:49:00 19.0 1.7 6.7 Run 3 7/20/201112:49:20 19.0 1.7 6.8 Run 3 7/20/2011 12:49:40 19.0 1.7 7.0 Run3 7/20/2011 12:50:00 19.0 1.7 7.1 Run 3 7/20/2011 12:50:20 19.0 1.7 7.2 Run 3 7/20/201112:50:40 19.0 1.7 7.2 Run 3 7/20/201112:51:00 19.0 1.7 7.2 Run 3 7/20/201112:51:20 19.0 1.7 7.2 Run 3 7/20/201112:51:40 19.0 1.7 7.1 Run 3 7/20/2011 12:52:00 19.0 1.7 7.1 Run 3 7/20/2011 12:52:20 19.0 1.7 7.2 Run 3 7/20/2011 12:52:40 19.0 1.7 7.3 Run 3 7/20/2011 12:53:00 19.0 1.7 7.3 Run 3 7/20/2011 12:53:20 19.0 1.7 7.3 Run 3 7/20/201112:53:40 19.0 1.7 7.4 Run 3 7/20/2011 12:54:00 19.0 1.7 7.4 Run 3 7/20/2011 12:54:20 19.0 1.7 7.4 Run 3 7/20/201112:54:40 19.0 1.7 7.4 Run 3 7/20/2011 12:55:00 19.0 1.7 7.6 Run 3 7/20/2011 12:55:20 19.0 1.7 7.7 Run 3 7/20/2011 12:55:40 19.0 1.7 7.7 Run 3 7/20/2011 12:56:00 19.0 1.7 7.7 Run 3 7/20/2011 12:56:20 19.0 1.7 7.7 Run3 7/20/2011 12:56:40 19.0 1.7 7.7 Run 3 7/20/2011 12:57:00 19.0 1.7 7.8 Run 3 7/20/2011 12:57:20 19.0 1.7 7.8 Run 3 Page 15 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 Virginia, Minnesota Furnace Stack B

TIMESTAMP 

### O2

### ,% CO2

### ,% 

### 502• ppm Notes 7/2012011 12:36:20 19.1 1.7 5.7 Run 3 7/20/2011 12:36:40 19.1 1.7 5.5 Run 3 7/20/2011 12:37:00 19.1 1.7 5.3 Run 3 7/20/2011 12:37:20 19.1 1.7 5.3 Run 3 7/20/2011 12:37:40 19.1 1.7 5.5 Run 3 7/20/2011 12:38:00 19.0 1.7 5.6 Run 3 7/20/2011 12:38:20 19.1 1.7 5.6 Run 3 7/20/2011 12:38:40 19.1 1.7 5.5 Run 3 7/20/2011 12:39:00 19.1 1.7 5.4 Run 3 7/20/2011 12:39:20 19.0 1.7 5.2 Run3 7/20/2011 12:39:40 19.0 1.7 5.0 Run 3 7/20/2011 12:40:00 19.0 1.7 5.0 Run 3 7/20/2011 12:40:20 19.0 1.7 5.0 Run 3 7/20/2011 12:40:40 19.0 1.7 5.1 Run 3 7/20/201112:41:00 19.0 1.8 5.1 Run 3 7/20/201112:41:20 19.0 1.7 4.8 Run 3 7/20/201112:41:40 19.0 1.8 4.7 Run 3 7/20/2011 12:42:00 19.0 1.8 4.8 Run 3 7/20/2011 12:42:20 19.0 1.7 4.9 Run 3 7/20/2011 12:42:40 19.0 1.7 5.0 Run 3 7/20/2011 12:43:00 19.0 1.7 5.2 Run 3 7/20/2011 12:43:20 19.0 1.7 5.4 Run 3 7/20/201112:43:40 19.0 1.7 5.5 Run 3 7/20/2011 12:44:00 19.0 1.7 5.7 Run 3 7/20/2011 12:44:20 19.0 1.7 6.1 Run 3 7/20/2011 12:44:40 19.0 1.7 6.4 Run 3 7/20/2011 12:45:00 19.0 1.7 6.6 Run 3 7/20/2011 12:45:20 19.0 1.7 6.6 Run3 7/20/2011 12:45:40 19.0 1.7 6.6 Run3 7/20/2011 12:46:00 19.0 1.7 6.7 Run3 7/20/2011 12:46:20 19.0 1.7 6.8 Run 3 7/20/2011 12:46:40 19.0 1.7 6.8 Run 3 7/20/2011 12:47:00 19.0 1.7 6.7 Run 3 7/20/2011 12:47:20 19.0 1.7 6.6 Run 3 7/20/2011 12:47:40 19.0 1.7 6.7 Run3 7/20/2011 12:48:00 19.0 1.7 6.7 Run 3 7/20/2011 12:48:20 19.0 1.7 6.7 Run3 7/20/2011 12:48:40 19.1 1.7 6.6 Run 3 7/20/2011 12:49:00 19.0 1.7 6.7 Run 3 7/20/201112:49:20 19.0 1.7 6.8 Run 3 7/20/2011 12:49:40 19.0 1.7 7.0 Run3 7/20/2011 12:50:00 19.0 1.7 7.1 Run 3 7/20/2011 12:50:20 19.0 1.7 7.2 Run 3 7/20/201112:50:40 19.0 1.7 7.2 Run 3 7/20/201112:51:00 19.0 1.7 7.2 Run 3 7/20/201112:51:20 19.0 1.7 7.2 Run 3 7/20/201112:51:40 19.0 1.7 7.1 Run 3 7/20/2011 12:52:00 19.0 1.7 7.1 Run 3 7/20/2011 12:52:20 19.0 1.7 7.2 Run 3 7/20/2011 12:52:40 19.0 1.7 7.3 Run 3 7/20/2011 12:53:00 19.0 1.7 7.3 Run 3 7/20/2011 12:53:20 19.0 1.7 7.3 Run 3 7/20/201112:53:40 19.0 1.7 7.4 Run 3 7/20/2011 12:54:00 19.0 1.7 7.4 Run 3 7/20/2011 12:54:20 19.0 1.7 7.4 Run 3 7/20/201112:54:40 19.0 1.7 7.4 Run 3 7/20/2011 12:55:00 19.0 1.7 7.6 Run 3 7/20/2011 12:55:20 19.0 1.7 7.7 Run 3 7/20/2011 12:55:40 19.0 1.7 7.7 Run 3 7/20/2011 12:56:00 19.0 1.7 7.7 Run 3 7/20/2011 12:56:20 19.0 1.7 7.7 Run3 7/20/2011 12:56:40 19.0 1.7 7.7 Run 3 7/20/2011 12:57:00 19.0 1.7 7.8 Run 3 7/20/2011 12:57:20 19.0 1.7 7.8 Run 3 Page 15 of 17ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11130/2011 Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### .% CO2

### ,% S02, ppm Notes 7/20/2011 12:57:40 19.0 1.7 7.9 Run 3 7/20/2011 12:58:00 19.0 1.7 8.0 Run 3 7/20/2011 12:58:20 19.0 1.7 8.0 Run 3 7/20/2011 12:58:40 19.0 1.7 8.0 Run 3 7/20/2011 12:59:00 19.0 1.7 8.1 Run 3 7/20/2011 12:59:20 19.0 1.7 8.1 Run 3 7/20/2011 12:59:40 19.0 1.7 8.1 Run 3 7/20/2011 13:00:00 19.0 1.7 8.1 Run 3 7/20/2011 13:00:20 19.0 1.7 8.1 Run 3 7/20/2011 13:00:40 19.0 1.7 8.2 Run 3 7/20/2011 13:01:00 19.0 1.7 8.1 Run 3 7/20/2011 13:01:20 19.0 1.7 8.1 Run 3 7/20/201113:01:40 19.0 1.7 8.1 Run 3 7/20/2011 13:02:00 19.0 1.8 8.0 7/20/2011 13:02:20 19.0 1.7 8.1 7/20/2011 13:02:40 19.0 1.7 8.1 7/20/2011 13:03:00 19.0 1.7 8.1 7/20/2011 13:03:20 19.0 1.7 8.1 7/20/2011 13:03:40 19.0 1.7 8.1 7/20/2011 13:04:00 19.0 1.7 8.2 7/20/2011 13:04:20 18.9 1.8 8.3 7/20/201113:04:40 19.0 1.7 8.5 7/20/2011 13:05:00 19.0 1.7 8.5 7/20/2011 13:05:20 16.8 1.6 8.5 7/20/2011 13:05:40 0.9 0.4 7.6 7/20/201113:06:00 0.1 0.2 4.8 7/20/2011 13:06:20 0.0 0.2 2.1 System Bias Check 7/20/2011 13:06:40 0.0 0.2 1.4 System Bias Check 7/20/2011 13:07:00 0.0 0.1 1.3 System Bias Check 7/20/2011 13:07:20 0.0 0.1 1.3 System Bias Check 7/20/2011 13:07:40 0.0 0.1 1.3 System Bias Check 7/20/2011 13:08:00 

### 0.0 0.1 1.4 N2 Zero System Bias Check 7/20/2011 13:08:20 0.0 0.0 

### 1.3 N2 Zero System Bias Check 7/20/2011 13:08:40 0.0 0.0 2.0 System Bias Check 7/20/2011 13:09:00 0.0 0.0 17.5 System Bias Check 7/20/201113:09:20 0.0 0.0 24.0 System Bias Check 7/20/2011 13:09:40 0.0 0.0 25.9 System Bias Check 7/20/201113:10:00 0.0 0.0 26.6 System Bias Check 7/20/2011 13:10:20 0.0 0.0 26.8 System Bias Check 7/20/201113:10:40 0.0 0.0 26.9 System Bias Check 7/20/201113:11:00 0.0 0.0 

### 27.3 S02 27.0 ppm System Bias Check 7/20/201113:11:20 0.0 0.0 27.3 System Bias Check 7/20/201113:11:40 0.3 0.1 29.4 System Bias Check 7/20/201113:12:00 0.0 0.0 17.2 System Bias Check 7/20/201113:12:20 0.0 0.0 6.7 System Bias Check 7/20/201113:12:40 0.0 0.0 4.4 System Bias Check 7/20/201113:13:00 0.0 0.0 3.8 System Bias Check 7/20/201113:13:20 0.0 0.0 3.7 System Bias Check 7/20/201113:13:40 0.0 0.0 3.4 System Bias Check 7/20/201113:14:00 0.0 0.0 3.7 System Bias Check 7/20/201113:14:20 0.0 0.0 3.5 System Bias Check 7/20/201113:14:40 0.0 0.0 3.6 System Bias Check 7/20/201113:15:00 0.0 0.0 3.6 System Bias Check 7/20/201113:15:20 0.0 0.0 3.5 System Bias Check 7/20/201113:15:40 0.0 0.0 3.5 System Bias Check 7/20/2011 13:16:00 3.6 2.5 3.8 System Bias Check 7/20/2011 13:16:20 8.8 8.5 3.7 System Bias Check 7/20/201113:16:40 8.9 8.6 1.9 System Bias Check 7/20/2011 13:17:00 8.9 8.8 0.4 System Bias Check 7/20/2011 13:17:20 8.9 8.8 0.2 System Bias Check 7/20/2011 13:17:40 8.9 8.8 0.2 System Bias Check 7/20/201113:18:00 

### 8.9 8.8 0.2 02 9.0/C02 9.0 System Bias Check 7/20/2011 13:18:20 8.9 8.8 0.3 System Bias Check 7/20/2011 13:18:40 2.2 2.2 0.3 System Bias Check Page 16 of 17 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date 7/20/11 11130/2011 Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### .% CO2

### ,% S02, ppm Notes 7/20/2011 12:57:40 19.0 1.7 7.9 Run 3 7/20/2011 12:58:00 19.0 1.7 8.0 Run 3 7/20/2011 12:58:20 19.0 1.7 8.0 Run 3 7/20/2011 12:58:40 19.0 1.7 8.0 Run 3 7/20/2011 12:59:00 19.0 1.7 8.1 Run 3 7/20/2011 12:59:20 19.0 1.7 8.1 Run 3 7/20/2011 12:59:40 19.0 1.7 8.1 Run 3 7/20/2011 13:00:00 19.0 1.7 8.1 Run 3 7/20/2011 13:00:20 19.0 1.7 8.1 Run 3 7/20/2011 13:00:40 19.0 1.7 8.2 Run 3 7/20/2011 13:01:00 19.0 1.7 8.1 Run 3 7/20/2011 13:01:20 19.0 1.7 8.1 Run 3 7/20/201113:01:40 19.0 1.7 8.1 Run 3 7/20/2011 13:02:00 19.0 1.8 8.0 7/20/2011 13:02:20 19.0 1.7 8.1 7/20/2011 13:02:40 19.0 1.7 8.1 7/20/2011 13:03:00 19.0 1.7 8.1 7/20/2011 13:03:20 19.0 1.7 8.1 7/20/2011 13:03:40 19.0 1.7 8.1 7/20/2011 13:04:00 19.0 1.7 8.2 7/20/2011 13:04:20 18.9 1.8 8.3 7/20/201113:04:40 19.0 1.7 8.5 7/20/2011 13:05:00 19.0 1.7 8.5 7/20/2011 13:05:20 16.8 1.6 8.5 7/20/2011 13:05:40 0.9 0.4 7.6 7/20/201113:06:00 0.1 0.2 4.8 7/20/2011 13:06:20 0.0 0.2 2.1 System Bias Check 7/20/2011 13:06:40 0.0 0.2 1.4 System Bias Check 7/20/2011 13:07:00 0.0 0.1 1.3 System Bias Check 7/20/2011 13:07:20 0.0 0.1 1.3 System Bias Check 7/20/2011 13:07:40 0.0 0.1 1.3 System Bias Check 7/20/2011 13:08:00 

### 0.0 0.1 1.4 N2 Zero System Bias Check 7/20/2011 13:08:20 0.0 0.0 

### 1.3 N2 Zero System Bias Check 7/20/2011 13:08:40 0.0 0.0 2.0 System Bias Check 7/20/2011 13:09:00 0.0 0.0 17.5 System Bias Check 7/20/201113:09:20 0.0 0.0 24.0 System Bias Check 7/20/2011 13:09:40 0.0 0.0 25.9 System Bias Check 7/20/201113:10:00 0.0 0.0 26.6 System Bias Check 7/20/2011 13:10:20 0.0 0.0 26.8 System Bias Check 7/20/201113:10:40 0.0 0.0 26.9 System Bias Check 7/20/201113:11:00 0.0 0.0 

### 27.3 S02 27.0 ppm System Bias Check 7/20/201113:11:20 0.0 0.0 27.3 System Bias Check 7/20/201113:11:40 0.3 0.1 29.4 System Bias Check 7/20/201113:12:00 0.0 0.0 17.2 System Bias Check 7/20/201113:12:20 0.0 0.0 6.7 System Bias Check 7/20/201113:12:40 0.0 0.0 4.4 System Bias Check 7/20/201113:13:00 0.0 0.0 3.8 System Bias Check 7/20/201113:13:20 0.0 0.0 3.7 System Bias Check 7/20/201113:13:40 0.0 0.0 3.4 System Bias Check 7/20/201113:14:00 0.0 0.0 3.7 System Bias Check 7/20/201113:14:20 0.0 0.0 3.5 System Bias Check 7/20/201113:14:40 0.0 0.0 3.6 System Bias Check 7/20/201113:15:00 0.0 0.0 3.6 System Bias Check 7/20/201113:15:20 0.0 0.0 3.5 System Bias Check 7/20/201113:15:40 0.0 0.0 3.5 System Bias Check 7/20/2011 13:16:00 3.6 2.5 3.8 System Bias Check 7/20/2011 13:16:20 8.8 8.5 3.7 System Bias Check 7/20/201113:16:40 8.9 8.6 1.9 System Bias Check 7/20/2011 13:17:00 8.9 8.8 0.4 System Bias Check 7/20/2011 13:17:20 8.9 8.8 0.2 System Bias Check 7/20/2011 13:17:40 8.9 8.8 0.2 System Bias Check 7/20/201113:18:00 

### 8.9 8.8 0.2 02 9.0/C02 9.0 System Bias Check 7/20/2011 13:18:20 8.9 8.8 0.3 System Bias Check 7/20/2011 13:18:40 2.2 2.2 0.3 System Bias Check Page 16 of 17

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 

### Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2 

### ,% S02, ppm Notes 7/201201113:19:00 

### 0.0 0.2 0.3 System Bias Check 7/20/2011 13:19:20 

### 0.0 0.2 0.5 System Bias Check 7/20/201113:19:40 

### 1.9 0.3 0.6 System Bias Check 7/20/2011 13:20:00 

### 0.2 0.1 0.6 System Bias Check 7/20/2011 13:20:20 

### 0.2 0.0 0.6 System Bias Check 7/20/2011 13:20:40 

### 0.3 0.0 0.8 System Bias Check 7/20/2011 

### 13:21:00 0.3 0.0 0.9 System Bias Check 7/20/2011 

### 13:21:20 0.3 0.0 0.9 System Bias Check 7/20/2011 

### 13:21:40 0.2 0.0 0.9 System Bias Check 7/20/2011 13:22:00 

### 0.2 0.0 0.8 System Bias Check 7/20/2011 13:22:20 

### 0.0 0.0 0.8

Page 17 of 17 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date 7/20/11 11/30/2011 

### Virginia. Minnesota Furnace Stack B

TIMESTAMP O2

### ,% CO2 

### ,% S02, ppm Notes 7/201201113:19:00 

### 0.0 0.2 0.3 System Bias Check 7/20/2011 13:19:20 

### 0.0 0.2 0.5 System Bias Check 7/20/201113:19:40 

### 1.9 0.3 0.6 System Bias Check 7/20/2011 13:20:00 

### 0.2 0.1 0.6 System Bias Check 7/20/2011 13:20:20 

### 0.2 0.0 0.6 System Bias Check 7/20/2011 13:20:40 

### 0.3 0.0 0.8 System Bias Check 7/20/2011 

### 13:21:00 0.3 0.0 0.9 System Bias Check 7/20/2011 

### 13:21:20 0.3 0.0 0.9 System Bias Check 7/20/2011 

### 13:21:40 0.2 0.0 0.9 System Bias Check 7/20/2011 13:22:00 

### 0.2 0.0 0.8 System Bias Check 7/20/2011 13:22:20 

### 0.0 0.0 0.8

Page 17 of 17ArcelorMittal Minorca Mine Virginia. Minnesota Average Analyzer Results Run O2

### .%

1 18.1 2 18.2 

### 3 18.1

TIMESTAMP O2

### .% 7/20/20117:15:00 0.0 7/20/20117:15:20 0.0 7/20/20117:15:40 0.0 7/20/20117:16:00 0.0 7/20/20117:16:20 0.0 7/20/20117:16:40 0.0 7/20/20117:17:00 0.0 7/20/20117:17:20 8.6 7/20/20117:17:40 21.8 7/20/20117:18:00 21.9 7/20/20117:18:20 21.9 7/20/20117:18:40 21.9 7/20/20117:19:00 21.9 7/20/20117:19:20 21.9 7/20/20117:19:40 21.9 7/20/20117:20:00 19.7 7/20/20117:20:20 9.1 7/20/20117:20:40 9.0 7/20/20117:21:00 8.4 7/20/20117:21:20 0.5 7/20/20117:21:40 0.0 7/20/20117:22:00 0.0 7/20/20117:22:20 0.0 7/20/20117:22:40 0.0 7/20/20117:23:00 0.0 7/20/20117:23:20 0.0 7/20/20117:23:40 0.0 7/20/20117:24:00 0.0 7/20/20117:24:20 0.0 7/20/20117:24:40 0.1 7/20/20117:25:00 0.0 7/20/20117:25:20 0.0 7/20/20117:25:40 0.0 7/20/20117:26:00 0.9 7/20/20117:26:20 0.0 7/20/20117:26:40 0.0 7/20/20117:27:00 0.0

7/20/20117:57:40 20.8 7/20/20117:58:00 20.8 7/20/20117:58:20 20.8 7/20/20117:58:40 20.8 7/20/20117:59:00 10.1 7/20/20117:59:20 0.1 7/20/20117:59:40 0.0 7/20/2011 8:00:00 0.0 7/20/20118:00:20 0.0 7/20/20118:00:40 0.0 7/20/20118:01:00 0.0 7/20/20118:01:20 1.8 7/20/2011 8:01:40 0.0 7/20/2011 8:02:00 0.0 7/20/2011 8:02:20 0.0 7/20/2011 8:02:40 0.0 7/20/20118:03:00 0.0 Data Logger Output Test Date: 7/20-21/11

Furnace Stack C

CO2 •

### % S02. ppm 2.2 3.7 2.3

- 5.7 2.4 

### 3.6

CO2 •

### % S02. ppm -0.3 -0.4 -0.3 -0.4 -0.3 -0.4 0.0 -0.2 0.0 0.0 0.0 0.0 0.0 0.0 1.7 -0.1 5.5 -0.4 5.5 -0.8 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.3 -0.9 9.1 -1.0 9.1 -0.9 7.9 -0.9 0.1 1.1 0.1 24.2 0.1 42.3 0.1 47.9 0.1 49.9 0.1 51.1 0.0 51.5 0.0 50.9 0.0 50.0 0.0 50.2 0.0 46.8 0.0 29.4 0.0 27.2 0.0 27.1 0.0 26.5 0.0 16.0 0.0 31.6 0.0 41.3

0.1 -0.8 0.1 -0.8 0.1 -0.9 0.1 -1.0 0.1 -0.9 0.1 -0.7 0.0 -0.7 0.0 0.0 0.0 0.4 0.0 0.6 0.0 0.8 0.1 0.8 0.0 10.3 0.1 23.6 0.0 25.6 0.1 26.2 0.1 26.4

Page 1of22 Run Times 1450-1557 1015-1122 1327-1433

Notes Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal N2 Zero Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal 02 21.9/C02 5.5 Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal 02 9.0/C02 9.0 Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal S02 50.2 ppm AnalyzerCal AnalyzerCal Analyzer Cal S02 27.0 ppm Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Barr Engineering 9/10/2011

System Bias Check N2 Zero System Bias Check System Bias Check System Bias Check System Bias Check N2 Zero System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check ArcelorMittal Minorca Mine Virginia. Minnesota Average Analyzer Results Run O2

### .%

1 18.1 2 18.2 

### 3 18.1

TIMESTAMP O2

### .% 7/20/20117:15:00 0.0 7/20/20117:15:20 0.0 7/20/20117:15:40 0.0 7/20/20117:16:00 0.0 7/20/20117:16:20 0.0 7/20/20117:16:40 0.0 7/20/20117:17:00 0.0 7/20/20117:17:20 8.6 7/20/20117:17:40 21.8 7/20/20117:18:00 21.9 7/20/20117:18:20 21.9 7/20/20117:18:40 21.9 7/20/20117:19:00 21.9 7/20/20117:19:20 21.9 7/20/20117:19:40 21.9 7/20/20117:20:00 19.7 7/20/20117:20:20 9.1 7/20/20117:20:40 9.0 7/20/20117:21:00 8.4 7/20/20117:21:20 0.5 7/20/20117:21:40 0.0 7/20/20117:22:00 0.0 7/20/20117:22:20 0.0 7/20/20117:22:40 0.0 7/20/20117:23:00 0.0 7/20/20117:23:20 0.0 7/20/20117:23:40 0.0 7/20/20117:24:00 0.0 7/20/20117:24:20 0.0 7/20/20117:24:40 0.1 7/20/20117:25:00 0.0 7/20/20117:25:20 0.0 7/20/20117:25:40 0.0 7/20/20117:26:00 0.9 7/20/20117:26:20 0.0 7/20/20117:26:40 0.0 7/20/20117:27:00 0.0

7/20/20117:57:40 20.8 7/20/20117:58:00 20.8 7/20/20117:58:20 20.8 7/20/20117:58:40 20.8 7/20/20117:59:00 10.1 7/20/20117:59:20 0.1 7/20/20117:59:40 0.0 7/20/2011 8:00:00 0.0 7/20/20118:00:20 0.0 7/20/20118:00:40 0.0 7/20/20118:01:00 0.0 7/20/20118:01:20 1.8 7/20/2011 8:01:40 0.0 7/20/2011 8:02:00 0.0 7/20/2011 8:02:20 0.0 7/20/2011 8:02:40 0.0 7/20/20118:03:00 0.0 Data Logger Output Test Date: 7/20-21/11

Furnace Stack C

CO2 •

### % S02. ppm 2.2 3.7 2.3

- 5.7 2.4 

### 3.6

CO2 •

### % S02. ppm -0.3 -0.4 -0.3 -0.4 -0.3 -0.4 0.0 -0.2 0.0 0.0 0.0 0.0 0.0 0.0 1.7 -0.1 5.5 -0.4 5.5 -0.8 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.5 -1.0 5.3 -0.9 9.1 -1.0 9.1 -0.9 7.9 -0.9 0.1 1.1 0.1 24.2 0.1 42.3 0.1 47.9 0.1 49.9 0.1 51.1 0.0 51.5 0.0 50.9 0.0 50.0 0.0 50.2 0.0 46.8 0.0 29.4 0.0 27.2 0.0 27.1 0.0 26.5 0.0 16.0 0.0 31.6 0.0 41.3

0.1 -0.8 0.1 -0.8 0.1 -0.9 0.1 -1.0 0.1 -0.9 0.1 -0.7 0.0 -0.7 0.0 0.0 0.0 0.4 0.0 0.6 0.0 0.8 0.1 0.8 0.0 10.3 0.1 23.6 0.0 25.6 0.1 26.2 0.1 26.4

Page 1of22 Run Times 1450-1557 1015-1122 1327-1433

Notes Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal N2 Zero Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal 02 21.9/C02 5.5 Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal 02 9.0/C02 9.0 Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal Analyzer Cal Analyzer Cal Analyzer Cal AnalyzerCal AnalyzerCal S02 50.2 ppm AnalyzerCal AnalyzerCal Analyzer Cal S02 27.0 ppm Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Analyzer Cal Barr Engineering 9/10/2011

System Bias Check N2 Zero System Bias Check System Bias Check System Bias Check System Bias Check N2 Zero System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias CheckArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/20118:03:20 0.0 0.1 26.5 S02 27.0 ppm System Bias Check 7/20/2011 8:03:40 3.0 0.1 29.4 System Bias Check 7/20/20118:04:00 0.1 0.1 20.9 System Bias Check 7/20/2011 8:04:20 0.0 0.1 6.2 System Bias Check 7/20/2011 8:04:40 0.0 0.1 4.5 System Bias Check 7/20/2011 8:05:00 0.0 0.1 4.2 System Bias Check 7/20/2011 8:05:20 0.0 0.1 4.3 System Bias Check 7/20/20118:05:40 0.0 0.1 4.3 System Bias Check 7/20/20118:06:00 0.0 0.1 4.0 System Bias Check 7/20/20118:06:20 0.0 0.1 4.2 System Bias Check 7/20/20118:06:40 7.1 0.1 4.1 System Bias Check 7/20/20118:07:00 11.0 2.4 3.1 System Bias Check 7/20/20118:07:20 9.0 8.8 2.1 System Bias Check 7/20/20118:07:40 8.9 8.9 0.8 System Bias Check 7/20/20118:08:00 8.9 9.0 0.1 System Bias Check 7/20/20118:08:20 8.9 9.0 -0.1 System Bias Check 7/20/2011 8:08:40 8.9 9.0 -0.1 02 9.0/C029.0 System Bias Check 7/20/2011 8:09:00 8.9 9.0 -0.1 System Bias Check 7/20/2011 8:09:20 17.7 2.6 0.8 System Bias Check 7/20/2011 8:09:40 19.1 1.8 4.4 Standby In Stack

7/20/201113:48:40 18.2 2.1 3.6 Standby In Stack 7/20/201114:44:40 18.2 2.2 1.8 Standby In Stack 7/20/201114:45:00 18.2 2.2 2.4 Standby In Stack 7/20/201114:45:20 18.2 2.2 2.5 Standby In Stack 7/20/201114:45:40 18.2 2.2 2.5 Standby In Stack 7/20/201114:46:00 18.2 2.2 2.5 Standby In Stack 7/20/201114:46:20 18.2 2.2 2.6 Standby In Stack 7/20/201114:46:40 18.2 2.2 2.6 Standby In Stack 7/20/201114:47:00 18.2 2.2 2.6 Standby In Stack 7/20/201114:47:20 18.2 2.2 2.6 Standby In Stack 7/20/201114:47:40 18.2 2.2 2.5 Standby In Stack 7/20/201114:48:00 18.2 2.2 2.4 Standby In Stack 7/20/201114:48:20 18.2 2.2 2.4 Standby In Stack 7/20/201114:48:40 18.2 2.2 2.3 Standby In Stack 7/20/201114:49:00 18.2 2.2 2.3 Standby In Stack 7/20/201114:49:20 18.2 2.2 2.4 Standby In Stack 7/20/201114:49:40 18.2 2.2 2.4 Standby In Stack 7/20/201114:50:00 18.2 2.2 2.4 Standby In Stack 7/20/201114:50:20 18.2 2.2 2.4 Run 1 7/20/201114:50:40 18.2 2.2 2.4 Run 1 7/20/201114:51:00 18.2 2.2 2.5 Run 1 7/20/201114:51:20 18.2 2.2 2.5 Run 1 7/20/201114:51:40 18.2 2.2 2.5 Run 1 7/20/201114:52:00 18.2 2.2 2.5 Run 1 7/20/201114:52:20 18.2 2.2 2.5 Run 1 7/20/201114:52:40 18.2 2.2 2.5 Run 1 7/20/201114:53:00 18.2 2.2 2.5 Run 1 7/20/201114:53:20 18.2 2.2 2.5 Run 1 7/20/201114:53:40 18.2 2.2 2.4 Run 1 7/20/201114:54:00 18.2 2.2 2.4 Run 1 7/20/201114:54:20 18.2 2.2 2.4 Run 1 7/20/201114:54:40 18.2 2.2 2.4 Run 1 7/20/201114:55:00 18.2 2.2 2.5 Run 1 7/20/201114:55:20 18.2 2.2 2.5 Run 1 7/20/201114:55:40 18.2 2.2 2.4 Run 1 7/20/201114:56:00 18.2 2.2 2.5 Run 1 7/20/201114:56:20 18.2 2.2 2.6 Run 1 7/20/201114:56:40 18.2 2.2 2.6 Run 1
Page 20f22 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/20/20118:03:20 0.0 0.1 26.5 S02 27.0 ppm System Bias Check 7/20/2011 8:03:40 3.0 0.1 29.4 System Bias Check 7/20/20118:04:00 0.1 0.1 20.9 System Bias Check 7/20/2011 8:04:20 0.0 0.1 6.2 System Bias Check 7/20/2011 8:04:40 0.0 0.1 4.5 System Bias Check 7/20/2011 8:05:00 0.0 0.1 4.2 System Bias Check 7/20/2011 8:05:20 0.0 0.1 4.3 System Bias Check 7/20/20118:05:40 0.0 0.1 4.3 System Bias Check 7/20/20118:06:00 0.0 0.1 4.0 System Bias Check 7/20/20118:06:20 0.0 0.1 4.2 System Bias Check 7/20/20118:06:40 7.1 0.1 4.1 System Bias Check 7/20/20118:07:00 11.0 2.4 3.1 System Bias Check 7/20/20118:07:20 9.0 8.8 2.1 System Bias Check 7/20/20118:07:40 8.9 8.9 0.8 System Bias Check 7/20/20118:08:00 8.9 9.0 0.1 System Bias Check 7/20/20118:08:20 8.9 9.0 -0.1 System Bias Check 7/20/2011 8:08:40 8.9 9.0 -0.1 02 9.0/C029.0 System Bias Check 7/20/2011 8:09:00 8.9 9.0 -0.1 System Bias Check 7/20/2011 8:09:20 17.7 2.6 0.8 System Bias Check 7/20/2011 8:09:40 19.1 1.8 4.4 Standby In Stack

7/20/201113:48:40 18.2 2.1 3.6 Standby In Stack 7/20/201114:44:40 18.2 2.2 1.8 Standby In Stack 7/20/201114:45:00 18.2 2.2 2.4 Standby In Stack 7/20/201114:45:20 18.2 2.2 2.5 Standby In Stack 7/20/201114:45:40 18.2 2.2 2.5 Standby In Stack 7/20/201114:46:00 18.2 2.2 2.5 Standby In Stack 7/20/201114:46:20 18.2 2.2 2.6 Standby In Stack 7/20/201114:46:40 18.2 2.2 2.6 Standby In Stack 7/20/201114:47:00 18.2 2.2 2.6 Standby In Stack 7/20/201114:47:20 18.2 2.2 2.6 Standby In Stack 7/20/201114:47:40 18.2 2.2 2.5 Standby In Stack 7/20/201114:48:00 18.2 2.2 2.4 Standby In Stack 7/20/201114:48:20 18.2 2.2 2.4 Standby In Stack 7/20/201114:48:40 18.2 2.2 2.3 Standby In Stack 7/20/201114:49:00 18.2 2.2 2.3 Standby In Stack 7/20/201114:49:20 18.2 2.2 2.4 Standby In Stack 7/20/201114:49:40 18.2 2.2 2.4 Standby In Stack 7/20/201114:50:00 18.2 2.2 2.4 Standby In Stack 7/20/201114:50:20 18.2 2.2 2.4 Run 1 7/20/201114:50:40 18.2 2.2 2.4 Run 1 7/20/201114:51:00 18.2 2.2 2.5 Run 1 7/20/201114:51:20 18.2 2.2 2.5 Run 1 7/20/201114:51:40 18.2 2.2 2.5 Run 1 7/20/201114:52:00 18.2 2.2 2.5 Run 1 7/20/201114:52:20 18.2 2.2 2.5 Run 1 7/20/201114:52:40 18.2 2.2 2.5 Run 1 7/20/201114:53:00 18.2 2.2 2.5 Run 1 7/20/201114:53:20 18.2 2.2 2.5 Run 1 7/20/201114:53:40 18.2 2.2 2.4 Run 1 7/20/201114:54:00 18.2 2.2 2.4 Run 1 7/20/201114:54:20 18.2 2.2 2.4 Run 1 7/20/201114:54:40 18.2 2.2 2.4 Run 1 7/20/201114:55:00 18.2 2.2 2.5 Run 1 7/20/201114:55:20 18.2 2.2 2.5 Run 1 7/20/201114:55:40 18.2 2.2 2.4 Run 1 7/20/201114:56:00 18.2 2.2 2.5 Run 1 7/20/201114:56:20 18.2 2.2 2.6 Run 1 7/20/201114:56:40 18.2 2.2 2.6 Run 1
Page 20f22ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/20/201114:57:00 18.2 2.2 2.7 Run 1 7/20/201114:57:20 18.2 2.2 2.6 Run 1 7/20/201114:57:40 18.2 2.2 2.6 Run 1 7/20/201114:58:00 18.2 2.2 2.5 Run 1 7/20/2011 14:58:20 18.2 2.2 2.6 Run 1 7/20/201114:58:40 18.2 2.2 2.6 Run 1 7/20/201114:59:00 18.2 2.2 2.6 Run 1 7/20/201114:59:20 18.2 2.2 2.5 Run 1 7/20/201114:59:40 18.2 2.2 2.5 Run 1 7/20/201115:00:00 18.2 2.2 2.6 Run 1 7/20/201115:00:20 18.2 2.2 2.5 Run 1 7/20/201115:00:40 18.2 2.2 2.6 Run 1 7/20/201115:01:00 18.2 2.2 2.6 Run 1 7/20/201115:01:20 18.2 2.2 2.6 Run 1 7/20/201115:01:40 18.2 2.2 2.6 Run 1 7/20/201115:02:00 18.2 2.2 2.7 Run 1 7/20/201115:02:20 18.2 2.2 2.7 Run 1 7/20/201115:02:40 18.2 2.2 2.8 Run 1 7/20/201115:03:00 18.2 2.2 2.9 Run 1 7/20/201115:03:20 18.2 2.2 2.8 Run 1 7/20/201115:03:40 18.2 2.2 2.8 Run 1 7/20/201115:04:00 18.2 2.2 3.0 Run 1 7/20/201115:04:20 18.2 2.2 3.1 Run 1 7/20/201115:04:40 18.2 2.2 3.2 Run 1 7/20/201115:05:00 18.2 2.2 3.2 Run 1 7/20/201115:05:20 18.2 2.2 3.2 Run 1 7/20/201115:05:40 18.2 2.2 3.3 Run 1 7/20/201115:06:00 18.2 2.2 3.3 Run 1 7/20/201115:06:20 18.2 2.2 3.2 Run 1 7/20/201115:06:40 18.2 2.2 3.1 Run 1 7/20/201115:07:00 18.2 2.2 3.1 Run 1 7/20/201115:07:20 18.2 2.2 3.1 Run 1 7/20/201115:07:40 18.2 2.2 3.2 Run 1 7/20/201115:08:00 18.2 2.2 3.2 Run 1 7/20/201115:08:20 18.2 2.3 3.2 Run 1 7/20/201115:08:40 18.2 2.2 3.2 Run 1 7/20/201115:09:00 18.2 2.2 3.2 Run 1 7/20/201115:09:20 18.2 2.2 3.1 Run 1 7/20/201115:09:40 18.2 2.2 3.1 Run 1 7/20/201115:10:00 18.2 2.2 3.1 Run 1 7/20/201115:10:20 18.1 2.3 3.2 Run 1 7/20/201115:10:40 18.2 2.3 3.2 Run 1 7/20/201115:11:00 18.2 2.3 3.3 Run 1 7/20/201115:11:20 18.2 2.3 3.3 Run 1 7/20/201115:11:40 18.1 2.3 3.2 Run 1 7/20/201115:12:00 18.2 2.3 3.3 Run 1 7/20/201115:12:20 18.1 2.3 3.3 Run 1 7/20/201115:12:40 18.1 2.3 3.3 Run 1 7/20/201115:13:00 18.1 2.3 3.2 Run 1 7/20/201115:13:20 18.1 2.3 3.3 Run 1 7/20/201115:13:40 18.1 2.3 3.3 Run 1 7/20/201115:14:00 18.1 2.3 3.4 Run 1 7/20/201115:14:20 18.1 2.3 3.4 Run 1 7/20/201115:14:40 18.1 2.3 3.4 Run 1 7/20/201115:15:00 18.1 2.3 3.4 Run 1 7/20/201115:15:20 18.1 2.3 3.3 Run 1 7/20/201115:15:40 18.1 2.3 3.3 Run 1 7/20/201115:16:00 18.1 2.3 3.3 Run 1 7/20/201115:16:20 18.1 2.3 3.3 Run 1 7/20/201115:16:40 18.1 2.3 3.3 Run 1 7/20/201115:17:00 18.1 2.3 3.4 Run 1

Page 30f22 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/20/201114:57:00 18.2 2.2 2.7 Run 1 7/20/201114:57:20 18.2 2.2 2.6 Run 1 7/20/201114:57:40 18.2 2.2 2.6 Run 1 7/20/201114:58:00 18.2 2.2 2.5 Run 1 7/20/2011 14:58:20 18.2 2.2 2.6 Run 1 7/20/201114:58:40 18.2 2.2 2.6 Run 1 7/20/201114:59:00 18.2 2.2 2.6 Run 1 7/20/201114:59:20 18.2 2.2 2.5 Run 1 7/20/201114:59:40 18.2 2.2 2.5 Run 1 7/20/201115:00:00 18.2 2.2 2.6 Run 1 7/20/201115:00:20 18.2 2.2 2.5 Run 1 7/20/201115:00:40 18.2 2.2 2.6 Run 1 7/20/201115:01:00 18.2 2.2 2.6 Run 1 7/20/201115:01:20 18.2 2.2 2.6 Run 1 7/20/201115:01:40 18.2 2.2 2.6 Run 1 7/20/201115:02:00 18.2 2.2 2.7 Run 1 7/20/201115:02:20 18.2 2.2 2.7 Run 1 7/20/201115:02:40 18.2 2.2 2.8 Run 1 7/20/201115:03:00 18.2 2.2 2.9 Run 1 7/20/201115:03:20 18.2 2.2 2.8 Run 1 7/20/201115:03:40 18.2 2.2 2.8 Run 1 7/20/201115:04:00 18.2 2.2 3.0 Run 1 7/20/201115:04:20 18.2 2.2 3.1 Run 1 7/20/201115:04:40 18.2 2.2 3.2 Run 1 7/20/201115:05:00 18.2 2.2 3.2 Run 1 7/20/201115:05:20 18.2 2.2 3.2 Run 1 7/20/201115:05:40 18.2 2.2 3.3 Run 1 7/20/201115:06:00 18.2 2.2 3.3 Run 1 7/20/201115:06:20 18.2 2.2 3.2 Run 1 7/20/201115:06:40 18.2 2.2 3.1 Run 1 7/20/201115:07:00 18.2 2.2 3.1 Run 1 7/20/201115:07:20 18.2 2.2 3.1 Run 1 7/20/201115:07:40 18.2 2.2 3.2 Run 1 7/20/201115:08:00 18.2 2.2 3.2 Run 1 7/20/201115:08:20 18.2 2.3 3.2 Run 1 7/20/201115:08:40 18.2 2.2 3.2 Run 1 7/20/201115:09:00 18.2 2.2 3.2 Run 1 7/20/201115:09:20 18.2 2.2 3.1 Run 1 7/20/201115:09:40 18.2 2.2 3.1 Run 1 7/20/201115:10:00 18.2 2.2 3.1 Run 1 7/20/201115:10:20 18.1 2.3 3.2 Run 1 7/20/201115:10:40 18.2 2.3 3.2 Run 1 7/20/201115:11:00 18.2 2.3 3.3 Run 1 7/20/201115:11:20 18.2 2.3 3.3 Run 1 7/20/201115:11:40 18.1 2.3 3.2 Run 1 7/20/201115:12:00 18.2 2.3 3.3 Run 1 7/20/201115:12:20 18.1 2.3 3.3 Run 1 7/20/201115:12:40 18.1 2.3 3.3 Run 1 7/20/201115:13:00 18.1 2.3 3.2 Run 1 7/20/201115:13:20 18.1 2.3 3.3 Run 1 7/20/201115:13:40 18.1 2.3 3.3 Run 1 7/20/201115:14:00 18.1 2.3 3.4 Run 1 7/20/201115:14:20 18.1 2.3 3.4 Run 1 7/20/201115:14:40 18.1 2.3 3.4 Run 1 7/20/201115:15:00 18.1 2.3 3.4 Run 1 7/20/201115:15:20 18.1 2.3 3.3 Run 1 7/20/201115:15:40 18.1 2.3 3.3 Run 1 7/20/201115:16:00 18.1 2.3 3.3 Run 1 7/20/201115:16:20 18.1 2.3 3.3 Run 1 7/20/201115:16:40 18.1 2.3 3.3 Run 1 7/20/201115:17:00 18.1 2.3 3.4 Run 1

Page 30f22ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Fumace Stack C

TIMESTAMP 

### O2 •

### % CO2 •

### % S02. ppm Notes 7/20/201115:17:20 18.1 2.3 3.5 Run 1 7/20/201115:17:40 18.1 2.3 3.5 Run 1 7/20/201115:18:00 18.1 2.3 3.5 Run 1 7/20/201115:18:20 18.1 2.3 3.6 Run 1 7/20/201115:18:40 18.0 2.3 3.6 Run 1 7/20/201115:19:00 18.0 2.4 3.6 Run 1 7/20/201115:19:20 18.0 2.4 3.7 Run 1 7/20/201115:19:40 18.0 2.4 3.7 Run 1 7/20/201115:20:00 18.0 2.4 3.6 Run 1 7/20/201115:20:20 18.0 2.4 3.6 Run 1 7/20/201115:20:40 18.0 2.4 3.6 Run 1 7/20/201115:21:00 18.0 2.4 3.8 Run 1 7/20/201115:21:20 18.0 2.4 3.7 Run 1 7/20/201115:21:40 18.0 2.4 3.7 Run 1 7/20/201115:22:00 18.0 2.4 3.8 Run 1 7/20/201115:22:20 18.0 2.4 3.7 Run 1 7/20/201115:22:40 18.0 2.4 3.8 Run 1 7/20/201115:23:00 18.0 2.4 3.8 Run 1 7/20/201115:23:20 18.0 2.4 3.8 Run 1 7/20/201115:23:40 18.0 2.3 3.9 Run 1 7/20/201115:24:00 18.0 2.3 3.9 Run 1 7/20/201115:24:20 18.0 2.3 3.9 Run 1 7/20/201115:24:40 18.0 2.3 4.1 Run 1 7/20/201115:25:00 18.0 2.3 4.1 Run 1 7/20/201115:25:20 18.0 2.3 4.1 Run 1 7/20/201115:25:40 18.0 2.3 4.1 Run 1 7/20/201115:26:00 18.0 2.3 4.2 Run 1 7/20/201115:26:20 18.0 2.3 4.4 Run 1 7/20/201115:26:40 18.0 2.3 4.5 Run 1 7/20/201115:27:00 18.0 2.3 4.6 Run 1 7/20/201115:27:20 18.0 2.3 4.6 Run 1 7/20/201115:27:40 18.0 2.3 4.6 Run 1 7/20/201115:28:00 18.0 2.3 4.6 Run 1 7/20/201115:28:20 18.1 2.2 4.6 Run 1 7/20/201115:28:40 18.0 2.3 4.6 Run 1 7/20/201115:29:00 18.0 2.3 4.7 Run 1 7/20/201115:29:20 18.0 2.3 4.8 Run 1 7/20/201115:29:40 18.0 2.3 4.8 Run 1 7/20/201115:30:00 18.0 2.3 4.6 Run 1 7/20/201115:30:20 18.0 2.3 4.5 Run 1 7/20/201115:30:40 18.0 2.3 4.4 Run 1 7/20/201115:31:00 18.0 2.3 4.3 Run 1 7/20/201115:31:20 18.0 2.3 4.2 Run 1 7/20/201115:31:40 18.0 2.3 4.2 Run 1 7/20/201115:32:00 18.0 2.3 4.2 Run 1 7/20/201115:32:20 18.0 2.3 4.1 Run 1 7/20/201115:32:40 18.0 2.3 4.0 Run 1 7/20/201115:33:00 18.0 2.3 3.9 Run 1 7/20/201115:33:20 17.9 2.3 3.8 Run 1 7/20/201115:33:40 18.0 2.3 3.8 Run 1 7/20/201115:34:00 18.0 2.3 3.8 Run 1 7/20/201115:34:20 18.0 2.3 3.7 Run 1 7/20/201115:34:40 18.0 2.3 3.6 Run 1 7/20/201115:35:00 18.0 2.3 3.6 Run 1 7/20/201115:35:20 18.0 2.3 3.7 Run 1 7/20/201115:35:40 18.0 2.3 3.8 Run 1 7/20/201115:36:00 18.0 2.3 3.9 Run 1 7/20/201115:36:20 18.0 2.3 4.0 Run 1 7/20/201115:36:40 18.0 2.3 4.1 Run 1 7/20/201115:37:00 18.0 2.3 4.3 Run 1 7/20/201115:37:20 18.1 2.2 4.3 Run 1

Page 4of22 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Fumace Stack C

TIMESTAMP 

### O2 •

### % CO2 •

### % S02. ppm Notes 7/20/201115:17:20 18.1 2.3 3.5 Run 1 7/20/201115:17:40 18.1 2.3 3.5 Run 1 7/20/201115:18:00 18.1 2.3 3.5 Run 1 7/20/201115:18:20 18.1 2.3 3.6 Run 1 7/20/201115:18:40 18.0 2.3 3.6 Run 1 7/20/201115:19:00 18.0 2.4 3.6 Run 1 7/20/201115:19:20 18.0 2.4 3.7 Run 1 7/20/201115:19:40 18.0 2.4 3.7 Run 1 7/20/201115:20:00 18.0 2.4 3.6 Run 1 7/20/201115:20:20 18.0 2.4 3.6 Run 1 7/20/201115:20:40 18.0 2.4 3.6 Run 1 7/20/201115:21:00 18.0 2.4 3.8 Run 1 7/20/201115:21:20 18.0 2.4 3.7 Run 1 7/20/201115:21:40 18.0 2.4 3.7 Run 1 7/20/201115:22:00 18.0 2.4 3.8 Run 1 7/20/201115:22:20 18.0 2.4 3.7 Run 1 7/20/201115:22:40 18.0 2.4 3.8 Run 1 7/20/201115:23:00 18.0 2.4 3.8 Run 1 7/20/201115:23:20 18.0 2.4 3.8 Run 1 7/20/201115:23:40 18.0 2.3 3.9 Run 1 7/20/201115:24:00 18.0 2.3 3.9 Run 1 7/20/201115:24:20 18.0 2.3 3.9 Run 1 7/20/201115:24:40 18.0 2.3 4.1 Run 1 7/20/201115:25:00 18.0 2.3 4.1 Run 1 7/20/201115:25:20 18.0 2.3 4.1 Run 1 7/20/201115:25:40 18.0 2.3 4.1 Run 1 7/20/201115:26:00 18.0 2.3 4.2 Run 1 7/20/201115:26:20 18.0 2.3 4.4 Run 1 7/20/201115:26:40 18.0 2.3 4.5 Run 1 7/20/201115:27:00 18.0 2.3 4.6 Run 1 7/20/201115:27:20 18.0 2.3 4.6 Run 1 7/20/201115:27:40 18.0 2.3 4.6 Run 1 7/20/201115:28:00 18.0 2.3 4.6 Run 1 7/20/201115:28:20 18.1 2.2 4.6 Run 1 7/20/201115:28:40 18.0 2.3 4.6 Run 1 7/20/201115:29:00 18.0 2.3 4.7 Run 1 7/20/201115:29:20 18.0 2.3 4.8 Run 1 7/20/201115:29:40 18.0 2.3 4.8 Run 1 7/20/201115:30:00 18.0 2.3 4.6 Run 1 7/20/201115:30:20 18.0 2.3 4.5 Run 1 7/20/201115:30:40 18.0 2.3 4.4 Run 1 7/20/201115:31:00 18.0 2.3 4.3 Run 1 7/20/201115:31:20 18.0 2.3 4.2 Run 1 7/20/201115:31:40 18.0 2.3 4.2 Run 1 7/20/201115:32:00 18.0 2.3 4.2 Run 1 7/20/201115:32:20 18.0 2.3 4.1 Run 1 7/20/201115:32:40 18.0 2.3 4.0 Run 1 7/20/201115:33:00 18.0 2.3 3.9 Run 1 7/20/201115:33:20 17.9 2.3 3.8 Run 1 7/20/201115:33:40 18.0 2.3 3.8 Run 1 7/20/201115:34:00 18.0 2.3 3.8 Run 1 7/20/201115:34:20 18.0 2.3 3.7 Run 1 7/20/201115:34:40 18.0 2.3 3.6 Run 1 7/20/201115:35:00 18.0 2.3 3.6 Run 1 7/20/201115:35:20 18.0 2.3 3.7 Run 1 7/20/201115:35:40 18.0 2.3 3.8 Run 1 7/20/201115:36:00 18.0 2.3 3.9 Run 1 7/20/201115:36:20 18.0 2.3 4.0 Run 1 7/20/201115:36:40 18.0 2.3 4.1 Run 1 7/20/201115:37:00 18.0 2.3 4.3 Run 1 7/20/201115:37:20 18.1 2.2 4.3 Run 1

Page 4of22ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/20/201115:37:40 18.0 2.2 4.4 Run 1 7/20/201115:38:00 18.0 2.3 4.4 Run 1 7/20/201115:38:20 18.0 2.2 4.5 Run 1 7/20/201115:38:40 18.1 2.2 4.6 Run 1 7/20/201115:39:00 18.1 2.2 4.6 Run 1 7/20/201115:39:20 18.1 2.2 4.6 Run 1 7/20/201115:39:40 18.1 2.2 4.6 Run 1 7/20/201115:40:00 18.1 2.2 4.6 Run 1 7/20/201115:40:20 18.1 2.2 4.6 Run 1 7/20/201115:40:40 18.1 2.2 4.7 Run 1 7/20/201115:41:00 18.1 2.2 4.8 Run 1 7/20/201115:41:20 18.1 2.2 4.7 Run 1 7/20/201115:41:40 18.1 2.2 4.7 Run 1 7/20/201115:42:00 18.1 2.2 4.7 Run 1 7/20/201115:42:20 18.1 2.2 4.7 Run 1 7/20/201115:42:40 18.1 2.2 4.6 Run 1 7/20/201115:43:00 18.1 2.2 4.5 Run 1 7/20/201115:43:20 18.1 2.2 4.5 Run 1 7/20/201115:43:40 18.1 2.2 4.6 Run 1 7/20/201115:44:00 18.1 2.2 4.6 Run 1 7/20/201115:44:20 18.1 2.2 4.6 Run 1 7/20/201115:44:40 18.1 2.2 4.6 Run 1 7/20/201115:45:00 18.1 2.2 4.5 Run 1 7/20/201115:45:20 18.1 2.2 4.4 Run 1 7/20/201115:45:40 18.1 2.2 4.4 Run 1 7/20/201115:46:00 18.1 2.2 4.4 Run 1 7/20/201115:46:20 18.1 2.2 4.4 Run 1 7/20/201115:46:40 18.1 2.2 4.4 Run 1 7/20/201115:47:00 18.1 2.2 4.4 Run 1 7/20/201115:47:20 18.1 2.2 4.4 Run 1 7/20/201115:47:40 18.2 2.2 4.4 Run 1 7/20/201115:48:00 18.1 2.2 4.5 Run 1 7/20/201115:48:20 18.1 2.2 4.5 Run 1 7/20/201115:48:40 18.1 2.2 4.5 Run 1 7/20/201115:49:00 18.2 2.2 4.5 Run 1 7/20/201115:49:20 18.1 2.2 4.5 Run 1 7/20/201115:49:40 18.2 2.2 4.5 Run 1 7/20/201115:50:00 18.2 2.2 4.5 Run 1 7/20/201115:50:20 18.2 2.1 4.6 Run 1 7/20/201115:50:40 18.2 2.1 4.6 Run 1 7/20/201115:51:00 18.2 2.2 4.7 Run 1 7/20/201115:51:20 18.2 2.2 4.7 Run 1 7/20/201115:51:40 18.2 2.1 4.7 Run 1 7/20/201115:52:00 18.2 2.2 4.6 Run 1 7/20/201115:52:20 18.2 2.1 4.6 Run 1 7/20/201115:52:40 18.2 2.1 4.6 Run 1 7/20/201115:53:00 18.2 2.1 4.6 Run 1 7/20/201115:53:20 18.2 2.1 4.5 Run 1 7/20/201115:53:40 18.2 2.2 4.5 Run 1 7/20/201115:54:00 18.2 2.2 4.4 Run 1 7/20/201115:54:20 18.2 2.2 4.3 Run 1 7/20/201115:54:40 18.2 2.2 4.3 Run 1 7/20/201115:55:00 18.2 2.2 4.4 Run 1 7/20/201115:55:20 18.2 2.2 4.4 Run 1 7/20/201115:55:40 18.2 2.2 4.3 Run 1 7/20/201115:56:00 18.2 2.2 4.2 Run 1 7/20/201115:56:20 18.2 2.2 4.2 Run 1 7/20/201115:56:40 18.2 2.2 4.2 Run 1 7/20/201115:57:00 18.2 2.2 4.2 Bias DriftCheck 7/20/201115:57:20 18.2 2.2 4.3 Bias DriftCheck 7/20/201115:57:40 18.2 2.2 4.2 Bias Drift Check

Page 5of22 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/20/201115:37:40 18.0 2.2 4.4 Run 1 7/20/201115:38:00 18.0 2.3 4.4 Run 1 7/20/201115:38:20 18.0 2.2 4.5 Run 1 7/20/201115:38:40 18.1 2.2 4.6 Run 1 7/20/201115:39:00 18.1 2.2 4.6 Run 1 7/20/201115:39:20 18.1 2.2 4.6 Run 1 7/20/201115:39:40 18.1 2.2 4.6 Run 1 7/20/201115:40:00 18.1 2.2 4.6 Run 1 7/20/201115:40:20 18.1 2.2 4.6 Run 1 7/20/201115:40:40 18.1 2.2 4.7 Run 1 7/20/201115:41:00 18.1 2.2 4.8 Run 1 7/20/201115:41:20 18.1 2.2 4.7 Run 1 7/20/201115:41:40 18.1 2.2 4.7 Run 1 7/20/201115:42:00 18.1 2.2 4.7 Run 1 7/20/201115:42:20 18.1 2.2 4.7 Run 1 7/20/201115:42:40 18.1 2.2 4.6 Run 1 7/20/201115:43:00 18.1 2.2 4.5 Run 1 7/20/201115:43:20 18.1 2.2 4.5 Run 1 7/20/201115:43:40 18.1 2.2 4.6 Run 1 7/20/201115:44:00 18.1 2.2 4.6 Run 1 7/20/201115:44:20 18.1 2.2 4.6 Run 1 7/20/201115:44:40 18.1 2.2 4.6 Run 1 7/20/201115:45:00 18.1 2.2 4.5 Run 1 7/20/201115:45:20 18.1 2.2 4.4 Run 1 7/20/201115:45:40 18.1 2.2 4.4 Run 1 7/20/201115:46:00 18.1 2.2 4.4 Run 1 7/20/201115:46:20 18.1 2.2 4.4 Run 1 7/20/201115:46:40 18.1 2.2 4.4 Run 1 7/20/201115:47:00 18.1 2.2 4.4 Run 1 7/20/201115:47:20 18.1 2.2 4.4 Run 1 7/20/201115:47:40 18.2 2.2 4.4 Run 1 7/20/201115:48:00 18.1 2.2 4.5 Run 1 7/20/201115:48:20 18.1 2.2 4.5 Run 1 7/20/201115:48:40 18.1 2.2 4.5 Run 1 7/20/201115:49:00 18.2 2.2 4.5 Run 1 7/20/201115:49:20 18.1 2.2 4.5 Run 1 7/20/201115:49:40 18.2 2.2 4.5 Run 1 7/20/201115:50:00 18.2 2.2 4.5 Run 1 7/20/201115:50:20 18.2 2.1 4.6 Run 1 7/20/201115:50:40 18.2 2.1 4.6 Run 1 7/20/201115:51:00 18.2 2.2 4.7 Run 1 7/20/201115:51:20 18.2 2.2 4.7 Run 1 7/20/201115:51:40 18.2 2.1 4.7 Run 1 7/20/201115:52:00 18.2 2.2 4.6 Run 1 7/20/201115:52:20 18.2 2.1 4.6 Run 1 7/20/201115:52:40 18.2 2.1 4.6 Run 1 7/20/201115:53:00 18.2 2.1 4.6 Run 1 7/20/201115:53:20 18.2 2.1 4.5 Run 1 7/20/201115:53:40 18.2 2.2 4.5 Run 1 7/20/201115:54:00 18.2 2.2 4.4 Run 1 7/20/201115:54:20 18.2 2.2 4.3 Run 1 7/20/201115:54:40 18.2 2.2 4.3 Run 1 7/20/201115:55:00 18.2 2.2 4.4 Run 1 7/20/201115:55:20 18.2 2.2 4.4 Run 1 7/20/201115:55:40 18.2 2.2 4.3 Run 1 7/20/201115:56:00 18.2 2.2 4.2 Run 1 7/20/201115:56:20 18.2 2.2 4.2 Run 1 7/20/201115:56:40 18.2 2.2 4.2 Run 1 7/20/201115:57:00 18.2 2.2 4.2 Bias DriftCheck 7/20/201115:57:20 18.2 2.2 4.3 Bias DriftCheck 7/20/201115:57:40 18.2 2.2 4.2 Bias Drift Check

Page 5of22ArcelorMitlal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2

### ,% 502, ppm Notes 7/20/201115:58:00 18.2 2.2 4.1 Bias Drift Check 7/20/201115:58:20 18.2 2.2 4.1 Bias Drift Check 7/20/201115:58:40 18.2 2.2 4.2 Bias Drift Check 7/20/201115:59:00 18.2 2.2 4.3 Bias Drift Check 7/20/201115:59:20 18.2 2.2 4.2 Bias Drift Check 7/20/201115:59:40 18.2 2.2 4.4 Bias DriftCheck 7/20/201116:00:00 18.1 2.2 4.5 Bias DriftCheck 7/20/201116:00:20 18.2 2.2 4.5 Bias Drift Check 7/20/2011 16:00:40 18.2 2.2 4.6 Bias Drift Check 7/20/201116:01:00 8.0 1.0 4.9 Bias Drift Check 7/20/201116:01:20 0.1 0.1 5.8 Bias Drift Check 7/20/201116:01:40 0.1 0.1 4.6 Bias Drift Check 7/20/201116:02:00 0.1 0.1 2.3 Bias Drift Check 7/20/201116:02:20 0.1 0.0 1.7 Bias Drift Check 7/20/201116:02:40 0.0 0.0 1.7 Bias Drift Check 7/20/201116:03:00 0.0 0.0 1.7 Bias Drift Check 7/20/201116:03:20 0.0 0.0 1.6 Bias Drift Check 7/20/201116:03:40 0.0 0.0 1.5 N2Zero Bias DriftCheck 7/20/2011 16:04:00 0.0 0.0 1.5 Bias DriftCheck 7/20/201116:04:20 0.0 0.0 1.5 Bias DriftCheck 7/20/201116:04:40 0.0 0.0 1.5 Bias Drift Check 7/20/201116:05:00 0.0 0.0 1.5 Bias Drift Check 7/20/201116:05:20 0.0 0.0 1.4 Bias Drift Check 7/20/201116:05:40 4.7 0.6 1.5 Bias Drift Check 7/20/201116:06:00 5.7 5.0 1.8 Bias Drift Check 7/20/201116:06:20 8.8 8.6 1.6 Bias Drift Check 7/20/201116:06:40 8.9 8.9 0.7 Bias Drift Check 7/20/201116:07:00 8.9 8.9 0.3 Bias DriftCheck 7/20/201116:07:20 8.9 9.0 0.3 02 9.0/C02 9.0 Bias Drift Check 7/20/201116:07:40 8.9 9.0 0.3 Bias Drift Check 7/20/201116:08:00 8.9 9.0 0.3 Bias Drift Check 7/20/201116:08:20 8.9 9.0 0.2 Bias Drift Check 7/20/2011 16:08:40 2.3 2.2 1.9 Bias Drift Check 7/20/201116:09:00 0.1 0.2 17.0 Bias Drift Check 7/20/201116:09:20 0.0 0.1 23.1 Bias DriftCheck 7/20/2011 16:09:40 0.0 0.1 25.1 Bias DriftCheck 7/20/201116:10:00 0.0 0.1 26.1 Bias DriftCheck 7/20/201116:10:20 0.0 0.1 26.5 50227.0 ppm Bias DriftCheck 7/20/201116:10:40 0.0 0.1 26.9 Bias Drift Check 7/20/201116:11:00 0.0 0.1 26.9 Bias Drift Check 7/20/201116:11:20 0.0 0.1 26.9 Bias Drift Check 7/20/201116:11:40 0.1 0.0 27.2 Bias Drift Check 7/20/201116:12:00 15.5 1.9 33.5 Bias Drift Check 7/20/201116:12:20 18.1 2.2 18.9 Bias Drift Check 7/20/201116:12:40 18.2 2.2 10.9 Bias Drift Check 7/20/201116:13:00 17.8 2.2 8.8 Bias Drift Check 7/20/201116:13:20 1.3 0.2 7.2 Bias Drift Check 7/20/201116:13:40 0.1 0.1 5.6 Bias Drift Check 7/20/201116:14:00 0.1 0.0 5.7 Bias DriftCheck 7/20/201116:14:20 0.1 0.0 5.9 Bias Drift Check 7/20/201116:14:40 0.0 0.0 5.8 Bias Drift Check 7/20/201116:15:00 0.0 0.0 5.7 Bias Drift Check 7/20/201116:15:20 0.0 0.0 5.6 Bias Drift Check

7/21/2011 6:43:40 0.0 0.0 0.3 Analyzer Cal 7/21/20116:44:00 0.0 -0.1 0.6 Analyzer Cal 7/21/20116:44:20 0.0 -0.1 0.9 Analyzer Cal 7/21/20116:44:40 0.0 -0.1 1.1 Analyzer Cal 7/21/20116:45:00 0.0 -0.1 1.2 Analyzer Cal 7/21/20116:45:20 0.0 -0.1 1.1 Analyzer Cal 7/21/20116:45:40 0.0 -0.1 1.1 Analyzer Cal

Page 6of22 ArcelorMitlal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2

### ,% 502, ppm Notes 7/20/201115:58:00 18.2 2.2 4.1 Bias Drift Check 7/20/201115:58:20 18.2 2.2 4.1 Bias Drift Check 7/20/201115:58:40 18.2 2.2 4.2 Bias Drift Check 7/20/201115:59:00 18.2 2.2 4.3 Bias Drift Check 7/20/201115:59:20 18.2 2.2 4.2 Bias Drift Check 7/20/201115:59:40 18.2 2.2 4.4 Bias DriftCheck 7/20/201116:00:00 18.1 2.2 4.5 Bias DriftCheck 7/20/201116:00:20 18.2 2.2 4.5 Bias Drift Check 7/20/2011 16:00:40 18.2 2.2 4.6 Bias Drift Check 7/20/201116:01:00 8.0 1.0 4.9 Bias Drift Check 7/20/201116:01:20 0.1 0.1 5.8 Bias Drift Check 7/20/201116:01:40 0.1 0.1 4.6 Bias Drift Check 7/20/201116:02:00 0.1 0.1 2.3 Bias Drift Check 7/20/201116:02:20 0.1 0.0 1.7 Bias Drift Check 7/20/201116:02:40 0.0 0.0 1.7 Bias Drift Check 7/20/201116:03:00 0.0 0.0 1.7 Bias Drift Check 7/20/201116:03:20 0.0 0.0 1.6 Bias Drift Check 7/20/201116:03:40 0.0 0.0 1.5 N2Zero Bias DriftCheck 7/20/2011 16:04:00 0.0 0.0 1.5 Bias DriftCheck 7/20/201116:04:20 0.0 0.0 1.5 Bias DriftCheck 7/20/201116:04:40 0.0 0.0 1.5 Bias Drift Check 7/20/201116:05:00 0.0 0.0 1.5 Bias Drift Check 7/20/201116:05:20 0.0 0.0 1.4 Bias Drift Check 7/20/201116:05:40 4.7 0.6 1.5 Bias Drift Check 7/20/201116:06:00 5.7 5.0 1.8 Bias Drift Check 7/20/201116:06:20 8.8 8.6 1.6 Bias Drift Check 7/20/201116:06:40 8.9 8.9 0.7 Bias Drift Check 7/20/201116:07:00 8.9 8.9 0.3 Bias DriftCheck 7/20/201116:07:20 8.9 9.0 0.3 02 9.0/C02 9.0 Bias Drift Check 7/20/201116:07:40 8.9 9.0 0.3 Bias Drift Check 7/20/201116:08:00 8.9 9.0 0.3 Bias Drift Check 7/20/201116:08:20 8.9 9.0 0.2 Bias Drift Check 7/20/2011 16:08:40 2.3 2.2 1.9 Bias Drift Check 7/20/201116:09:00 0.1 0.2 17.0 Bias Drift Check 7/20/201116:09:20 0.0 0.1 23.1 Bias DriftCheck 7/20/2011 16:09:40 0.0 0.1 25.1 Bias DriftCheck 7/20/201116:10:00 0.0 0.1 26.1 Bias DriftCheck 7/20/201116:10:20 0.0 0.1 26.5 50227.0 ppm Bias DriftCheck 7/20/201116:10:40 0.0 0.1 26.9 Bias Drift Check 7/20/201116:11:00 0.0 0.1 26.9 Bias Drift Check 7/20/201116:11:20 0.0 0.1 26.9 Bias Drift Check 7/20/201116:11:40 0.1 0.0 27.2 Bias Drift Check 7/20/201116:12:00 15.5 1.9 33.5 Bias Drift Check 7/20/201116:12:20 18.1 2.2 18.9 Bias Drift Check 7/20/201116:12:40 18.2 2.2 10.9 Bias Drift Check 7/20/201116:13:00 17.8 2.2 8.8 Bias Drift Check 7/20/201116:13:20 1.3 0.2 7.2 Bias Drift Check 7/20/201116:13:40 0.1 0.1 5.6 Bias Drift Check 7/20/201116:14:00 0.1 0.0 5.7 Bias DriftCheck 7/20/201116:14:20 0.1 0.0 5.9 Bias Drift Check 7/20/201116:14:40 0.0 0.0 5.8 Bias Drift Check 7/20/201116:15:00 0.0 0.0 5.7 Bias Drift Check 7/20/201116:15:20 0.0 0.0 5.6 Bias Drift Check

7/21/2011 6:43:40 0.0 0.0 0.3 Analyzer Cal 7/21/20116:44:00 0.0 -0.1 0.6 Analyzer Cal 7/21/20116:44:20 0.0 -0.1 0.9 Analyzer Cal 7/21/20116:44:40 0.0 -0.1 1.1 Analyzer Cal 7/21/20116:45:00 0.0 -0.1 1.2 Analyzer Cal 7/21/20116:45:20 0.0 -0.1 1.1 Analyzer Cal 7/21/20116:45:40 0.0 -0.1 1.1 Analyzer Cal

Page 6of22ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% 502, ppm Notes 7/21/20116:46:00 0.0 -0.1 1.0 Analyzer Cal 7/21/20116:46:20 0.0 -0.1 1.0 Analyzer Cal 7/21/20116:46:40 0.0 -0.1 1.1 Analyzer Cal 7/21/2011 6:47:00 0.0 -0.1 1.1 Analyzer Cal 7/21/2011 6:47:20 0.0 -0.1 1.1 Analyzer Cal 7/21/2011 6:47:40 0.0 -0.1 1.0 Analyzer Cal 7/21/20116:48:00 0.0 -0.1 0.6 Analyzer Cal 7/21/20116:48:20 0.0 -0.1 0.2 AnalyzerCal 7/21/20116:48:40 0.0 -0.1 0.4 Analyzer Cal 7/21/20116:49:00 0.0 -0.1 0.8 Analyzer Cal 7/21/20116:49:20 0.0 -0.1 1.0 Analyzer Cal 7/21/2011 6:49:40 0.0 -0.1 1.0 Analyzer Cal 7/21/2011 6:50:00 0.0 -0.1 0.9 Analyzer Cal 7/21/2011 6:50:20 0.0 0.0 0.8 Analyzer Cal 7/21/2011 6:50:40 0.0 0.0 0.8 Analyzer Cal 7/21/2011 6:51:00 0.0 0.0 0.9 N2 Zero Analyzer Cal 7/21/2011 6:51:20 0.0 0.0 0.5 N2 Zero Analyzer Cal 7/21/2011 6:51:40 0.0 0.0 -0.1 AnalyzerCal 7/21/20116:52:00 16.1 0.9 -0.1 AnalyzerCal 7/21/20116:52:20 22.1 5.7 -0.5 Analyzer Cal 7/21/20116:52:40 22.2 5.8 -0.8 Analyzer Cal 7/21/20116:53:00 22.2 5.8 -0.7 Analyzer Cal 7/21/20116:53:20 21.9 5.7 -0.7 Analyzer Cal 7/21/20116:53:40 21.9 5.5 -0.7 02 21.9/C025.5 Analyzer Cal 7/21/20116:54:00 21.9 5.5 -0.7 Analyzer Cal 7/21/20116:54:20 13.2 7.0 -0.7 Analyzer Cal 7/21/20116:54:40 9.0 9.1 -0.6 Analyzer Cal 7/21/20116:55:00 9.0 9.0 -0.7 02 9.0/C02 9.0 AnalyzerCal 7/21/20116:55:20 7.1 6.2 -0.7 AnalyzerCal 7/21/20116:55:40 0.1 0.1 3.1 Analyzer Cal 7/21/20116:56:00 0.0 0.1 27.3 Analyzer Cal 7/21/20116:56:20 0.0 0.1 44.0 Analyzer Cal 7/21/20116:56:40 0.0 0.1 48.3 Analyzer Cal 7/21/2011 6:57:00 0.0 0.0 49.5 Analyzer Cal 7/21/20116:57:20 0.0 0.0 49.6 Analyzer Cal 7/21/20116:57:40 0.0 0.0 49.8 Analyzer Cal 7/21/20116:58:00 0.0 0.0 50.5 Analyzer Cal 7/21/20116:58:20 0.0 0.0 53.0 Analyzer Cal 7/21/20116:58:40 0.0 0.0 51.3 Analyzer Cal 7/21/20116:59:00 0.0 0.0 50.7 Analyzer Cal 7/21/20116:59:20 0.1 0.1 31.3 Analyzer Cal 7/21/20116:59:40 0.0 0.0 1.9 AnalyzerCal 7/21/20117:00:00 0.0 0.0 0.4 Analyzer Cal 7/21/20117:00:20 0.0 0.0 0.3 AnalyzerCal 7/21/20117:00:40 0.0 0.0 0.1 AnalyzerCal 7/21/20117:01:00 0.0 0.0 0.2 AnalyzerCal 7/21/20117:01:20 0.0 0.0 19.7 AnalyzerCal 7/21/20117:01:40 0.0 0.0 49.3 Analyzer Cal 7/21/20117:02:00 0.0 0.0 50.7 Analyzer Cal 7/21/20117:02:20 0.0 0.0 50.1 50250.2 ppm Analyzer Cal 7/21/20117:02:40 0.0 0.0 50.3 Analyzer Cal 7/21/20117:03:00 0.1 0.0 49.3 AnalyzerCal 7/21/20117:03:20 0.0 0.0 30.8 AnalyzerCal 7/21/20117:03:40 0.0 0.0 27.6 Analyzer Cal 7/21/20117:04:00 0.0 0.0 27.7 Analyzer Cal 7/21/20117:04:20 0.0 0.0 27.3 50227.0 ppm Analyzer Cal 7/21/20117:04:40 3.1 0.0 26.2 AnalyzerCal 7/21/20117:28:00 20.7 0.1 -0.6 7/21/20117:28:20 20.7 0.1 -0.7 System Bias Check 7/21/20117:28:40 20.7 0.1 -0.6 System Bias Check 7/21/20117:29:00 20.7 0.1 -0.6 System Bias Check

Page 7 of22 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% 502, ppm Notes 7/21/20116:46:00 0.0 -0.1 1.0 Analyzer Cal 7/21/20116:46:20 0.0 -0.1 1.0 Analyzer Cal 7/21/20116:46:40 0.0 -0.1 1.1 Analyzer Cal 7/21/2011 6:47:00 0.0 -0.1 1.1 Analyzer Cal 7/21/2011 6:47:20 0.0 -0.1 1.1 Analyzer Cal 7/21/2011 6:47:40 0.0 -0.1 1.0 Analyzer Cal 7/21/20116:48:00 0.0 -0.1 0.6 Analyzer Cal 7/21/20116:48:20 0.0 -0.1 0.2 AnalyzerCal 7/21/20116:48:40 0.0 -0.1 0.4 Analyzer Cal 7/21/20116:49:00 0.0 -0.1 0.8 Analyzer Cal 7/21/20116:49:20 0.0 -0.1 1.0 Analyzer Cal 7/21/2011 6:49:40 0.0 -0.1 1.0 Analyzer Cal 7/21/2011 6:50:00 0.0 -0.1 0.9 Analyzer Cal 7/21/2011 6:50:20 0.0 0.0 0.8 Analyzer Cal 7/21/2011 6:50:40 0.0 0.0 0.8 Analyzer Cal 7/21/2011 6:51:00 0.0 0.0 0.9 N2 Zero Analyzer Cal 7/21/2011 6:51:20 0.0 0.0 0.5 N2 Zero Analyzer Cal 7/21/2011 6:51:40 0.0 0.0 -0.1 AnalyzerCal 7/21/20116:52:00 16.1 0.9 -0.1 AnalyzerCal 7/21/20116:52:20 22.1 5.7 -0.5 Analyzer Cal 7/21/20116:52:40 22.2 5.8 -0.8 Analyzer Cal 7/21/20116:53:00 22.2 5.8 -0.7 Analyzer Cal 7/21/20116:53:20 21.9 5.7 -0.7 Analyzer Cal 7/21/20116:53:40 21.9 5.5 -0.7 02 21.9/C025.5 Analyzer Cal 7/21/20116:54:00 21.9 5.5 -0.7 Analyzer Cal 7/21/20116:54:20 13.2 7.0 -0.7 Analyzer Cal 7/21/20116:54:40 9.0 9.1 -0.6 Analyzer Cal 7/21/20116:55:00 9.0 9.0 -0.7 02 9.0/C02 9.0 AnalyzerCal 7/21/20116:55:20 7.1 6.2 -0.7 AnalyzerCal 7/21/20116:55:40 0.1 0.1 3.1 Analyzer Cal 7/21/20116:56:00 0.0 0.1 27.3 Analyzer Cal 7/21/20116:56:20 0.0 0.1 44.0 Analyzer Cal 7/21/20116:56:40 0.0 0.1 48.3 Analyzer Cal 7/21/2011 6:57:00 0.0 0.0 49.5 Analyzer Cal 7/21/20116:57:20 0.0 0.0 49.6 Analyzer Cal 7/21/20116:57:40 0.0 0.0 49.8 Analyzer Cal 7/21/20116:58:00 0.0 0.0 50.5 Analyzer Cal 7/21/20116:58:20 0.0 0.0 53.0 Analyzer Cal 7/21/20116:58:40 0.0 0.0 51.3 Analyzer Cal 7/21/20116:59:00 0.0 0.0 50.7 Analyzer Cal 7/21/20116:59:20 0.1 0.1 31.3 Analyzer Cal 7/21/20116:59:40 0.0 0.0 1.9 AnalyzerCal 7/21/20117:00:00 0.0 0.0 0.4 Analyzer Cal 7/21/20117:00:20 0.0 0.0 0.3 AnalyzerCal 7/21/20117:00:40 0.0 0.0 0.1 AnalyzerCal 7/21/20117:01:00 0.0 0.0 0.2 AnalyzerCal 7/21/20117:01:20 0.0 0.0 19.7 AnalyzerCal 7/21/20117:01:40 0.0 0.0 49.3 Analyzer Cal 7/21/20117:02:00 0.0 0.0 50.7 Analyzer Cal 7/21/20117:02:20 0.0 0.0 50.1 50250.2 ppm Analyzer Cal 7/21/20117:02:40 0.0 0.0 50.3 Analyzer Cal 7/21/20117:03:00 0.1 0.0 49.3 AnalyzerCal 7/21/20117:03:20 0.0 0.0 30.8 AnalyzerCal 7/21/20117:03:40 0.0 0.0 27.6 Analyzer Cal 7/21/20117:04:00 0.0 0.0 27.7 Analyzer Cal 7/21/20117:04:20 0.0 0.0 27.3 50227.0 ppm Analyzer Cal 7/21/20117:04:40 3.1 0.0 26.2 AnalyzerCal 7/21/20117:28:00 20.7 0.1 -0.6 7/21/20117:28:20 20.7 0.1 -0.7 System Bias Check 7/21/20117:28:40 20.7 0.1 -0.6 System Bias Check 7/21/20117:29:00 20.7 0.1 -0.6 System Bias Check

Page 7 of22ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/21/20117:29:20 20.7 0.1 -0.6 System Bias Check 7/21/20117:29:40 15.4 0.2 -0.5 System Bias Check 7/21/20117:30:00 1.1 0.1 - -0.2 System Bias Check 7/21/20117:30:20 0.1 0.1 0.0 System Bias Check 7/21/20117:30:40 0.1 0.1 0.0 System Bias Check 7/21/20117:31:00 0.1 0.1 0.0 System Bias Check 7/21/20117:31:20 0.1 0.1 0.1 System Bias Check 7/21/20117:31:40 0.0 0.0 0.0 System Bias Check 7/21/20117:32:00 0.0 0.0 -0.1 System Bias Check 7/21/20117:32:20 0.0 0.0 -0.1 N2 Zero System Bias Check 7/21/20117:32:40 0.0 0.0 0.0 System Bias Check 7/21/20117:33:00 3.8 0.6 0.2 System Bias Check 7/21/20117:33:20 7.1 7.1 0.5 System Bias Check 7/21/20117:33:40 8.9 8.8 0.2 System Bias Check 7/21/20117:34:00 8.9 8.9 -0.3 System Bias Check 7/21/20117:34:20 8.9 8.9 -0.4 02 9.0/C02 9.0 System Bias Check 7/21/20117:34:40 8.9 9.0 -0.6 System Bias Check 7/21/20117:35:00 6.6 5.7 -0.4 System Bias Check 7/21/20117:35:20 0.1 0.3 12.4 System Bias Check 7/21/20117:35:40 0.0 0.2 22.7 System Bias Check 7/21/20117:36:00 0.0 0.2 25.0 System Bias Check 7/21/20117:36:20 0.0 0.1 25.8 System Bias Check 7/21/20117:36:40 0.0 0.1 25.9 System Bias Check 7/21/20117:37:00 0.0 0.1 26.0 System Bias Check 7/21/20117:37:20 0.0 0.1 26.4 System Bias Check 7/21/20117:37:40 0.0 0.1 26.4 System Bias Check 7/21/20117:38:00 0.0 0.1 26.5 System Bias Check 7/21/20117:38:20 0.0 0.1 

### Z6.7 S02 27.0 ppm System Bias Check 7/21/20117:38:40 1.6 0.3 35.4 System Bias Check 7/21/20117:39:00 0.0 0.1 23.0 System Bias Check 7/21/20117:39:20 0.0 0.1 13.2 System Bias Check 7/21/20117:39:40 0.0 0.1 12.6 System Bias Check 7/21/20117:40:00 0.0 0.1 12.6 System Bias Check 7/21/20117:40:20 0.0 0.1 12.8 System Bias Check 7/21/20117:40:40 0.0 0.1 12.8 System Bias Check 7/21/20117:41:00 0.0 0.1 12.9 System Bias Check 7/21/20117:41:20 0.0 0.1 13.3 Nox239.1 ppm System Bias Check 7/21/20117:41:40 0.0 0.1 13.3 System Bias Check 7/21/20117:42:00 0.0 0.1 12.9 System Bias Check 7/21/20117:42:20 1.4 0.3 13.2 System Bias Check 7/21/20117:42:40 17.5 2.3 12.6 System Bias Check 7/21/20117:43:00 18.1 2.4 9.8 Standby In Stack 7/21/20117:43:20 18.1 2.4 7.2 Standby In Stack 7/21/20117:43:40 18.2 2.4 6.3 Standby In Stack

7/21/201110:08:40 18.1 2.4 6.4 Standby In Stack 7/21/201110:09:00 18.1 2.4 6.3 Standby In Stack 7/21/201110:09:20 18.1 2.4 6.3 Standby In Stack 7/21/201110:09:40 18.1 2.4 6.3 Standby In Stack 7/21/201110:10:00 18.1 2.4 6.2 Standby In Stack 7/21/201110:10:20 18.1 2.4 6.2 Standby In Stack 7/21/201110:10:40 18.1 2.4 6.1 Standby In Stack 7/21/201110:11:00 18.1 2.4 6.1 In Stack 7/21/201110:11:20 18.1 2.4 6.1 In Stack 7/21/201110:11:40 18.1 2.4 6.1 In Stack 7/21/201110:12:00 18.1 2.4 6.0 In Stack 7/21/201110:12:20 18.1 2.4 6.1 In Stack 7/21/201110:12:40 18.1 2.4 6.3 In Stack 7/21/201110:13:00 18.1 2.4 6.4 In Stack 7/21/201110:13:20 18.1 2.4 6.3 In Stack 7/21/201110:13:40 18.1 2.4 6.3 In Stack

Page 8of22 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/21/20117:29:20 20.7 0.1 -0.6 System Bias Check 7/21/20117:29:40 15.4 0.2 -0.5 System Bias Check 7/21/20117:30:00 1.1 0.1 - -0.2 System Bias Check 7/21/20117:30:20 0.1 0.1 0.0 System Bias Check 7/21/20117:30:40 0.1 0.1 0.0 System Bias Check 7/21/20117:31:00 0.1 0.1 0.0 System Bias Check 7/21/20117:31:20 0.1 0.1 0.1 System Bias Check 7/21/20117:31:40 0.0 0.0 0.0 System Bias Check 7/21/20117:32:00 0.0 0.0 -0.1 System Bias Check 7/21/20117:32:20 0.0 0.0 -0.1 N2 Zero System Bias Check 7/21/20117:32:40 0.0 0.0 0.0 System Bias Check 7/21/20117:33:00 3.8 0.6 0.2 System Bias Check 7/21/20117:33:20 7.1 7.1 0.5 System Bias Check 7/21/20117:33:40 8.9 8.8 0.2 System Bias Check 7/21/20117:34:00 8.9 8.9 -0.3 System Bias Check 7/21/20117:34:20 8.9 8.9 -0.4 02 9.0/C02 9.0 System Bias Check 7/21/20117:34:40 8.9 9.0 -0.6 System Bias Check 7/21/20117:35:00 6.6 5.7 -0.4 System Bias Check 7/21/20117:35:20 0.1 0.3 12.4 System Bias Check 7/21/20117:35:40 0.0 0.2 22.7 System Bias Check 7/21/20117:36:00 0.0 0.2 25.0 System Bias Check 7/21/20117:36:20 0.0 0.1 25.8 System Bias Check 7/21/20117:36:40 0.0 0.1 25.9 System Bias Check 7/21/20117:37:00 0.0 0.1 26.0 System Bias Check 7/21/20117:37:20 0.0 0.1 26.4 System Bias Check 7/21/20117:37:40 0.0 0.1 26.4 System Bias Check 7/21/20117:38:00 0.0 0.1 26.5 System Bias Check 7/21/20117:38:20 0.0 0.1 

### Z6.7 S02 27.0 ppm System Bias Check 7/21/20117:38:40 1.6 0.3 35.4 System Bias Check 7/21/20117:39:00 0.0 0.1 23.0 System Bias Check 7/21/20117:39:20 0.0 0.1 13.2 System Bias Check 7/21/20117:39:40 0.0 0.1 12.6 System Bias Check 7/21/20117:40:00 0.0 0.1 12.6 System Bias Check 7/21/20117:40:20 0.0 0.1 12.8 System Bias Check 7/21/20117:40:40 0.0 0.1 12.8 System Bias Check 7/21/20117:41:00 0.0 0.1 12.9 System Bias Check 7/21/20117:41:20 0.0 0.1 13.3 Nox239.1 ppm System Bias Check 7/21/20117:41:40 0.0 0.1 13.3 System Bias Check 7/21/20117:42:00 0.0 0.1 12.9 System Bias Check 7/21/20117:42:20 1.4 0.3 13.2 System Bias Check 7/21/20117:42:40 17.5 2.3 12.6 System Bias Check 7/21/20117:43:00 18.1 2.4 9.8 Standby In Stack 7/21/20117:43:20 18.1 2.4 7.2 Standby In Stack 7/21/20117:43:40 18.2 2.4 6.3 Standby In Stack

7/21/201110:08:40 18.1 2.4 6.4 Standby In Stack 7/21/201110:09:00 18.1 2.4 6.3 Standby In Stack 7/21/201110:09:20 18.1 2.4 6.3 Standby In Stack 7/21/201110:09:40 18.1 2.4 6.3 Standby In Stack 7/21/201110:10:00 18.1 2.4 6.2 Standby In Stack 7/21/201110:10:20 18.1 2.4 6.2 Standby In Stack 7/21/201110:10:40 18.1 2.4 6.1 Standby In Stack 7/21/201110:11:00 18.1 2.4 6.1 In Stack 7/21/201110:11:20 18.1 2.4 6.1 In Stack 7/21/201110:11:40 18.1 2.4 6.1 In Stack 7/21/201110:12:00 18.1 2.4 6.0 In Stack 7/21/201110:12:20 18.1 2.4 6.1 In Stack 7/21/201110:12:40 18.1 2.4 6.3 In Stack 7/21/201110:13:00 18.1 2.4 6.4 In Stack 7/21/201110:13:20 18.1 2.4 6.3 In Stack 7/21/201110:13:40 18.1 2.4 6.3 In Stack

Page 8of22ArceJorMittaJ Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/21/201110:14:00 18.1 2.4 6.4 In Stack 7/21/201110:14:20 18.1 2.4 6.4 In Stack 7/21/201110:14:40 18.1 2.4**~** 6.4 In Stack 7/21/201110:15:00 18.1 2.4 6.5 Run 2 7/21/201110:15:20 18.2 2.3 6.5 Run 2 7/21/201110:15:40 18.1 2.4 6.4 Run2 7/21/201110:16:00 18.1 2.4 6.4 Run2 7/21/201110:16:20 18.1 2.4 6.4 Run 2 7/21/201110:16:40 18.1 2.4 6.4 Run2 7/21/201110:17:00 18.1 2.4 6.5 Run 2 7/21/201110:17:20 18.1 2.4 6.4 Run 2 7/21/201110:17:40 18.1 2.4 6.2 Run 2 7/21/201110:18:00 18.1 2.4 6.0 Run 2 7/21/201110:18:20 18.1 2.4 6.0 Run2 7/21/201110:18:40 18.1 2.4 6.0 Run 2 7/21/201110:19:00 18.1 2.4 6.0 Run2 7/21/201110:19:20 18.1 2.4 6.1 Run2 7/21/201110:19:40 18.1 2.4 6.1 Run 2 7/21/201110:20:00 18.1 2.4 6.2 Run 2 7/21/201110:20:20 18.1 2.4 6.2 Run 2 7/21/201110:20:40 18.1 2.4 6.4 Run2 7/21/201110:21:00 18.1 2.4 6.4 Run 2 7/21/201110:21:20 18.1 2.4 6.3 Run2 7/21/201110:21:40 18.1 2.4 6.1 Run2 7/21/201110:22:00 18.1 2.4 6.1 Run2 7/21/201110:22:20 18.1 2.4 6.1 Run 2 7/21/201110:22:40 18.1 2.4 5.9 Run 2 7/21/201110:23:00 18.1 2.4 5.9 Run 2 7/21/201110:23:20 18.1 2.4 5.9 Run 2 7/21/201110:23:40 18.1 2.4 6.0 Run 2 7/21/201110:24:00 18.1 2.4 6.0 Run2 7/21/201110:24:20 18.1 2.4 6.0 Run2 7/21/201110:24:40 18.1 2.4 5.9 Run2 7/21/201110:25:00 18.1 2.4 6.0 Run2 7/21/201110:25:20 18.1 2.4 6.1 Run 2 7/21/201110:25:40 18.1 2.4 6.0 Run 2 7/21/201110:26:00 18.2 2.4 5.8 Run 2 7/21/201110:26:20 18.1 2.4 5.9 Run 2 7/21/201110:26:40 18.1 2.4 6.0 Run 2 7/21/201110:27:00 18.2 2.4 5.9 Run 2 7/21/201110:27:20 18.2 2.4 5.7 Run 2 7/21/201110:27:40 18.2 2.4 5.6 Run 2 7/21/201110:28:00 18.2 2.3 5.6 Run 2 7/21/201110:28:20 18.2 2.3 5.6 Run 2 7/21/201110:28:40 18.2 2.3 5.7 Run 2 7/21/201110:29:00 18.2 2.3 5.9 Run2 7/21/201110:29:20 18.2 2.3 5.9 Run2 7/21/201110:29:40 18.2 2.3 5.8 Run 2 7/21/201110:30:00 18.3 2.3 5.9 Run 2 7/21/201110:30:20 18.2 2.3 5.9 Run 2 7/21/201110:30:40 18.3 2.2 6.0 Run2 7/21/201110:31:00 18.3 2.2 6.1 Run2 7/21/201110:31:20 18.3 2.2 6.3 Run 2 7/21/201110:31:40 18.3 2.2 6.5 Run 2 7/21/201110:32:00 18.3 2.2 6.6 Run 2 7/21/201110:32:20 18.3 2.2 6.7 Run 2 7/21/201110:32:40 18.3 2.2 6.7 Run2 7/21/201110:33:00 18.3 2.2 6.8 Run2 7/21/201110:33:20 18.3 2.2 6.7 Run 2 7/21/201110:33:40 18.3 2.2 6.7 Run 2 7/21/201110:34:00 18.3 2.2 6.6 Run 2

Page 9of22 ArceJorMittaJ Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/21/201110:14:00 18.1 2.4 6.4 In Stack 7/21/201110:14:20 18.1 2.4 6.4 In Stack 7/21/201110:14:40 18.1 2.4**~** 6.4 In Stack 7/21/201110:15:00 18.1 2.4 6.5 Run 2 7/21/201110:15:20 18.2 2.3 6.5 Run 2 7/21/201110:15:40 18.1 2.4 6.4 Run2 7/21/201110:16:00 18.1 2.4 6.4 Run2 7/21/201110:16:20 18.1 2.4 6.4 Run 2 7/21/201110:16:40 18.1 2.4 6.4 Run2 7/21/201110:17:00 18.1 2.4 6.5 Run 2 7/21/201110:17:20 18.1 2.4 6.4 Run 2 7/21/201110:17:40 18.1 2.4 6.2 Run 2 7/21/201110:18:00 18.1 2.4 6.0 Run 2 7/21/201110:18:20 18.1 2.4 6.0 Run2 7/21/201110:18:40 18.1 2.4 6.0 Run 2 7/21/201110:19:00 18.1 2.4 6.0 Run2 7/21/201110:19:20 18.1 2.4 6.1 Run2 7/21/201110:19:40 18.1 2.4 6.1 Run 2 7/21/201110:20:00 18.1 2.4 6.2 Run 2 7/21/201110:20:20 18.1 2.4 6.2 Run 2 7/21/201110:20:40 18.1 2.4 6.4 Run2 7/21/201110:21:00 18.1 2.4 6.4 Run 2 7/21/201110:21:20 18.1 2.4 6.3 Run2 7/21/201110:21:40 18.1 2.4 6.1 Run2 7/21/201110:22:00 18.1 2.4 6.1 Run2 7/21/201110:22:20 18.1 2.4 6.1 Run 2 7/21/201110:22:40 18.1 2.4 5.9 Run 2 7/21/201110:23:00 18.1 2.4 5.9 Run 2 7/21/201110:23:20 18.1 2.4 5.9 Run 2 7/21/201110:23:40 18.1 2.4 6.0 Run 2 7/21/201110:24:00 18.1 2.4 6.0 Run2 7/21/201110:24:20 18.1 2.4 6.0 Run2 7/21/201110:24:40 18.1 2.4 5.9 Run2 7/21/201110:25:00 18.1 2.4 6.0 Run2 7/21/201110:25:20 18.1 2.4 6.1 Run 2 7/21/201110:25:40 18.1 2.4 6.0 Run 2 7/21/201110:26:00 18.2 2.4 5.8 Run 2 7/21/201110:26:20 18.1 2.4 5.9 Run 2 7/21/201110:26:40 18.1 2.4 6.0 Run 2 7/21/201110:27:00 18.2 2.4 5.9 Run 2 7/21/201110:27:20 18.2 2.4 5.7 Run 2 7/21/201110:27:40 18.2 2.4 5.6 Run 2 7/21/201110:28:00 18.2 2.3 5.6 Run 2 7/21/201110:28:20 18.2 2.3 5.6 Run 2 7/21/201110:28:40 18.2 2.3 5.7 Run 2 7/21/201110:29:00 18.2 2.3 5.9 Run2 7/21/201110:29:20 18.2 2.3 5.9 Run2 7/21/201110:29:40 18.2 2.3 5.8 Run 2 7/21/201110:30:00 18.3 2.3 5.9 Run 2 7/21/201110:30:20 18.2 2.3 5.9 Run 2 7/21/201110:30:40 18.3 2.2 6.0 Run2 7/21/201110:31:00 18.3 2.2 6.1 Run2 7/21/201110:31:20 18.3 2.2 6.3 Run 2 7/21/201110:31:40 18.3 2.2 6.5 Run 2 7/21/201110:32:00 18.3 2.2 6.6 Run 2 7/21/201110:32:20 18.3 2.2 6.7 Run 2 7/21/201110:32:40 18.3 2.2 6.7 Run2 7/21/201110:33:00 18.3 2.2 6.8 Run2 7/21/201110:33:20 18.3 2.2 6.7 Run 2 7/21/201110:33:40 18.3 2.2 6.7 Run 2 7/21/201110:34:00 18.3 2.2 6.6 Run 2

Page 9of22ArcelorMiltal Data Logger Output Barr Engineering Minorca Mine TestDate: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace StackC

TIMESTAMP O2

### .% CO2 •

### % S02. pprn Notes 7/21/201110:34:20 18.3 2.3 6.4 Run 2 7/21/201110:34:40 18.3 2.2 6.3 Run2 7/21/201110:35:00 18.3 2.2

- 6.2 Run2 7/21/201110:35:20 18.3 2.2 6.1 Run2 7/21/201110:35:40 18.3 2.2 6.0 Run 2 7/21/201110:36:00 18.3 2.3 6.0 Run2 7/21/201110:36:20 18.3 2.3 5.9 Run 2 7/21/201110:36:40 18.3 2.2 5.9 Run 2 7/21/201110:37:00 18.3 2.3 5.9 Run 2 7/21/201110:37:20 18.3 2.3 5.9 Run 2 7/21/201110:37:40 18.3 2.3 5.8 Run 2 7/21/201110:38:00 18.3 2.3 5.6 Run2 7/21/201110:38:20 18.3 2.3 5.7 Run2 7/21/201110:38:40 18.3 2.2 5.6 Run2 7/21/201110:39:00 18.3 2.3 5.4 Run2 7/21/201110:39:20 18.3 2.3 5.5 Run2 7/21/201110:39:40 18.3 2.3 5.4 Run2 7/21/201110:40:00 18.3 2.3 5.4 Run2 7/21/201110:40:20 18.3 2.2 5.3 Run 2 7/21/201110:40:40 18.3 2.3 5.3 Run 2 7/21/201110:41:00 18.3 2.3 5.3 Run 2 7/21/201110:41:20 18.3 2.3 5.5 Run 2 7/21/201110:41:40 18.3 2.2 5.6 Run2 7/21/201110:42:00 18.3 2.2 5.5 Run2 7/21/201110:42:20 18.3 2.2 5.4 Run2 7/21/201110:42:40 18.3 2.2 5.4 Run2 7/21/201110:43:00 18.3 2.2 5.5 Run2 7/21/201110:43:20 18.3 2.2 5.5 Run2 7/21/201110:43:40 18.3 2.2 5.5 Run 2 7/21/201110:44:00 18.4 2.2 5.4 Run 2 7/21/201110:44:20 18.4 2.2 5.4 Run 2 7/21/201110:44:40 18.4 2.2 5.5 Run 2 7/21/201110:45:00 18.4 2.2 5.6 Run 2 7/21/201110:45:20 18.3 2.2 5.6 Run2 7/21/201110:45:40 18.3 2.2 5.6 Run2 7/21/201110:46:00 18.3 2.2 5.5 Run2 7/21/201110:46:20 18.3 2.2 5.5 Run2 7/21/201110:46:40 18.3 2.2 5.4 Run 2 7/21/201110:47:00 18.3 2.2 5.3 Run2 7/21/201110:47:20 18.3 2.3 5.2 Run2 7/21/201110:47:40 18.3 2.3 5.1 Run 2 7/21/201110:48:00 18.3 2.3 5.0 Run2 7/21/201110:48:20 18.3 2.3 4.8 Run2 7/21/201110:48:40 18.3 2.3 4.7 Run2 7/21/201110:49:00 18.3 2.3 4.7 Run2 7/21/201110:49:20 18.3 2.3 4.7 Run 2 7/21/201110:49:40 18.3 2.3 4.6 Run 2 7/21/201110:50:00 18.3 2.3 4.5 Run2 7/21/201110:50:20 18.3 2.3 4.6 Run2 7/21/201110:50:40 18.3 2.3 4.6 Run2 7/21/201110:51:00 18.3 2.3 4.7 Run2 7/21/201110:51:20 18.3 2.3 4.7 Run 2 7/21/201110:51:40 18.2 2.3 4.7 Run2 7/21/201110:52:00 18.3 2.3 4.8 Run 2 7/21/201110:52:20 18.2 2.3 4.8 Run 2 7/21/201110:52:40 18.2 2.3 4.7 Run2 7/21/201110:53:00 18.2 2.3 4.6 Run 2 7/21/201110:53:20 18.2 2.4 4.3 Run 2 7/21/201110:53:40 18.2 2.4 4.2 Run 2 7/21/201110:54:00 18.2 2.3 4.3 Run 2 7/21/201110:54:20 18.2 2.3 4.3 Run 2

Page 10of22 ArcelorMiltal Data Logger Output Barr Engineering Minorca Mine TestDate: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace StackC

TIMESTAMP O2

### .% CO2 •

### % S02. pprn Notes 7/21/201110:34:20 18.3 2.3 6.4 Run 2 7/21/201110:34:40 18.3 2.2 6.3 Run2 7/21/201110:35:00 18.3 2.2

- 6.2 Run2 7/21/201110:35:20 18.3 2.2 6.1 Run2 7/21/201110:35:40 18.3 2.2 6.0 Run 2 7/21/201110:36:00 18.3 2.3 6.0 Run2 7/21/201110:36:20 18.3 2.3 5.9 Run 2 7/21/201110:36:40 18.3 2.2 5.9 Run 2 7/21/201110:37:00 18.3 2.3 5.9 Run 2 7/21/201110:37:20 18.3 2.3 5.9 Run 2 7/21/201110:37:40 18.3 2.3 5.8 Run 2 7/21/201110:38:00 18.3 2.3 5.6 Run2 7/21/201110:38:20 18.3 2.3 5.7 Run2 7/21/201110:38:40 18.3 2.2 5.6 Run2 7/21/201110:39:00 18.3 2.3 5.4 Run2 7/21/201110:39:20 18.3 2.3 5.5 Run2 7/21/201110:39:40 18.3 2.3 5.4 Run2 7/21/201110:40:00 18.3 2.3 5.4 Run2 7/21/201110:40:20 18.3 2.2 5.3 Run 2 7/21/201110:40:40 18.3 2.3 5.3 Run 2 7/21/201110:41:00 18.3 2.3 5.3 Run 2 7/21/201110:41:20 18.3 2.3 5.5 Run 2 7/21/201110:41:40 18.3 2.2 5.6 Run2 7/21/201110:42:00 18.3 2.2 5.5 Run2 7/21/201110:42:20 18.3 2.2 5.4 Run2 7/21/201110:42:40 18.3 2.2 5.4 Run2 7/21/201110:43:00 18.3 2.2 5.5 Run2 7/21/201110:43:20 18.3 2.2 5.5 Run2 7/21/201110:43:40 18.3 2.2 5.5 Run 2 7/21/201110:44:00 18.4 2.2 5.4 Run 2 7/21/201110:44:20 18.4 2.2 5.4 Run 2 7/21/201110:44:40 18.4 2.2 5.5 Run 2 7/21/201110:45:00 18.4 2.2 5.6 Run 2 7/21/201110:45:20 18.3 2.2 5.6 Run2 7/21/201110:45:40 18.3 2.2 5.6 Run2 7/21/201110:46:00 18.3 2.2 5.5 Run2 7/21/201110:46:20 18.3 2.2 5.5 Run2 7/21/201110:46:40 18.3 2.2 5.4 Run 2 7/21/201110:47:00 18.3 2.2 5.3 Run2 7/21/201110:47:20 18.3 2.3 5.2 Run2 7/21/201110:47:40 18.3 2.3 5.1 Run 2 7/21/201110:48:00 18.3 2.3 5.0 Run2 7/21/201110:48:20 18.3 2.3 4.8 Run2 7/21/201110:48:40 18.3 2.3 4.7 Run2 7/21/201110:49:00 18.3 2.3 4.7 Run2 7/21/201110:49:20 18.3 2.3 4.7 Run 2 7/21/201110:49:40 18.3 2.3 4.6 Run 2 7/21/201110:50:00 18.3 2.3 4.5 Run2 7/21/201110:50:20 18.3 2.3 4.6 Run2 7/21/201110:50:40 18.3 2.3 4.6 Run2 7/21/201110:51:00 18.3 2.3 4.7 Run2 7/21/201110:51:20 18.3 2.3 4.7 Run 2 7/21/201110:51:40 18.2 2.3 4.7 Run2 7/21/201110:52:00 18.3 2.3 4.8 Run 2 7/21/201110:52:20 18.2 2.3 4.8 Run 2 7/21/201110:52:40 18.2 2.3 4.7 Run2 7/21/201110:53:00 18.2 2.3 4.6 Run 2 7/21/201110:53:20 18.2 2.4 4.3 Run 2 7/21/201110:53:40 18.2 2.4 4.2 Run 2 7/21/201110:54:00 18.2 2.3 4.3 Run 2 7/21/201110:54:20 18.2 2.3 4.3 Run 2

Page 10of22ArcelorMiltal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C
TIMESTAMP O2

### ,% CO2

### ,% S02. ppm Notes 7/21/201110:54:40 18.2 2.3 4.2 Run2 7/21/201110:55:00 18.2 2.4 4.0 Run 2 7/21/201110:55:20 18.2 2.3 4.0 Run 2 7/21/201110:55:40 18.2 2.3 4.2 Run 2 7/21/2011 10:56:00 18.2 2.3 4.1 Run2 7/21/201110:56:20 18.2 2.3 4.1 Run 2 7/21/201110:56:40 18.2 2.3 4.2 Run 2 7/21/201110:57:00 18.2 2.3 4.4 Run 2 7/21/201110:57:20 18.2 2.3 4.4 Run2 7/21/201110:57:40 18.2 2.3 4.5 Run2 7/21/201110:58:00 18.2 2.3 4.6 Run2 7/21/201110:58:20 18.3 2.3 4.6 Run2 7/21/201110:58:40 18.3 2.2 4.6 Run 2 7/21/201110:59:00 18.3 2.2 4.8 Run2 7/21/201110:59:20 18.3 2.2 4.9 Run 2 7/21/201110:59:40 18.3 2.2 5.0 Run2 7/21/201111:00:00 18.3 2.2 5.0 Run 2 7/21/201111:00:20 18.3 2.2 4.9 Run 2 7/21/201111:00:40 18.3 2.2 5.0 Run2 7/21/201111:01:00 18.3 2.2 5.1 Run 2 7/21/201111:01:20 18.3 2.2 5.1 Run 2 7/21/201111:01:40 18.3 2.2 5.0 Run 2 7/21/201111:02:00 18.3 2.2 5.0 Run 2 7/21/2011 11:02:20 18.3 2.2 4.9 Run 2 7/21/201111:02:40 18.3 2.2 5.0 Run 2 7/21/201111:03:00 18.3 2.2 5.3 Run2 7/21/201111:03:20 18.3 2.2 5.4 Run2 7/21/201111:03:40 18.3 2.2 5.4 Run2 7/21/201111:04:00 18.3 2.2 5.4 Run 2 7/21/201111:04:20 18.3 2.2 5.5 Run 2 7/21/201111:04:40 18.3 2.2 5.5 Run 2 7/21/201111:05:00 18.3 2.3 5.4 Run 2 7/21/201111:05:20 18.3 2.2 5.4 Run 2 7/21/201111:05:40 18.3 2.3 5.5 Run 2 7/21/201111:06:00 18.3 2.3 5.4 Run 2 7/21/201111:06:20 18.2 2.3 5.2 Run 2 7/21/201111:06:40 18.2 2.3 5.2 Run 2 7/21/201111:07:00 18.2 2.3 5.4 Run2 7/21/201111:07:20 18.2 2.3 5.3 Run2 7/21/201111:07:40 18.2 2.3 5.3 Run 2 7/21/201111:08:00 18.2 2.3 5.3 Run 2 7/21/201111:08:20 18.2 2.4 5.3 Run 2 7/21/201111:08:40 18.2 2.3 5.2 Run 2 7/21/201111:09:00 18.2 2.4 5.1 Run 2 7/21/201111:09:20 18.2 2.4 5.0 Run 2 7/21/201111:09:40 18.1 2.4 5.1 Run 2 7/21/201111:10:00 18.1 2.4 5.2 Run 2 7/21/201111:10:20 18.1 2.4 5.3 Run2 7/21/201111:10:40 18.1 2.4 5.1 Run2 7/21/201111:11:00 18.1 2.4 5.0 Run2 7/21/201111:11:20 18.1 2.4 5.2 Run 2 7/21/201111:11:40 18.1 2.4 5.2 Run 2 7/21/201111:12:00 18.1 2.4 5.2 Run 2 7/21/201111:12:20 18.1 2.4 5.3 Run 2 7/21/201111:12:40 18.1 2.4 5.6 Run 2 7/21/201111:13:00 18.1 2.4 5.8 Run2 7/21/201111:13:20 18.1 2.4 5.9 Run 2 7/21/2011 11:13:40 18.1 2.4 6.0 Run 2 7/21/201111:14:00 18.1 2.4 6.2 Run 2 7/21/201111:14:20 18.1 2.4 6.8 Run2 7/21/201111:14:40 18.1 2.3 7.1 Run 2

Page 11 of22 ArcelorMiltal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C
TIMESTAMP O2

### ,% CO2

### ,% S02. ppm Notes 7/21/201110:54:40 18.2 2.3 4.2 Run2 7/21/201110:55:00 18.2 2.4 4.0 Run 2 7/21/201110:55:20 18.2 2.3 4.0 Run 2 7/21/201110:55:40 18.2 2.3 4.2 Run 2 7/21/2011 10:56:00 18.2 2.3 4.1 Run2 7/21/201110:56:20 18.2 2.3 4.1 Run 2 7/21/201110:56:40 18.2 2.3 4.2 Run 2 7/21/201110:57:00 18.2 2.3 4.4 Run 2 7/21/201110:57:20 18.2 2.3 4.4 Run2 7/21/201110:57:40 18.2 2.3 4.5 Run2 7/21/201110:58:00 18.2 2.3 4.6 Run2 7/21/201110:58:20 18.3 2.3 4.6 Run2 7/21/201110:58:40 18.3 2.2 4.6 Run 2 7/21/201110:59:00 18.3 2.2 4.8 Run2 7/21/201110:59:20 18.3 2.2 4.9 Run 2 7/21/201110:59:40 18.3 2.2 5.0 Run2 7/21/201111:00:00 18.3 2.2 5.0 Run 2 7/21/201111:00:20 18.3 2.2 4.9 Run 2 7/21/201111:00:40 18.3 2.2 5.0 Run2 7/21/201111:01:00 18.3 2.2 5.1 Run 2 7/21/201111:01:20 18.3 2.2 5.1 Run 2 7/21/201111:01:40 18.3 2.2 5.0 Run 2 7/21/201111:02:00 18.3 2.2 5.0 Run 2 7/21/2011 11:02:20 18.3 2.2 4.9 Run 2 7/21/201111:02:40 18.3 2.2 5.0 Run 2 7/21/201111:03:00 18.3 2.2 5.3 Run2 7/21/201111:03:20 18.3 2.2 5.4 Run2 7/21/201111:03:40 18.3 2.2 5.4 Run2 7/21/201111:04:00 18.3 2.2 5.4 Run 2 7/21/201111:04:20 18.3 2.2 5.5 Run 2 7/21/201111:04:40 18.3 2.2 5.5 Run 2 7/21/201111:05:00 18.3 2.3 5.4 Run 2 7/21/201111:05:20 18.3 2.2 5.4 Run 2 7/21/201111:05:40 18.3 2.3 5.5 Run 2 7/21/201111:06:00 18.3 2.3 5.4 Run 2 7/21/201111:06:20 18.2 2.3 5.2 Run 2 7/21/201111:06:40 18.2 2.3 5.2 Run 2 7/21/201111:07:00 18.2 2.3 5.4 Run2 7/21/201111:07:20 18.2 2.3 5.3 Run2 7/21/201111:07:40 18.2 2.3 5.3 Run 2 7/21/201111:08:00 18.2 2.3 5.3 Run 2 7/21/201111:08:20 18.2 2.4 5.3 Run 2 7/21/201111:08:40 18.2 2.3 5.2 Run 2 7/21/201111:09:00 18.2 2.4 5.1 Run 2 7/21/201111:09:20 18.2 2.4 5.0 Run 2 7/21/201111:09:40 18.1 2.4 5.1 Run 2 7/21/201111:10:00 18.1 2.4 5.2 Run 2 7/21/201111:10:20 18.1 2.4 5.3 Run2 7/21/201111:10:40 18.1 2.4 5.1 Run2 7/21/201111:11:00 18.1 2.4 5.0 Run2 7/21/201111:11:20 18.1 2.4 5.2 Run 2 7/21/201111:11:40 18.1 2.4 5.2 Run 2 7/21/201111:12:00 18.1 2.4 5.2 Run 2 7/21/201111:12:20 18.1 2.4 5.3 Run 2 7/21/201111:12:40 18.1 2.4 5.6 Run 2 7/21/201111:13:00 18.1 2.4 5.8 Run2 7/21/201111:13:20 18.1 2.4 5.9 Run 2 7/21/2011 11:13:40 18.1 2.4 6.0 Run 2 7/21/201111:14:00 18.1 2.4 6.2 Run 2 7/21/201111:14:20 18.1 2.4 6.8 Run2 7/21/201111:14:40 18.1 2.3 7.1 Run 2

Page 11 of22ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2• 

### % 502• ppm Notes 7/21/201111:15:00 18.2 2.3 7.3 Run 2 7/21/201111:15:20 18.2 2.3 7.4 Run 2 7/21/201111:15:40 18.2 2.3 7.6 Run 2 7/21/201111:16:00 18.2 2.3 7.8 Run 2 7/21/201111:16:20 18.2 2.3 7.8 Run 2 7/21/201111:16:40 18.2 2.3 7.8 Run 2 7/21/201111:17:00 18.2 2.3 7.8 Run 2 7/21/201111:17:20 18.2 2.3 7.8 Run2 7/21/201111:17:40 18.2 2.3 7.8 Run2 7/21/201111:18:00 18.2 2.3 7.8 Run2 7/21/201111:18:20 18.2 2.3 7.8 Run 2 7/21/201111:18:40 18.2 2.3 7.7 Run 2 7/21/201111:19:00 18.2 2.3 7.7 Run 2 7/21/201111:19:20 18.2 2.3 7.7 Run 2 7/21/201111:19:40 18.2 2.3 7.6 Run 2 7/21/201111:20:00 18.2 2.3 7.5 Run 2 7/21/201111:20:20 18.2 2.3 7.4 Run 2 7/21/201111:20:40 18.2 2.3 7.3 Run2 7/21/201111:21:00 18.2 2.3 7.3 Run 2 7/21/201111:21:20 18.1 2.3 6.9 Run 2 7/21/201111:21:40 18.2 2.3 6.8 Run 2 7/21/2011 11:22:00 18.2 2.3 6.7 7/21/201111:22:20 18.2 2.3 6.7 7/21/201111:22:40 18.1 2.3 6.7 7/21/201111:23:00 18.2 2.3 6.5 7/21/201111:23:20 18.2 2.3 6.4 7/21/201111:23:40 18.1 2.3 6.4 7/21/201111:24:00 18.1 2.3 6.3 7/21/201111:24:20 18.1 2.3 6.2 7/21/2011 11:24:40 18.1 2.3 6.2 7/21/201111:25:00 18.1 2.3 6.2 Bias Drift Check 7/21/201111:25:20 18.2 2.3 6.4 Bias Drift Check 7/21/201111:25:40 18.2 2.3 6.4 Bias Drift Check 7/21/201111:26:00 8.5 1.1 6.2 Bias Drift Check 7/21/201111:26:20 0.7 0.3 4.9 Bias Drift Check 7/21/201111:26:40 0.1 0.1 2.4 Bias Drift Check 7/21/201111:27:00 0.0 0.1 0.9 Bias Drift Check 7/21/201111:27:20 0.0 0.1 0.6 Bias Drift Check 7/21/201111:27:40 0.0 0.1 0.4 Bias DriftCheck 7/21/201111:28:00 0.0 0.1 0.4 Bias Drift Check 7/21/201111:28:20 0.0 0.1 0.4 N2 Zero Bias Drift Check 7/21/201111:28:40 0.1 0.1 1.4 Bias Drift Check 7/21/201111:29:00 0.0 0.1 15.8 N2 Zero Bias Drift Check 7/21/201111:29:20 0.0 0.1 20.2 Bias Drift Check 7/21/201111:29:40 0.0 0.1 21.5 Bias Drift Check 7/21/201111:30:00 0.0 0.1 21.6 Bias DriftCheck 7/21/201111:30:20 0.0 0.1 22.5 Bias Drift Check 7/21/201111:30:40 0.0 0.1 22.8 Bias Drift Check 7/21/201111:31:00 0.0 0.1 22.9 Bias Drift Check 7/21/201111:31:20 0.0 0.1 23.2 Bias Drift Check 7/21/201111:31:40 0.0 0.1 23.5 Bias Drift Check 7/21/201111:32:00 0.0 0.1 23.7 Bias Drift Check 7/21/201111:32:20 0.0 0.1 23.8 Bias Drift Check 7/21/201111:32:40 0.0 0.1 23.7 Bias Drift Check 7/21/201111:33:00 0.0 0.1 12.3 Bias Drift Check 7/21/201111:33:20 0.0 0.1 8.5 Bias Drift Check 7/21/201111:33:40 0.0 0.1 7.3 Bias Drift Check 7/21/201111:34:00 0.0 0.1 7.0 Bias Drift Check 7/21/201111:34:20 0.0 0.1 6.8 Bias DriftCheck 7/21/201111:34:40 0.0 0.1 6.7 Bias DriftCheck 7/21/201111:35:00 0.0 0.1 6.5 Bias Drift Check

Page 12 of22 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2• 

### % 502• ppm Notes 7/21/201111:15:00 18.2 2.3 7.3 Run 2 7/21/201111:15:20 18.2 2.3 7.4 Run 2 7/21/201111:15:40 18.2 2.3 7.6 Run 2 7/21/201111:16:00 18.2 2.3 7.8 Run 2 7/21/201111:16:20 18.2 2.3 7.8 Run 2 7/21/201111:16:40 18.2 2.3 7.8 Run 2 7/21/201111:17:00 18.2 2.3 7.8 Run 2 7/21/201111:17:20 18.2 2.3 7.8 Run2 7/21/201111:17:40 18.2 2.3 7.8 Run2 7/21/201111:18:00 18.2 2.3 7.8 Run2 7/21/201111:18:20 18.2 2.3 7.8 Run 2 7/21/201111:18:40 18.2 2.3 7.7 Run 2 7/21/201111:19:00 18.2 2.3 7.7 Run 2 7/21/201111:19:20 18.2 2.3 7.7 Run 2 7/21/201111:19:40 18.2 2.3 7.6 Run 2 7/21/201111:20:00 18.2 2.3 7.5 Run 2 7/21/201111:20:20 18.2 2.3 7.4 Run 2 7/21/201111:20:40 18.2 2.3 7.3 Run2 7/21/201111:21:00 18.2 2.3 7.3 Run 2 7/21/201111:21:20 18.1 2.3 6.9 Run 2 7/21/201111:21:40 18.2 2.3 6.8 Run 2 7/21/2011 11:22:00 18.2 2.3 6.7 7/21/201111:22:20 18.2 2.3 6.7 7/21/201111:22:40 18.1 2.3 6.7 7/21/201111:23:00 18.2 2.3 6.5 7/21/201111:23:20 18.2 2.3 6.4 7/21/201111:23:40 18.1 2.3 6.4 7/21/201111:24:00 18.1 2.3 6.3 7/21/201111:24:20 18.1 2.3 6.2 7/21/2011 11:24:40 18.1 2.3 6.2 7/21/201111:25:00 18.1 2.3 6.2 Bias Drift Check 7/21/201111:25:20 18.2 2.3 6.4 Bias Drift Check 7/21/201111:25:40 18.2 2.3 6.4 Bias Drift Check 7/21/201111:26:00 8.5 1.1 6.2 Bias Drift Check 7/21/201111:26:20 0.7 0.3 4.9 Bias Drift Check 7/21/201111:26:40 0.1 0.1 2.4 Bias Drift Check 7/21/201111:27:00 0.0 0.1 0.9 Bias Drift Check 7/21/201111:27:20 0.0 0.1 0.6 Bias Drift Check 7/21/201111:27:40 0.0 0.1 0.4 Bias DriftCheck 7/21/201111:28:00 0.0 0.1 0.4 Bias Drift Check 7/21/201111:28:20 0.0 0.1 0.4 N2 Zero Bias Drift Check 7/21/201111:28:40 0.1 0.1 1.4 Bias Drift Check 7/21/201111:29:00 0.0 0.1 15.8 N2 Zero Bias Drift Check 7/21/201111:29:20 0.0 0.1 20.2 Bias Drift Check 7/21/201111:29:40 0.0 0.1 21.5 Bias Drift Check 7/21/201111:30:00 0.0 0.1 21.6 Bias DriftCheck 7/21/201111:30:20 0.0 0.1 22.5 Bias Drift Check 7/21/201111:30:40 0.0 0.1 22.8 Bias Drift Check 7/21/201111:31:00 0.0 0.1 22.9 Bias Drift Check 7/21/201111:31:20 0.0 0.1 23.2 Bias Drift Check 7/21/201111:31:40 0.0 0.1 23.5 Bias Drift Check 7/21/201111:32:00 0.0 0.1 23.7 Bias Drift Check 7/21/201111:32:20 0.0 0.1 23.8 Bias Drift Check 7/21/201111:32:40 0.0 0.1 23.7 Bias Drift Check 7/21/201111:33:00 0.0 0.1 12.3 Bias Drift Check 7/21/201111:33:20 0.0 0.1 8.5 Bias Drift Check 7/21/201111:33:40 0.0 0.1 7.3 Bias Drift Check 7/21/201111:34:00 0.0 0.1 7.0 Bias Drift Check 7/21/201111:34:20 0.0 0.1 6.8 Bias DriftCheck 7/21/201111:34:40 0.0 0.1 6.7 Bias DriftCheck 7/21/201111:35:00 0.0 0.1 6.5 Bias Drift Check

Page 12 of22ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02. ppm Notes 7/21/201111:35:20 0.2 0.1 6.6 Bias Drift Check 7/21/201111:35:40 15.2 1.9 10.2 Bias Drift Check 7/21/201111:36:00 18.1 2.2 10.8 Bias Drift Check 7/21/201111:36:20 12.5 1.6 10.7 Bias Drift Check 7/21/201111:36:40 9.0 7.9 9.4 Bias DriftCheck 7/21/201111:37:00 8.8 8.7 4.7 Bias DriftCheck 7/21/201111:37:20 8.9 8.9 1.0 Bias Drift Check 7/21/201111:37:40 8.9 8.9 0.3 Bias Drift Check 7/21/201111:38:00 8.9 8.9 0.0 Bias Drift Check 7/21/201111:38:20 8.9 9.0 -0.1 Bias Drift Check 7/21/201111:38:40 8.9 9.0 -0.1 02 9.0/C029.0 Bias Drift Check 7/21/201111:39:00 7.0 6.9 -0.2 Bias Drift Check 7/21/201111:39:20 0.1 0.4 6.9 Bias Drift Check 7/21/201111:39:40 0.0 0.2 18.0 Bias Drift Check 7/21/201111:40:00 0.0 0.2 21.6 Bias Drift Check 7/21/201111:40:20 0.0 0.2 22.8 Bias DriftCheck 7/21/201111:40:40 0.0 0.2 23.4 Bias DriftCheck 7/21/201111:41:00 0.0 0.1 24.1 S02 27.0 ppm Bias Drift Check 7/21/201111:41:20 0.9 0.2 27.0 S0227.0 ppm Bias Drift Check 7/21/201111:41:40 17.0 2.2 29.0 Bias Drift Check 7/21/201111:42:00 9.5 1.2 13.2 Bias Drift Check 7/21/201111:42:20 0.1 0.1 21.1 7/21/201111:42:40 0.0 0.1 23.3 7/21/201111:43:00 0.0 0.1 24.5 7/21/201111:43:20 0.0 0.1 24.5 7/21/201111:43:40 0.0 0.1 24.6 7/21/201111:44:00 0.0 0.1 24.7 7/21/201111:44:20 0.0 0.1 25.2 7/21/201111:44:40 0.0 0.1 25.0 7/21/201111:45:00 0.0 0.1 24.8 7/21/201111:45:20 0.0 0.1 25.0 7/21/201111:45:40 3.7 0.5 26.2 Standby In Stack 7/21/201111:46:00 18.0 2.1 29.0 Standby In Stack 7/21/201111:46:20 18.4 2.0 12.5 Standby In Stack 7/21/201111:46:40 18.4 2.0 10.4 Standby In Stack

7/21/201111:47:00 18.4 2.0 10.0 Standby In Stack 7/21/201111:47:20 18.4 2.0 9.6 Standby In Stack 7/21/201111:47:40 18.5 2.0 9.4 Standby In Stack 7/21/201111:48:00 18.4 2.0 9.0 Standby In Stack 7/21/201111:48:20 18.4 2.0 8.6 Standby In Stack 7/21/201111:48:40 18.5 2.0 8.4 Standby In Stack 7/21/201111:49:00 18.5 2.0 7.7 Standby In Stack 7/21/201111:49:20 18.5 2.0 7.5 Standby In Stack 7/21/201111:49:40 18.5 2.0 7.2 Standby In Stack 7/21/201111:50:00 18.4 2.1 6.9 Standby In Stack 7/21/201111:50:20 18.5 2.0 6.6 Standby In Stack 7/21/201111:50:40 18.4 2.1 6.1 Standby In Stack 7/21/201111:51:00 18.4 2.1 5.9 Standby In Stack 7/21/201111:51:20 18.4 2.1 5.7 Standby In Stack 7/21/201111:51:40 18.4 2.1 5.6 Standby In Stack 7/21/201111:52:00 18.4 2.1 5.4 Standby In Stack 7/21/201111:52:20 18.4 2.1 5.2 Standby In Stack 7/21/201111:52:40 18.4 2.1 5.0 Standby In Stack 7/21/201111:53:00 18.4 2.1 5.0 Standby In Stack 7/21/201111:53:20 18.4 2.1 5.0 Standby In Stack 7/21/201111:53:40 18.4 2.1 5.0 Standby In Stack 7/21/201111:54:00 18.4 2.1 5.0 Standby In Stack 7/21/201111:54:20 18.4 2.1 4.9 Standby In Stack 7/21/201111:54:40 18.4 2.1 5.0 Standby In Stack 7/21/201111:55:00 18.4 2.1 5.0 Standby In Stack

Page 13 of22 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02. ppm Notes 7/21/201111:35:20 0.2 0.1 6.6 Bias Drift Check 7/21/201111:35:40 15.2 1.9 10.2 Bias Drift Check 7/21/201111:36:00 18.1 2.2 10.8 Bias Drift Check 7/21/201111:36:20 12.5 1.6 10.7 Bias Drift Check 7/21/201111:36:40 9.0 7.9 9.4 Bias DriftCheck 7/21/201111:37:00 8.8 8.7 4.7 Bias DriftCheck 7/21/201111:37:20 8.9 8.9 1.0 Bias Drift Check 7/21/201111:37:40 8.9 8.9 0.3 Bias Drift Check 7/21/201111:38:00 8.9 8.9 0.0 Bias Drift Check 7/21/201111:38:20 8.9 9.0 -0.1 Bias Drift Check 7/21/201111:38:40 8.9 9.0 -0.1 02 9.0/C029.0 Bias Drift Check 7/21/201111:39:00 7.0 6.9 -0.2 Bias Drift Check 7/21/201111:39:20 0.1 0.4 6.9 Bias Drift Check 7/21/201111:39:40 0.0 0.2 18.0 Bias Drift Check 7/21/201111:40:00 0.0 0.2 21.6 Bias Drift Check 7/21/201111:40:20 0.0 0.2 22.8 Bias DriftCheck 7/21/201111:40:40 0.0 0.2 23.4 Bias DriftCheck 7/21/201111:41:00 0.0 0.1 24.1 S02 27.0 ppm Bias Drift Check 7/21/201111:41:20 0.9 0.2 27.0 S0227.0 ppm Bias Drift Check 7/21/201111:41:40 17.0 2.2 29.0 Bias Drift Check 7/21/201111:42:00 9.5 1.2 13.2 Bias Drift Check 7/21/201111:42:20 0.1 0.1 21.1 7/21/201111:42:40 0.0 0.1 23.3 7/21/201111:43:00 0.0 0.1 24.5 7/21/201111:43:20 0.0 0.1 24.5 7/21/201111:43:40 0.0 0.1 24.6 7/21/201111:44:00 0.0 0.1 24.7 7/21/201111:44:20 0.0 0.1 25.2 7/21/201111:44:40 0.0 0.1 25.0 7/21/201111:45:00 0.0 0.1 24.8 7/21/201111:45:20 0.0 0.1 25.0 7/21/201111:45:40 3.7 0.5 26.2 Standby In Stack 7/21/201111:46:00 18.0 2.1 29.0 Standby In Stack 7/21/201111:46:20 18.4 2.0 12.5 Standby In Stack 7/21/201111:46:40 18.4 2.0 10.4 Standby In Stack

7/21/201111:47:00 18.4 2.0 10.0 Standby In Stack 7/21/201111:47:20 18.4 2.0 9.6 Standby In Stack 7/21/201111:47:40 18.5 2.0 9.4 Standby In Stack 7/21/201111:48:00 18.4 2.0 9.0 Standby In Stack 7/21/201111:48:20 18.4 2.0 8.6 Standby In Stack 7/21/201111:48:40 18.5 2.0 8.4 Standby In Stack 7/21/201111:49:00 18.5 2.0 7.7 Standby In Stack 7/21/201111:49:20 18.5 2.0 7.5 Standby In Stack 7/21/201111:49:40 18.5 2.0 7.2 Standby In Stack 7/21/201111:50:00 18.4 2.1 6.9 Standby In Stack 7/21/201111:50:20 18.5 2.0 6.6 Standby In Stack 7/21/201111:50:40 18.4 2.1 6.1 Standby In Stack 7/21/201111:51:00 18.4 2.1 5.9 Standby In Stack 7/21/201111:51:20 18.4 2.1 5.7 Standby In Stack 7/21/201111:51:40 18.4 2.1 5.6 Standby In Stack 7/21/201111:52:00 18.4 2.1 5.4 Standby In Stack 7/21/201111:52:20 18.4 2.1 5.2 Standby In Stack 7/21/201111:52:40 18.4 2.1 5.0 Standby In Stack 7/21/201111:53:00 18.4 2.1 5.0 Standby In Stack 7/21/201111:53:20 18.4 2.1 5.0 Standby In Stack 7/21/201111:53:40 18.4 2.1 5.0 Standby In Stack 7/21/201111:54:00 18.4 2.1 5.0 Standby In Stack 7/21/201111:54:20 18.4 2.1 4.9 Standby In Stack 7/21/201111:54:40 18.4 2.1 5.0 Standby In Stack 7/21/201111:55:00 18.4 2.1 5.0 Standby In Stack

Page 13 of22

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia. Minnesota Furnace Stack C
TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/21/201111:55:20 18.4 2.1 5.0 

### Standby In Stack 7/21/201111:55:40 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:56:00 18.4 2.1 5.0 

### Standby In Stack 7/21/201111:56:20 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:56:40 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:57:00 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:57:20 18.4 2.1 4.8 

### Standby In Stack 7/21/201111:57:40 18.4 2.1 4.8 

### Standby In Stack 7/21/201111:58:00 18.3 2.1 4.9 

### Standby In Stack 7/21/201111:58:20 18.3 2.1 4.9 

### Standby In Stack 7/21/201111:58:40 18.3 2.1 4.7 

### Standby In Stack 7/21/201111:59:00 18.3 2.1 4.8 

### Standby In Stack 7/21/201111:59:20 18.3 2.1 4.7 

### Standby In Stack 7/21/201111:59:40 18.3 2.1 4.8 

### Standby In Stack 7/21/201112:00:00 18.3 2.1 4.9 

### Standby In Stack 7/21/201112:00:20 18.3 2.1 4.8 

### Standby In Stack 7/21/201112:00:40 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:01:00 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:01:20 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:01:40 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:02:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:02:20 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:02:40 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:03:00 18.3 2.2 4.3 

### Standby In Stack 7/21/201112:03:20 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:03:40 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:04:00 18.3 2.2 4.1 

### Standby In Stack 7/21/201112:04:20 18.3 2.2 4.1 

### Standby In Stack 7/21/201112:04:40 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:05:00 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:05:20 18.3 2.2 4.3 

### Standby In Stack 7/21/201112:05:40 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:06:00 18.4 2.1 4.6 

### Standby In Stack 7/21/201112:06:20 18.3 2.1 4.7 

### Standby In Stack 7/21/201112:06:40 18.3 2.1 4.9 

### Standby In Stack 7/21/201112:07:00 18.3 2.1 5.0 

### Standby In Stack 7/21/201112:07:20 18.3 2.1 5.0 

### Standby In Stack 7/21/201112:07:40 18.3 2.1 5.2 

### Standby In Stack 7/21/201112:08:00 18.3 2.1 5.2 

### Standby In Stack 7/21/201112:08:20 18.3 2.1 5.2 

### Standby In Stack 7/21/201112:08:40 18.3 2.1 5.3 

### Standby In Stack 7/21/201112:09:00 18.4 2.1 5.2 

### Standby In Stack 7/21/201112:09:20 18.4 2.1 5.0 

### Standby In Stack 7/21/201112:09:40 18.3 2.1 4.9 

### Standby In Stack 7/21/201112:10:00 18.3 2.2 4.8 

### Standby In Stack 7/21/201112:10:20 18.3 2.1 4.8 

### Standby In Stack 7/21/201112:10:40 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:11:00 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:11:20 18.3 2.2 4.8 

### Standby In Stack 7/21/201112:11:40 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:12:00 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:12:20 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:12:40 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:13:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:13:20 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:13:40 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:14:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:14:20 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:14:40 18.3 2.3 4.3 

### Standby In Stack 7/21/201112:15:00 18.3 2.3 4.4 

### Standby In Stack 7/21/201112:15:20 18.3 2.2 4.4 

### Standby In Stack
Page 14

### of22 

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia. Minnesota Furnace Stack C
TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/21/201111:55:20 18.4 2.1 5.0 

### Standby In Stack 7/21/201111:55:40 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:56:00 18.4 2.1 5.0 

### Standby In Stack 7/21/201111:56:20 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:56:40 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:57:00 18.4 2.1 4.9 

### Standby In Stack 7/21/201111:57:20 18.4 2.1 4.8 

### Standby In Stack 7/21/201111:57:40 18.4 2.1 4.8 

### Standby In Stack 7/21/201111:58:00 18.3 2.1 4.9 

### Standby In Stack 7/21/201111:58:20 18.3 2.1 4.9 

### Standby In Stack 7/21/201111:58:40 18.3 2.1 4.7 

### Standby In Stack 7/21/201111:59:00 18.3 2.1 4.8 

### Standby In Stack 7/21/201111:59:20 18.3 2.1 4.7 

### Standby In Stack 7/21/201111:59:40 18.3 2.1 4.8 

### Standby In Stack 7/21/201112:00:00 18.3 2.1 4.9 

### Standby In Stack 7/21/201112:00:20 18.3 2.1 4.8 

### Standby In Stack 7/21/201112:00:40 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:01:00 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:01:20 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:01:40 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:02:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:02:20 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:02:40 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:03:00 18.3 2.2 4.3 

### Standby In Stack 7/21/201112:03:20 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:03:40 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:04:00 18.3 2.2 4.1 

### Standby In Stack 7/21/201112:04:20 18.3 2.2 4.1 

### Standby In Stack 7/21/201112:04:40 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:05:00 18.3 2.2 4.2 

### Standby In Stack 7/21/201112:05:20 18.3 2.2 4.3 

### Standby In Stack 7/21/201112:05:40 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:06:00 18.4 2.1 4.6 

### Standby In Stack 7/21/201112:06:20 18.3 2.1 4.7 

### Standby In Stack 7/21/201112:06:40 18.3 2.1 4.9 

### Standby In Stack 7/21/201112:07:00 18.3 2.1 5.0 

### Standby In Stack 7/21/201112:07:20 18.3 2.1 5.0 

### Standby In Stack 7/21/201112:07:40 18.3 2.1 5.2 

### Standby In Stack 7/21/201112:08:00 18.3 2.1 5.2 

### Standby In Stack 7/21/201112:08:20 18.3 2.1 5.2 

### Standby In Stack 7/21/201112:08:40 18.3 2.1 5.3 

### Standby In Stack 7/21/201112:09:00 18.4 2.1 5.2 

### Standby In Stack 7/21/201112:09:20 18.4 2.1 5.0 

### Standby In Stack 7/21/201112:09:40 18.3 2.1 4.9 

### Standby In Stack 7/21/201112:10:00 18.3 2.2 4.8 

### Standby In Stack 7/21/201112:10:20 18.3 2.1 4.8 

### Standby In Stack 7/21/201112:10:40 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:11:00 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:11:20 18.3 2.2 4.8 

### Standby In Stack 7/21/201112:11:40 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:12:00 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:12:20 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:12:40 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:13:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:13:20 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:13:40 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:14:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:14:20 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:14:40 18.3 2.3 4.3 

### Standby In Stack 7/21/201112:15:00 18.3 2.3 4.4 

### Standby In Stack 7/21/201112:15:20 18.3 2.2 4.4 

### Standby In Stack
Page 14

### of22

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia. Minnesota Furnace Stack C
TIMESTAMP O2 

### .% CO2 •

### % S02. ppm Notes 7/21/201112:15:40 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:16:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:16:20 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:16:40 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:17:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:17:20 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:17:40 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:18:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:18:20 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:18:40 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:19:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:19:20 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:19:40 18.3 2.2 4.9 

### Standby In Stack 7/21/201112:20:00 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:20:20 18.3 2.2 5.1 

### Standby In Stack 7/21/201112:20:40 18.3 2.2 5.2 

### Standby In Stack 7/21/201112:21:00 18.3 2.2 5.1 

### Standby In Stack 7/21/201112:21:20 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:21:40 18.3 2.2 5.1 

### Standby In Stack 7/21/201112:22:00 18.3 2.2 5.3 

### Standby In Stack 7/21/201112:22:20 18.3 2.2 5.5 

### Standby In Stack 7/21/201112:22:40 18.3 2.2 5.4 

### Standby In Stack 7/21/201112:23:00 18.3 2.2 5.4 

### Standby In Stack 7/21/201112:23:20 18.3 2.2 5.3 

### Standby In Stack 7/21/201112:23:40 18.3 2.2 5.2 

### Standby In Stack 7/21/201112:24:00 18.2 2.3 5.3 

### Standby In Stack 7/21/201112:24:20 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:24:40 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:25:00 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:25:20 18.2 2.3 5.5 

### Standby In Stack 7/21/201112:25:40 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:26:00 18.2 2.3 5.3 

### Standby In Stack 7/21/201112:26:20 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:26:40 18.2 2.3 5.5 

### Standby In Stack 7/21/201112:27:00 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:27:20 18.2 2.3 5.6 

### Standby In Stack 7/21/201112:27:40 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:28:00 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:28:20 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:28:40 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:29:00 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:29:20 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:29:40 18.1 2.4 5.3 

### Standby In Stack 7/21/201112:30:00 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:30:20 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:30:40 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:31:00 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:31:20 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:31:40 18.1 2.4 5.6 

### Standby In Stack 7/21/201112:32:00 18.1 2.3 5.7 

### Standby In Stack 7/21/201112:32:20 18.1 2.3 5.9 

### Standby In Stack 7/21/201112:32:40 18.1 2.3 6.0 

### Standby In Stack 7/21/201112:33:00 18.2 2.3 6.1 

### Standby In Stack 7/21/201112:33:20 18.1 2.3 6.3 

### Standby In Stack 7/21/201112:33:40 18.1 2.3 6.5 

### Standby In Stack 7/21/201112:34:00 18.1 2.3 6.7 

### Standby In Stack 7/21/201112:34:20 18.1 2.3 6.8 

### Standby In Stack 7/21/201112:34:40 18.2 2.3 7.0 

### Standby In Stack 7/21/201112:35:00 18.2 2.3 7.2 

### Standby In Stack 7/21/201112:35:20 18.2 2.3 7.2 

### Standby In Stack 7/21/201112:35:40 18.2 2.3 7.1 

### Standby In Stack
Page 15of22 

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia. Minnesota Furnace Stack C
TIMESTAMP O2 

### .% CO2 •

### % S02. ppm Notes 7/21/201112:15:40 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:16:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:16:20 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:16:40 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:17:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:17:20 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:17:40 18.3 2.2 4.4 

### Standby In Stack 7/21/201112:18:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:18:20 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:18:40 18.3 2.2 4.6 

### Standby In Stack 7/21/201112:19:00 18.3 2.2 4.5 

### Standby In Stack 7/21/201112:19:20 18.3 2.2 4.7 

### Standby In Stack 7/21/201112:19:40 18.3 2.2 4.9 

### Standby In Stack 7/21/201112:20:00 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:20:20 18.3 2.2 5.1 

### Standby In Stack 7/21/201112:20:40 18.3 2.2 5.2 

### Standby In Stack 7/21/201112:21:00 18.3 2.2 5.1 

### Standby In Stack 7/21/201112:21:20 18.3 2.2 5.0 

### Standby In Stack 7/21/201112:21:40 18.3 2.2 5.1 

### Standby In Stack 7/21/201112:22:00 18.3 2.2 5.3 

### Standby In Stack 7/21/201112:22:20 18.3 2.2 5.5 

### Standby In Stack 7/21/201112:22:40 18.3 2.2 5.4 

### Standby In Stack 7/21/201112:23:00 18.3 2.2 5.4 

### Standby In Stack 7/21/201112:23:20 18.3 2.2 5.3 

### Standby In Stack 7/21/201112:23:40 18.3 2.2 5.2 

### Standby In Stack 7/21/201112:24:00 18.2 2.3 5.3 

### Standby In Stack 7/21/201112:24:20 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:24:40 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:25:00 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:25:20 18.2 2.3 5.5 

### Standby In Stack 7/21/201112:25:40 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:26:00 18.2 2.3 5.3 

### Standby In Stack 7/21/201112:26:20 18.2 2.3 5.4 

### Standby In Stack 7/21/201112:26:40 18.2 2.3 5.5 

### Standby In Stack 7/21/201112:27:00 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:27:20 18.2 2.3 5.6 

### Standby In Stack 7/21/201112:27:40 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:28:00 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:28:20 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:28:40 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:29:00 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:29:20 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:29:40 18.1 2.4 5.3 

### Standby In Stack 7/21/201112:30:00 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:30:20 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:30:40 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:31:00 18.1 2.4 5.4 

### Standby In Stack 7/21/201112:31:20 18.1 2.4 5.5 

### Standby In Stack 7/21/201112:31:40 18.1 2.4 5.6 

### Standby In Stack 7/21/201112:32:00 18.1 2.3 5.7 

### Standby In Stack 7/21/201112:32:20 18.1 2.3 5.9 

### Standby In Stack 7/21/201112:32:40 18.1 2.3 6.0 

### Standby In Stack 7/21/201112:33:00 18.2 2.3 6.1 

### Standby In Stack 7/21/201112:33:20 18.1 2.3 6.3 

### Standby In Stack 7/21/201112:33:40 18.1 2.3 6.5 

### Standby In Stack 7/21/201112:34:00 18.1 2.3 6.7 

### Standby In Stack 7/21/201112:34:20 18.1 2.3 6.8 

### Standby In Stack 7/21/201112:34:40 18.2 2.3 7.0 

### Standby In Stack 7/21/201112:35:00 18.2 2.3 7.2 

### Standby In Stack 7/21/201112:35:20 18.2 2.3 7.2 

### Standby In Stack 7/21/201112:35:40 18.2 2.3 7.1 

### Standby In Stack
Page 15of22

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia, Minnesota Furnace StackC
TIMESTAMP O2 

### ,% CO2 •

### % S02. ppm Notes 7/21/201112:36:00 18.1 2.3 7.1 

### Standby In Stack 7/21/201112:36:20 18.2 2.3 7.0 

### Standby In Stack 7/21/201112:36:40 18.2 2.3 - 6.9 

### Standby In Stack 7/21/201112:37:00 18.2 2.3 7.0 

### Standby In Stack 7/21/201112:37:20 18.1 2.3 7.1 

### Standby In Stack 7/21/201112:37:40 18.2 2.3 6.9 

### Standby In Stack 7/21/201112:38:00 18.2 2.3 6.7 

### Standby In Stack 7/21/201112:38:20 18.2 2.3 6.6 

### Standby In Stack 7/21/201112:38:40 18.1 2.3 6.4 

### Standby In Stack 7/21/201112:39:00 18.1 2.3 6.2 

### Standby In Stack 7/21/201112:39:20 18.1 2.4 6.3 

### Standby In Stack 7/21/201112:39:40 18.1 2.3 6.1 

### Standby In Stack 7/21/201112:40:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:40:20 18.1 2.3 5.8 

### Standby In Stack 7/21/201112:40:40 18.2 2.3 5.7 

### Standby In Stack 7/21/201112:41:00 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:41:20 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:41:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:42:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:42:20 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:42:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:43:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:43:20 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:43:40 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:44:00 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:44:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:44:40 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:45:00 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:45:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:45:40 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:46:00 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:46:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:46:40 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:47:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:47:20 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:47:40 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:48:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:48:20 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:48:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:49:00 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:49:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:49:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:50:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:50:20 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:50:40 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:51:00 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:51:20 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:51:40 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:52:00 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:52:20 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:52:40 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:53:00 18.1 2.3 5.9 

### Standby In Stack 7/21/201112:53:20 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:53:40 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:54:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:54:20 18.1 2.3 5.6 

### Standby In Stack 7/21/201112:54:40 18.1 2.3 5.7 

### Standby In Stack 7/21/201112:55:00 18.1 2.3 5.7 

### Standby In Stack 7/21/201112:55:20 18.1 2.3 5.6 

### Standby In Stack 7/21/201112:55:40 18.1 2.3 5.4 

### Standby In Stack 7/21/201112:56:00 18.1 2.3 5.3 

### Standby In Stack
Page 16 of22 

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia, Minnesota Furnace StackC
TIMESTAMP O2 

### ,% CO2 •

### % S02. ppm Notes 7/21/201112:36:00 18.1 2.3 7.1 

### Standby In Stack 7/21/201112:36:20 18.2 2.3 7.0 

### Standby In Stack 7/21/201112:36:40 18.2 2.3 - 6.9 

### Standby In Stack 7/21/201112:37:00 18.2 2.3 7.0 

### Standby In Stack 7/21/201112:37:20 18.1 2.3 7.1 

### Standby In Stack 7/21/201112:37:40 18.2 2.3 6.9 

### Standby In Stack 7/21/201112:38:00 18.2 2.3 6.7 

### Standby In Stack 7/21/201112:38:20 18.2 2.3 6.6 

### Standby In Stack 7/21/201112:38:40 18.1 2.3 6.4 

### Standby In Stack 7/21/201112:39:00 18.1 2.3 6.2 

### Standby In Stack 7/21/201112:39:20 18.1 2.4 6.3 

### Standby In Stack 7/21/201112:39:40 18.1 2.3 6.1 

### Standby In Stack 7/21/201112:40:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:40:20 18.1 2.3 5.8 

### Standby In Stack 7/21/201112:40:40 18.2 2.3 5.7 

### Standby In Stack 7/21/201112:41:00 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:41:20 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:41:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:42:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:42:20 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:42:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:43:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:43:20 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:43:40 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:44:00 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:44:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:44:40 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:45:00 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:45:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:45:40 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:46:00 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:46:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:46:40 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:47:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:47:20 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:47:40 18.1 2.4 5.7 

### Standby In Stack 7/21/201112:48:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:48:20 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:48:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:49:00 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:49:20 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:49:40 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:50:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:50:20 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:50:40 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:51:00 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:51:20 18.1 2.4 6.1 

### Standby In Stack 7/21/201112:51:40 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:52:00 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:52:20 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:52:40 18.1 2.4 6.0 

### Standby In Stack 7/21/201112:53:00 18.1 2.3 5.9 

### Standby In Stack 7/21/201112:53:20 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:53:40 18.1 2.4 5.9 

### Standby In Stack 7/21/201112:54:00 18.1 2.4 5.8 

### Standby In Stack 7/21/201112:54:20 18.1 2.3 5.6 

### Standby In Stack 7/21/201112:54:40 18.1 2.3 5.7 

### Standby In Stack 7/21/201112:55:00 18.1 2.3 5.7 

### Standby In Stack 7/21/201112:55:20 18.1 2.3 5.6 

### Standby In Stack 7/21/201112:55:40 18.1 2.3 5.4 

### Standby In Stack 7/21/201112:56:00 18.1 2.3 5.3 

### Standby In Stack
Page 16 of22

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia. Minnesota Furnace Stack C
TIMESTAMP O2 

### .% CO2 •

### % S02. ppm Notes 7/21/201112:56:20 18.1 2.3 5.3 

### Standby In Stack 7/21/201112:56:40 18.1 2.3 5.2 

### Standby In Stack 7/21/201112:57:00 18.1 2.4 5.1 

### Standby In Stack 7/21/201112:57:20 18.1 2.4 5.0 

### Standby In Stack 7/21/201112:57:40 18.2 2.3 5.0 

### Standby In Stack 7/21/201112:58:00 18.2 2.3 5.0 

### Standby In Stack 7/21/201112:58:20 18.2 2.3 4.8 

### Standby In Stack 7/21/201112:58:40 18.2 2.3 4.8 

### Standby In Stack 7/21/201112:59:00 18.2 2.3 4.9 

### Standby In Stack 7/21/201112:59:20 18.2 2.3 4.9 

### Standby In Stack 7/21/201112:59:40 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:00:00 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:00:20 18.2 2.2 4.9 

### Standby In Stack 7/21/201113:00:40 18.2 2.3 4.8 

### Standby In Stack 7/21/201113:01:00 18.2 2.2 4.8 

### Standby In Stack 7/21/201113:01:20 18.2 2.2 4.7 

### Standby In Stack 7/21/201113:01:40 18.2 2.2 4.8 

### Standby In Stack 7/21/201113:02:00 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:02:20 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:02:40 18.2 2.2 4.9 

### Standby In Stack 7/21/201113:03:00 18.2 2.3 4.8 

### Standby In Stack 7/21/201113:03:20 18.2 2.3 4.6 

### Standby In Stack 7/21/201113:03:40 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:04:00 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:04:20 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:04:40 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:05:00 18.2 2.3 4.2 

### Standby In Stack 7/21/201113:05:20 18.2 2.3 4.1 

### Standby In Stack 7/21/201113:05:40 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:06:00 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:06:20 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:06:40 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:07:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:07:20 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:07:40 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:08:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:08:20 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:08:40 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:09:00 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:09:20 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:09:40 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:10:00 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:10:20 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:10:40 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:11:00 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:11:20 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:11:40 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:12:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:12:20 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:12:40 18.3 2.2 3.5 

### Standby In Stack 7/21/201113:13:00 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:13:20 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:13:40 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:14:00 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:14:20 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:14:40 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:15:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:15:20 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:15:40 18.2 2.3 3.3 

### Standby In Stack 7/21/201113:16:00 18.2 2.3 3.3 

### Standby In Stack 7/21/201113:16:20 18.2 2.3 3.2 

### Standby In Stack
Page 17 of22 

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 

### Virginia. Minnesota Furnace Stack C
TIMESTAMP O2 

### .% CO2 •

### % S02. ppm Notes 7/21/201112:56:20 18.1 2.3 5.3 

### Standby In Stack 7/21/201112:56:40 18.1 2.3 5.2 

### Standby In Stack 7/21/201112:57:00 18.1 2.4 5.1 

### Standby In Stack 7/21/201112:57:20 18.1 2.4 5.0 

### Standby In Stack 7/21/201112:57:40 18.2 2.3 5.0 

### Standby In Stack 7/21/201112:58:00 18.2 2.3 5.0 

### Standby In Stack 7/21/201112:58:20 18.2 2.3 4.8 

### Standby In Stack 7/21/201112:58:40 18.2 2.3 4.8 

### Standby In Stack 7/21/201112:59:00 18.2 2.3 4.9 

### Standby In Stack 7/21/201112:59:20 18.2 2.3 4.9 

### Standby In Stack 7/21/201112:59:40 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:00:00 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:00:20 18.2 2.2 4.9 

### Standby In Stack 7/21/201113:00:40 18.2 2.3 4.8 

### Standby In Stack 7/21/201113:01:00 18.2 2.2 4.8 

### Standby In Stack 7/21/201113:01:20 18.2 2.2 4.7 

### Standby In Stack 7/21/201113:01:40 18.2 2.2 4.8 

### Standby In Stack 7/21/201113:02:00 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:02:20 18.2 2.3 4.9 

### Standby In Stack 7/21/201113:02:40 18.2 2.2 4.9 

### Standby In Stack 7/21/201113:03:00 18.2 2.3 4.8 

### Standby In Stack 7/21/201113:03:20 18.2 2.3 4.6 

### Standby In Stack 7/21/201113:03:40 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:04:00 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:04:20 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:04:40 18.2 2.3 4.4 

### Standby In Stack 7/21/201113:05:00 18.2 2.3 4.2 

### Standby In Stack 7/21/201113:05:20 18.2 2.3 4.1 

### Standby In Stack 7/21/201113:05:40 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:06:00 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:06:20 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:06:40 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:07:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:07:20 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:07:40 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:08:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:08:20 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:08:40 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:09:00 18.2 2.3 3.9 

### Standby In Stack 7/21/201113:09:20 18.2 2.3 3.8 

### Standby In Stack 7/21/201113:09:40 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:10:00 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:10:20 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:10:40 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:11:00 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:11:20 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:11:40 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:12:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:12:20 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:12:40 18.3 2.2 3.5 

### Standby In Stack 7/21/201113:13:00 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:13:20 18.2 2.3 3.4 

### Standby In Stack 7/21/201113:13:40 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:14:00 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:14:20 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:14:40 18.2 2.3 3.6 

### Standby In Stack 7/21/201113:15:00 18.2 2.3 3.7 

### Standby In Stack 7/21/201113:15:20 18.2 2.3 3.5 

### Standby In Stack 7/21/201113:15:40 18.2 2.3 3.3 

### Standby In Stack 7/21/201113:16:00 18.2 2.3 3.3 

### Standby In Stack 7/21/201113:16:20 18.2 2.3 3.2 

### Standby In Stack
Page 17 of22ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02. ppm Notes 7/21/201113:16:40 18.2 2.3 3.1 Standby In Stack 7/21/201113:17:00 18.2 2.3 3.2 Standby In Stack 7/21/201113:17:20 18.2 2.3 3.2 Standby In Stack 7/21/201113:17:40 18.2 2.4 3.1 Standby In Stack 7/21/201113:18:00 18.2 2.3 3.1 Standby In Stack 7/21/201113:18:20 18.2 2.3 3.0 Standby In Stack 7/21/201113:18:40 18.2 2.3 2.9 Standby In Stack 7/21/201113:19:00 18.2 2.3 2.8 Standby In Stack 7/21/201113:19:20 18.2 2.4 2.8 Standby In Stack 7/21/201113:19:40 18.1 2.4 2.8 Standby In Stack 7/21/201113:20:00 18.2 2.3 2.8 Standby In Stack 7/21/201113:20:20 18.2 2.3 2.8 Standby In Stack 7/21/201113:20:40 18.2 2.3 2.8 Standby In Stack 7/21/201113:21:00 18.2 2.3 2.9 Standby In Stack 7/21/201113:21:20 18.1 2.3 2.8 Standby In Stack 7/21/201113:21:40 18.2 2.3 2.8 Standby In Stack 7/21/201113:22:00 18.2 2.3 2.8 Standby In Stack 7/21/201113:22:20 18.2 2.3 2.7 Standby In Stack 7/21/201113:22:40 18.1 2.3 2.6 Standby In Stack 7/21/201113:23:00 18.1 2.4 2.6 Standby In Stack 7/21/201113:23:20 18.1 2.4 2.7 Standby In Stack 7/21/201113:23:40 18.1 2.4 2.7 Standby In Stack 7/21/201113:24:00 18.1 2.3 2.6 Standby In Stack 7/21/201113:24:20 18.1 2.4 2.7 Standby In Stack 7/21/201113:24:40 18.1 2.3 2.8 Standby In Stack 7/21/201113:25:00 18.1 2.4 2.7 In Stack 7/21/201113:25:20 18.1 2.3 2.7 In Stack 7/21/201113:25:40 18.1 2.3 2.7 In Stack 7/21/201113:26:00 18.1 2.3 2.8 In Stack 7/21/201113:26:20 18.1 2.3 2.9 In Stack 7/21/201113:26:40 18.1 2.3 2.8 In Stack 7/21/201113:27:00 18.1 2.3 2.8 In Stack 7/21/201113:27:20 18.1 2.3 2.8 Run 3 7/21/201113:27:40 18.1 2.3 2.9 Run 3 7/21/201113:28:00 18.2 2.3 3.0 Run 3 7/21/201113:28:20 18.2 2.3 3.1 Run 3 7/21/201113:28:40 18.2 2.3 3.0 Run 3 7/21/201113:29:00 18.2 2.3 3.0 Run 3 7/21/201113:29:20 18.1 2.3 3.1 Run 3 7/21/201113:29:40 18.2 2.3 3.2 Run 3 7/21/201113:30:00 18.1 2.3 3.2 Run 3 7/21/201113:30:20 18.2 2.3 3.3 Run 3 7/21/201113:30:40 18.2 2.3 3.3 Run 3 7/21/201113:31:00 18.1 2.3 3.4 Run 3 7/21/201113:31:20 18.1 2.3 3.3 Run 3 7/21/201113:31:40 18.2 2.3 3.4 Run 3 7/21/201113:32:00 18.2 2.3 3.4 Run 3 7/21/201113:32:20 18.2 2.3 3.2 Run 3 7/21/201113:32:40 18.2 2.3 3.1 Run 3 7/21/201113:33:00 18.2 2.3 3.2 Run 3 7/21/201113:33:20 18.2 2.3 3.2 Run 3 7/21/201113:33:40 18.2 2.3 3.1 Run 3 7/21/201113:34:00 18.2 2.3 3.2 Run 3 7/21/201113:34:20 18.2 2.3 3.1 Run 3 7/21/201113:34:40 18.1 2.3 3.1 Run3 7/21/201113:35:00 18.2 2.3 3.2 Run 3 7/21/201113:35:20 18.2 2.3 3.3 Run 3 7/21/201113:35:40 18.2 2.3 3.3 Run 3 7/21/201113:36:00 18.1 2.3 3.3 Run3 7/21/201113:36:20 18.2 2.3 3.3 Run 3 7/21/201113:36:40 18.2 2.3 3.3 Run 3

Page 18 of22 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02. ppm Notes 7/21/201113:16:40 18.2 2.3 3.1 Standby In Stack 7/21/201113:17:00 18.2 2.3 3.2 Standby In Stack 7/21/201113:17:20 18.2 2.3 3.2 Standby In Stack 7/21/201113:17:40 18.2 2.4 3.1 Standby In Stack 7/21/201113:18:00 18.2 2.3 3.1 Standby In Stack 7/21/201113:18:20 18.2 2.3 3.0 Standby In Stack 7/21/201113:18:40 18.2 2.3 2.9 Standby In Stack 7/21/201113:19:00 18.2 2.3 2.8 Standby In Stack 7/21/201113:19:20 18.2 2.4 2.8 Standby In Stack 7/21/201113:19:40 18.1 2.4 2.8 Standby In Stack 7/21/201113:20:00 18.2 2.3 2.8 Standby In Stack 7/21/201113:20:20 18.2 2.3 2.8 Standby In Stack 7/21/201113:20:40 18.2 2.3 2.8 Standby In Stack 7/21/201113:21:00 18.2 2.3 2.9 Standby In Stack 7/21/201113:21:20 18.1 2.3 2.8 Standby In Stack 7/21/201113:21:40 18.2 2.3 2.8 Standby In Stack 7/21/201113:22:00 18.2 2.3 2.8 Standby In Stack 7/21/201113:22:20 18.2 2.3 2.7 Standby In Stack 7/21/201113:22:40 18.1 2.3 2.6 Standby In Stack 7/21/201113:23:00 18.1 2.4 2.6 Standby In Stack 7/21/201113:23:20 18.1 2.4 2.7 Standby In Stack 7/21/201113:23:40 18.1 2.4 2.7 Standby In Stack 7/21/201113:24:00 18.1 2.3 2.6 Standby In Stack 7/21/201113:24:20 18.1 2.4 2.7 Standby In Stack 7/21/201113:24:40 18.1 2.3 2.8 Standby In Stack 7/21/201113:25:00 18.1 2.4 2.7 In Stack 7/21/201113:25:20 18.1 2.3 2.7 In Stack 7/21/201113:25:40 18.1 2.3 2.7 In Stack 7/21/201113:26:00 18.1 2.3 2.8 In Stack 7/21/201113:26:20 18.1 2.3 2.9 In Stack 7/21/201113:26:40 18.1 2.3 2.8 In Stack 7/21/201113:27:00 18.1 2.3 2.8 In Stack 7/21/201113:27:20 18.1 2.3 2.8 Run 3 7/21/201113:27:40 18.1 2.3 2.9 Run 3 7/21/201113:28:00 18.2 2.3 3.0 Run 3 7/21/201113:28:20 18.2 2.3 3.1 Run 3 7/21/201113:28:40 18.2 2.3 3.0 Run 3 7/21/201113:29:00 18.2 2.3 3.0 Run 3 7/21/201113:29:20 18.1 2.3 3.1 Run 3 7/21/201113:29:40 18.2 2.3 3.2 Run 3 7/21/201113:30:00 18.1 2.3 3.2 Run 3 7/21/201113:30:20 18.2 2.3 3.3 Run 3 7/21/201113:30:40 18.2 2.3 3.3 Run 3 7/21/201113:31:00 18.1 2.3 3.4 Run 3 7/21/201113:31:20 18.1 2.3 3.3 Run 3 7/21/201113:31:40 18.2 2.3 3.4 Run 3 7/21/201113:32:00 18.2 2.3 3.4 Run 3 7/21/201113:32:20 18.2 2.3 3.2 Run 3 7/21/201113:32:40 18.2 2.3 3.1 Run 3 7/21/201113:33:00 18.2 2.3 3.2 Run 3 7/21/201113:33:20 18.2 2.3 3.2 Run 3 7/21/201113:33:40 18.2 2.3 3.1 Run 3 7/21/201113:34:00 18.2 2.3 3.2 Run 3 7/21/201113:34:20 18.2 2.3 3.1 Run 3 7/21/201113:34:40 18.1 2.3 3.1 Run3 7/21/201113:35:00 18.2 2.3 3.2 Run 3 7/21/201113:35:20 18.2 2.3 3.3 Run 3 7/21/201113:35:40 18.2 2.3 3.3 Run 3 7/21/201113:36:00 18.1 2.3 3.3 Run3 7/21/201113:36:20 18.2 2.3 3.3 Run 3 7/21/201113:36:40 18.2 2.3 3.3 Run 3

Page 18 of22ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/21/201113:37:00 18.2 2.3 3.3 Run 3 7/21/201113:37:20 18.1 2.3 3.4 Run 3 7/21/201113:37:40 18.1 2.3 3.5 Run3 7/21/201113:38:00 18.1 2.3 3.5 Run3 7/21/201113:38:20 18.1 2.3 3.5 Run 3 7/21/201113:38:40 18.2 2.3 3.4 Run 3 7/21/201113:39:00 18.1 2.3 3.4 Run 3 7/21/201113:39:20 18.1 2.4 3.5 Run 3 7/21/201113:39:40 18.1 2.4 3.4 Run 3 7/21/201113:40:00 18.1 2.4 3.3 Run 3 7/21/201113:40:20 18.1 2.4 3.4 Run 3 7/21/201113:40:40 18.1 2.4 3.5 Run 3 7/21/201113:41:00 18.1 2.4 3.4 Run 3 7/21/201113:41:20 18.1 2.4 3.4 Run 3 7/21/201113:41:40 18.0 2.4 3.4 Run 3 7/21/201113:42:00 18.0 2.4 3.4 Run 3 7/21/201113:42:20 18.0 2.4 3.5 Run 3 7/21/201113:42:40 18.0 2.4 3.6 Run 3 7/21/201113:43:00 18.0 2.4 3.4 Run 3 7/21/201113:43:20 18.0 2.4 3.3 Run3 7/21/201113:43:40 18.0 2.4 3.4 Run 3 7/21/201113:44:00 18.0 2.5 3.5 Run 3 7/21/201113:44:20 18.0 2.5 3.6 Run 3 7/21/201113:44:40 18.0 2.5 3.6 Run 3 7/21/201113:45:00 18.0 2.5 3.6 Run 3 7/21/201113:45:20 18.0 2.4 3.5 Run3 7/21/201113:45:40 18.0 2.4 3.5 Run3 7/21/201113:46:00 18.0 2.4 3.5 Run 3 7/21/201113:46:20 18.0 2.4 3.6 Run 3 7/21/201113:46:40 18.0 2.4 3.7 Run 3 7/21/201113:47:00 18.0 2.4 3.9 Run 3 7/21/201113:47:20 18.0 2.4 3.9 Run 3 7/21/201113:47:40 18.0 2.4 3.9 Run3 7/21/201113:48:00 18.0 2.4 4.0 Run 3 7/21/201113:48:20 18.1 2.4 4.0 Run 3 7/21/201113:48:40 18.1 2.4 4.0 Run 3 7/21/201113:49:00 18.0 2.4 4.2 Run 3 7/21/201113:49:20 18.1 2.4 4.3 Run 3 7/21/201113:49:40 18.1 2.4 4.2 Run3 7/21/201113:50:00 18.1 2.4 4.2 Run 3 7/21/201113:50:20 18.0 2.4 4.3 Run 3 7/21/201113:50:40 18.0 2.4 4.4 Run 3 7/21/201113:51:00 18.0 2.4 4.5 Run 3 7/21/201113:51:20 18.0 2.4 4.5 Run 3 7/21/201113:51:40 18.0 2.4 4.4 Run3 7/21/201113:52:00 18.0 2.4 4.4 Run 3 7/21/201113:52:20 18.1 2.4 4.5 Run3 7/21/201113:52:40 18.1 2.4 4.6 Run 3 7/21/201113:53:00 18.0 2.4 4.7 Run 3 7/21/201113:53:20 18.1 2.4 4.8 Run 3 7/21/201113:53:40 18.0 2.4 4.7 Run 3 7/21/201113:54:00 18.0 2.4 4.7 Run 3 7/21/201113:54:20 18.0 2.4 4.7 Run 3 7/21/201113:54:40 18.0 2.4 4.6 Run 3 7/21/201113:55:00 18.0 2.4 4.7 Run3 7/21/201113:55:20 18.0 2.4 4.9 Run 3 7/21/201113:55:40 18.0 2.4 4.8 Run 3 7/21/201113:56:00 18.0 2.4 4.8 Run 3 7/21/201113:56:20 18.0 2.4 4.6 Run 3 7/21/201113:56:40 18.0 2.4 4.5 Run 3 7/21/201113:57:00 18.0 2.4 4.5 Run 3

Page 19 of22 ArcelorMittal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02' ppm Notes 7/21/201113:37:00 18.2 2.3 3.3 Run 3 7/21/201113:37:20 18.1 2.3 3.4 Run 3 7/21/201113:37:40 18.1 2.3 3.5 Run3 7/21/201113:38:00 18.1 2.3 3.5 Run3 7/21/201113:38:20 18.1 2.3 3.5 Run 3 7/21/201113:38:40 18.2 2.3 3.4 Run 3 7/21/201113:39:00 18.1 2.3 3.4 Run 3 7/21/201113:39:20 18.1 2.4 3.5 Run 3 7/21/201113:39:40 18.1 2.4 3.4 Run 3 7/21/201113:40:00 18.1 2.4 3.3 Run 3 7/21/201113:40:20 18.1 2.4 3.4 Run 3 7/21/201113:40:40 18.1 2.4 3.5 Run 3 7/21/201113:41:00 18.1 2.4 3.4 Run 3 7/21/201113:41:20 18.1 2.4 3.4 Run 3 7/21/201113:41:40 18.0 2.4 3.4 Run 3 7/21/201113:42:00 18.0 2.4 3.4 Run 3 7/21/201113:42:20 18.0 2.4 3.5 Run 3 7/21/201113:42:40 18.0 2.4 3.6 Run 3 7/21/201113:43:00 18.0 2.4 3.4 Run 3 7/21/201113:43:20 18.0 2.4 3.3 Run3 7/21/201113:43:40 18.0 2.4 3.4 Run 3 7/21/201113:44:00 18.0 2.5 3.5 Run 3 7/21/201113:44:20 18.0 2.5 3.6 Run 3 7/21/201113:44:40 18.0 2.5 3.6 Run 3 7/21/201113:45:00 18.0 2.5 3.6 Run 3 7/21/201113:45:20 18.0 2.4 3.5 Run3 7/21/201113:45:40 18.0 2.4 3.5 Run3 7/21/201113:46:00 18.0 2.4 3.5 Run 3 7/21/201113:46:20 18.0 2.4 3.6 Run 3 7/21/201113:46:40 18.0 2.4 3.7 Run 3 7/21/201113:47:00 18.0 2.4 3.9 Run 3 7/21/201113:47:20 18.0 2.4 3.9 Run 3 7/21/201113:47:40 18.0 2.4 3.9 Run3 7/21/201113:48:00 18.0 2.4 4.0 Run 3 7/21/201113:48:20 18.1 2.4 4.0 Run 3 7/21/201113:48:40 18.1 2.4 4.0 Run 3 7/21/201113:49:00 18.0 2.4 4.2 Run 3 7/21/201113:49:20 18.1 2.4 4.3 Run 3 7/21/201113:49:40 18.1 2.4 4.2 Run3 7/21/201113:50:00 18.1 2.4 4.2 Run 3 7/21/201113:50:20 18.0 2.4 4.3 Run 3 7/21/201113:50:40 18.0 2.4 4.4 Run 3 7/21/201113:51:00 18.0 2.4 4.5 Run 3 7/21/201113:51:20 18.0 2.4 4.5 Run 3 7/21/201113:51:40 18.0 2.4 4.4 Run3 7/21/201113:52:00 18.0 2.4 4.4 Run 3 7/21/201113:52:20 18.1 2.4 4.5 Run3 7/21/201113:52:40 18.1 2.4 4.6 Run 3 7/21/201113:53:00 18.0 2.4 4.7 Run 3 7/21/201113:53:20 18.1 2.4 4.8 Run 3 7/21/201113:53:40 18.0 2.4 4.7 Run 3 7/21/201113:54:00 18.0 2.4 4.7 Run 3 7/21/201113:54:20 18.0 2.4 4.7 Run 3 7/21/201113:54:40 18.0 2.4 4.6 Run 3 7/21/201113:55:00 18.0 2.4 4.7 Run3 7/21/201113:55:20 18.0 2.4 4.9 Run 3 7/21/201113:55:40 18.0 2.4 4.8 Run 3 7/21/201113:56:00 18.0 2.4 4.8 Run 3 7/21/201113:56:20 18.0 2.4 4.6 Run 3 7/21/201113:56:40 18.0 2.4 4.5 Run 3 7/21/201113:57:00 18.0 2.4 4.5 Run 3

Page 19 of22ArcelorMiltal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/21/201113:57:20 18.0 2.4 4.5 Run 3 7/21/201113:57:40 18.0 2.4 4.5 Run 3 7/21/201113:58:00 18.0 2.4 4.6 Run 3 7/21/201113:58:20 18.0 2.4 4.6 Run 3 7/21/201113:58:40 18.0 2.4 4.5 Run 3 7/21/201113:59:00 18.0 2.4 4.4 Run 3 7/21/201113:59:20 18.0 2.4 4.5 Run 3 7/21/201113:59:40 18.0 2.4 4.5 Run 3 7/21/201114:00:00 18.0 2.4 4.5 Run 3 7/21/201114:00:20 18.0 2.5 4.5 Run 3 7/21/201114:00:40 18.0 2.5 4.5 Run3 7/21/201114:01:00 18.0 2.5 4.5 Run3 7/21/201114:01:20 18.0 2.4 4.5 Run 3 7/21/201114:01:40 18.0 2.4 4.5 Run 3 7/21/201114:02:00 18.0 2.4 4.5 Run 3 7/21/201114:02:20 18.0 2.4 4.3 Run 3 7/21/201114:02:40 18.0 2.4 4.2 Run 3 7/21/201114:03:00 18.0 2.4 4.3 Run 3 7/21/201114:03:20 18.0 2.4 4.4 Run 3 7/21/201114:03:40 18.0 2.5 4.5 Run 3 7/21/201114:04:00 18.0 2.5 4.5 Run 3 7/21/201114:04:20 18.0 2.4 4.5 Run 3 7/21/201114:04:40 17.9 2.5 4.6 Run 3 7/21/201114:05:00 17.9 2.5 4.6 Run 3 7/21/201114:05:20 18.0 2.5 4.6 Run 3 7/21/201114:05:40 18.0 2.4 4.8 Run 3 7/21/201114:06:00 18.0 2.4 4.8 Run 3 7/21/201114:06:20 18.0 2.4 4.7 Run 3 7/21/201114:06:40 18.0 2.4 4.7 Run 3 7/21/201114:07:00 18.0 2.4 4.8 Run 3 7/21/201114:07:20 18.0 2.4 4.7 Run 3 7/21/201114:07:40 18.0 2.4 4.7 Run 3 7/21/201114:08:00 18.0 2.4 4.7 Run 3 7/21/201114:08:20 18.0 2.4 4.6 Run 3 7/21/201114:08:40 18.0 2.4 4.6 Run 3 7/21/201114:09:00 18.0 2.4 4.6 Run3 7/21/201114:09:20 18.1 2.4 4.6 Run 3 7/21/201114:09:40 18.0 2.4 4.6 Run 3 7/21/201114:10:00 18.0 2.4 4.6 Run 3 7/21/201114:10:20 18.1 2.4 4.4 Run 3 7/21/201114:10:40 18.1 2.4 4.5 Run 3 7/21/201114:11:00 18.0 2.4 4.5 Run 3 7/21/201114:11:20 18.1 2.4 4.3 Run 3 7/21/201114:11:40 18.0 2.4 4.2 Run3 7/21/201114:12:00 18.1 2.4 4.2 Run 3 7/21/201114:12:20 18.1 2.4 4.1 Run 3 7/21/201114:12:40 18.1 2.4 4.0 Run 3 7/21/201114:13:00 18.1 2.4 3.9 Run 3 7/21/201114:13:20 18.1 2.4 3.7 Run 3 7/21/201114:13:40 18.1 2.4 3.6 Run 3 7/21/201114:14:00 18.1 2.4 3.5 Run 3 7/21/201114:14:20 18.1 2.4 3.5 Run3 7/21/201114:14:40 18.1 2.4 3.5 Run 3 7/21/201114:15:00 18.1 2.4 3.5 Run 3 7/21/201114:15:20 18.1 2.3 3.4 Run 3 7/21/201114:15:40 18.1 2.4 3.3 Run 3 7/21/201114:16:00 18.1 2.3 3.2 Run 3 7/21/201114:16:20 18.1 2.3 3.4 Run 3 7/21/201114:16:40 18.1 2.3 3.4 Run3 7/21/201114:17:00 18.2 2.3 3.3 Run 3 7/21/201114:17:20 18.2 2.3 3.3 Run 3

Page 20 of22 ArcelorMiltal Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia, Minnesota Furnace Stack C

TIMESTAMP O2

### ,% CO2

### ,% S02, ppm Notes 7/21/201113:57:20 18.0 2.4 4.5 Run 3 7/21/201113:57:40 18.0 2.4 4.5 Run 3 7/21/201113:58:00 18.0 2.4 4.6 Run 3 7/21/201113:58:20 18.0 2.4 4.6 Run 3 7/21/201113:58:40 18.0 2.4 4.5 Run 3 7/21/201113:59:00 18.0 2.4 4.4 Run 3 7/21/201113:59:20 18.0 2.4 4.5 Run 3 7/21/201113:59:40 18.0 2.4 4.5 Run 3 7/21/201114:00:00 18.0 2.4 4.5 Run 3 7/21/201114:00:20 18.0 2.5 4.5 Run 3 7/21/201114:00:40 18.0 2.5 4.5 Run3 7/21/201114:01:00 18.0 2.5 4.5 Run3 7/21/201114:01:20 18.0 2.4 4.5 Run 3 7/21/201114:01:40 18.0 2.4 4.5 Run 3 7/21/201114:02:00 18.0 2.4 4.5 Run 3 7/21/201114:02:20 18.0 2.4 4.3 Run 3 7/21/201114:02:40 18.0 2.4 4.2 Run 3 7/21/201114:03:00 18.0 2.4 4.3 Run 3 7/21/201114:03:20 18.0 2.4 4.4 Run 3 7/21/201114:03:40 18.0 2.5 4.5 Run 3 7/21/201114:04:00 18.0 2.5 4.5 Run 3 7/21/201114:04:20 18.0 2.4 4.5 Run 3 7/21/201114:04:40 17.9 2.5 4.6 Run 3 7/21/201114:05:00 17.9 2.5 4.6 Run 3 7/21/201114:05:20 18.0 2.5 4.6 Run 3 7/21/201114:05:40 18.0 2.4 4.8 Run 3 7/21/201114:06:00 18.0 2.4 4.8 Run 3 7/21/201114:06:20 18.0 2.4 4.7 Run 3 7/21/201114:06:40 18.0 2.4 4.7 Run 3 7/21/201114:07:00 18.0 2.4 4.8 Run 3 7/21/201114:07:20 18.0 2.4 4.7 Run 3 7/21/201114:07:40 18.0 2.4 4.7 Run 3 7/21/201114:08:00 18.0 2.4 4.7 Run 3 7/21/201114:08:20 18.0 2.4 4.6 Run 3 7/21/201114:08:40 18.0 2.4 4.6 Run 3 7/21/201114:09:00 18.0 2.4 4.6 Run3 7/21/201114:09:20 18.1 2.4 4.6 Run 3 7/21/201114:09:40 18.0 2.4 4.6 Run 3 7/21/201114:10:00 18.0 2.4 4.6 Run 3 7/21/201114:10:20 18.1 2.4 4.4 Run 3 7/21/201114:10:40 18.1 2.4 4.5 Run 3 7/21/201114:11:00 18.0 2.4 4.5 Run 3 7/21/201114:11:20 18.1 2.4 4.3 Run 3 7/21/201114:11:40 18.0 2.4 4.2 Run3 7/21/201114:12:00 18.1 2.4 4.2 Run 3 7/21/201114:12:20 18.1 2.4 4.1 Run 3 7/21/201114:12:40 18.1 2.4 4.0 Run 3 7/21/201114:13:00 18.1 2.4 3.9 Run 3 7/21/201114:13:20 18.1 2.4 3.7 Run 3 7/21/201114:13:40 18.1 2.4 3.6 Run 3 7/21/201114:14:00 18.1 2.4 3.5 Run 3 7/21/201114:14:20 18.1 2.4 3.5 Run3 7/21/201114:14:40 18.1 2.4 3.5 Run 3 7/21/201114:15:00 18.1 2.4 3.5 Run 3 7/21/201114:15:20 18.1 2.3 3.4 Run 3 7/21/201114:15:40 18.1 2.4 3.3 Run 3 7/21/201114:16:00 18.1 2.3 3.2 Run 3 7/21/201114:16:20 18.1 2.3 3.4 Run 3 7/21/201114:16:40 18.1 2.3 3.4 Run3 7/21/201114:17:00 18.2 2.3 3.3 Run 3 7/21/201114:17:20 18.2 2.3 3.3 Run 3

Page 20 of22ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/21/201114:17:40 18.1 2.3 3.3 Run 3 7/21/201114:18:00 18.1 2.4 3.3 Run 3 7/21/201114:18:20 18.1 2.3 3.2 Run 3 7/21/201114:18:40 18.2 2.3 3.3 Run 3 7/21/201114:19:00 18.1 2.3 3.1 Run 3 7/21/201114:19:20 18.1 2.3 2.9 Run 3 7/21/201114:19:40 18.1 2.3 3.1 Run 3 7/21/201114:20:00 18.1 2.3 3.1 Run 3 7/21/201114:20:20 18.2 2.3 3.0 Run 3 7/21/201114:20:40 18.1 2.3 3.0 Run 3 7/21/201114:21:00 18.1 2.3 3.0 Run 3 7/21/201114:21:20 18.2 2.3 2.9 Run 3 7/21/201114:21:40 18.2 2.3 2.8 Run 3 7/21/201114:22:00 18.2 2.3 2.8 Run 3 7/21/201114:22:20 18.2 2.3 2.8 Run 3 7/21/201114:22:40 18.1 2.3 2.9 Run 3 7/21/201114:23:00 18.1 2.4 3.0 Run 3 7/21/201114:23:20 18.2 2.3 2.8 Run 3 7/21/201114:23:40 18.1 2.4 2.7 Run3 7/21/201114:24:00 18.1 2.4 2.6 Run 3 7/21/201114:24:20 18.2 2.4 2.6 Run 3 7/21/201114:24:40 18.1 2.4 2.5 Run 3 7/21/201114:25:00 18.1 2.4 2.4 Run 3 7/21/201114:25:20 18.1 2.4 2.3 Run 3 7/21/201114:25:40 18.1 2.4 2.3 Run 3 7/21/201114:26:00 18.1 2.4 2.4 Run 3 7/21/201114:26:20 18.1 2.4 2.4 Run 3 7/21/201114:26:40 18.2 2.3 2.4 Run 3 7/21/201114:27:00 18.1 2.3 2.3 Run 3 7/21/201114:27:20 18.1 2.4 2.3 Run3 7/21/201114:27:40 18.1 2.4 2.2 Run 3 7/21/201114:28:00 18.1 2.4 2.1 Run 3 7/21/201114:28:20 18.1 2.4 2.2 Run 3 7/21/201114:28:40 18.1 2.4 2.3 Run 3 7/21/201114:29:00 18.1 2.4 2.3 Run 3 7/21/201114:29:20 18.1 2.4 2.2 Run 3 7/21/201114:29:40 18.1 2.4 2.2 Run 3 7/21/201114:30:00 18.1 2.4 2.2 Run 3 7/21/201114:30:20 18.1 2.4 2.2 Run 3 7/21/201114:30:40 18.1 2.4 2.2 Run 3 7/21/201114:31:00 18.1 2.4 2.1 Run 3 7/21/201114:31:20 18.1 2.4 2.1 Run 3 7/21/201114:31:40 18.1 2.4 2.2 Run 3 7/21/201114:32:00 18.1 2.4 2.2 Run 3 7/21/201114:32:20 18.1 2.4 2.1 Run 3 7/21/201114:32:40 18.1 2.4 2.1 Run 3 7/21/201114:33:00 18.1 2.4 2.1 In Stack 7/21/201114:33:20 18.1 2.4 2.1 In Stack 7/21/201114:33:40 18.1 2.4 2.2 In Stack 7/21/201114:34:00 18.1 2.4 2.1 In Stack 7/21/201114:34:20 18.1 2.4 1.9 In Stack 7/21/201114:34:40 18.1 2.4 1.9 In Stack 7/21/201114:35:00 18.1 2.4 1.9 In Stack 7/21/201114:35:20 7.9 1.0 2.0 In Stack 7/21/201114:35:40 0.2 0.1 3.0 In Stack 7/21/201114:36:00 0.1 0.1 2.9 System Bias Check 7/21/201114:36:20 0.0 0.1 1.4 System Bias Check 7/21/201114:36:40 0.0 0.1 0.7 System Bias Check 7/21/201114:37:00 0.0 0.1 0.6 System Bias Check 7/21/201114:37:20 0.0 0.1 0.7 System Bias Check 7/21/201114:37:40 0.0 0.1 0.6 System Bias Check

Page 21 of22 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/21/201114:17:40 18.1 2.3 3.3 Run 3 7/21/201114:18:00 18.1 2.4 3.3 Run 3 7/21/201114:18:20 18.1 2.3 3.2 Run 3 7/21/201114:18:40 18.2 2.3 3.3 Run 3 7/21/201114:19:00 18.1 2.3 3.1 Run 3 7/21/201114:19:20 18.1 2.3 2.9 Run 3 7/21/201114:19:40 18.1 2.3 3.1 Run 3 7/21/201114:20:00 18.1 2.3 3.1 Run 3 7/21/201114:20:20 18.2 2.3 3.0 Run 3 7/21/201114:20:40 18.1 2.3 3.0 Run 3 7/21/201114:21:00 18.1 2.3 3.0 Run 3 7/21/201114:21:20 18.2 2.3 2.9 Run 3 7/21/201114:21:40 18.2 2.3 2.8 Run 3 7/21/201114:22:00 18.2 2.3 2.8 Run 3 7/21/201114:22:20 18.2 2.3 2.8 Run 3 7/21/201114:22:40 18.1 2.3 2.9 Run 3 7/21/201114:23:00 18.1 2.4 3.0 Run 3 7/21/201114:23:20 18.2 2.3 2.8 Run 3 7/21/201114:23:40 18.1 2.4 2.7 Run3 7/21/201114:24:00 18.1 2.4 2.6 Run 3 7/21/201114:24:20 18.2 2.4 2.6 Run 3 7/21/201114:24:40 18.1 2.4 2.5 Run 3 7/21/201114:25:00 18.1 2.4 2.4 Run 3 7/21/201114:25:20 18.1 2.4 2.3 Run 3 7/21/201114:25:40 18.1 2.4 2.3 Run 3 7/21/201114:26:00 18.1 2.4 2.4 Run 3 7/21/201114:26:20 18.1 2.4 2.4 Run 3 7/21/201114:26:40 18.2 2.3 2.4 Run 3 7/21/201114:27:00 18.1 2.3 2.3 Run 3 7/21/201114:27:20 18.1 2.4 2.3 Run3 7/21/201114:27:40 18.1 2.4 2.2 Run 3 7/21/201114:28:00 18.1 2.4 2.1 Run 3 7/21/201114:28:20 18.1 2.4 2.2 Run 3 7/21/201114:28:40 18.1 2.4 2.3 Run 3 7/21/201114:29:00 18.1 2.4 2.3 Run 3 7/21/201114:29:20 18.1 2.4 2.2 Run 3 7/21/201114:29:40 18.1 2.4 2.2 Run 3 7/21/201114:30:00 18.1 2.4 2.2 Run 3 7/21/201114:30:20 18.1 2.4 2.2 Run 3 7/21/201114:30:40 18.1 2.4 2.2 Run 3 7/21/201114:31:00 18.1 2.4 2.1 Run 3 7/21/201114:31:20 18.1 2.4 2.1 Run 3 7/21/201114:31:40 18.1 2.4 2.2 Run 3 7/21/201114:32:00 18.1 2.4 2.2 Run 3 7/21/201114:32:20 18.1 2.4 2.1 Run 3 7/21/201114:32:40 18.1 2.4 2.1 Run 3 7/21/201114:33:00 18.1 2.4 2.1 In Stack 7/21/201114:33:20 18.1 2.4 2.1 In Stack 7/21/201114:33:40 18.1 2.4 2.2 In Stack 7/21/201114:34:00 18.1 2.4 2.1 In Stack 7/21/201114:34:20 18.1 2.4 1.9 In Stack 7/21/201114:34:40 18.1 2.4 1.9 In Stack 7/21/201114:35:00 18.1 2.4 1.9 In Stack 7/21/201114:35:20 7.9 1.0 2.0 In Stack 7/21/201114:35:40 0.2 0.1 3.0 In Stack 7/21/201114:36:00 0.1 0.1 2.9 System Bias Check 7/21/201114:36:20 0.0 0.1 1.4 System Bias Check 7/21/201114:36:40 0.0 0.1 0.7 System Bias Check 7/21/201114:37:00 0.0 0.1 0.6 System Bias Check 7/21/201114:37:20 0.0 0.1 0.7 System Bias Check 7/21/201114:37:40 0.0 0.1 0.6 System Bias Check

Page 21 of22ArceJorMittaJ Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/21/201114:38:00 0.0 0.1 0.4 System Bias Check 7/21/201114:38:20 0.0 0.1 0.3 System Bias Check 7/21/201114:38:40 0.0 0.1**~** 0.3 N2 Zero System Bias Check 7/21/201114:39:00 0.0 0.1 0.3 System Bias Check 7/21/201114:39:20 0.0 0.1 0.2 System Bias Check 7/21/201114:39:40 0.0 0.1 0.3 System Bias Check 7/21/201114:40:00 6.9 6.9 0.3 System Bias Check 7/21/201114:40:20 8.8 8.8 -0.1 System Bias Check 7/21/201114:40:40 8.8 8.9 -0.3 System Bias Check 7/21/201114:41:00 8.9 9.0 -0.2 System Bias Check 7/21/201114:41:20 8.9 9.0 -0.2 02 9.0/C02 9.0 System Bias Check 7/21/201114:41:40 8.9 9.0 -0.3 System Bias Check 7/21/201114:42:00 7.6 7.6 -0.3 System Bias Check 7/21/201114:42:20 0.2 0.4 0.1 System Bias Check 7/21/201114:42:40 0.0 0.2 1.6 System Bias Check 7/21/201114:43:00 0.0 0.2 3.3 System Bias Check 7/21/201114:43:20 0.0 0.2 4.1 System Bias Check 7/21/201114:43:40 0.0 0.1 4.4 System Bias Check 7/21/201114:44:00 0.0 0.1 4.6 System Bias Check 7/21/201114:44:20 0.0 0.1 4.7 System Bias Check 7/21/201114:44:40 0.0 0.1 4.8 System Bias Check 7/21/201114:45:00 0.0 0.1 4.8 System Bias Check 7/21/201114:45:20 0.0 0.1 4.7 System Bias Check 7/21/201114:45:40 0.0 0.1 4.7 System Bias Check 7/21/201114:46:00 0.1 0.1 4.8 System Bias Check 7/21/201114:46:20 0.0 0.1 6.3 System Bias Check 7/21/201114:46:40 0.0 0.1 11.8 System Bias Check 7/21/201114:47:00 0.0 0.1 17.6 System Bias Check 7/21/201114:47:20 0.0 0.1 20.3 System Bias Check 7/21/201114:47:40 0.0 0.1 21.7 System Bias Check 7/21/201114:48:00 0.0 0.1 22.4 System Bias Check 7/21/201114:48:20 0.0 0.1 23.1 System Bias Check 7/21/201114:48:40 0.0 0.1 23.5 System Bias Check 7/21/201114:49:00 0.0 0.1 23.9 System Bias Check 7/21/201114:49:20 0.0 0.1 24.3 System Bias Check 7/21/201114:49:40 0.0 0.1 24.8 System Bias Check 7/21/201114:50:00 0.0 0.1 25.2 System Bias Check 7/21/201114:50:20 0.0 0.1 25.5 S0227.0 ppm System Bias Check 7/21/201114:50:40 0.0 0.1 25.7 System Bias Check

Page 22 of22 ArceJorMittaJ Data Logger Output Barr Engineering Minorca Mine Test Date: 7/20-21/11 9/10/2011 Virginia. Minnesota Furnace Stack C

TIMESTAMP O2

### .% CO2 •

### % S02. ppm Notes 7/21/201114:38:00 0.0 0.1 0.4 System Bias Check 7/21/201114:38:20 0.0 0.1 0.3 System Bias Check 7/21/201114:38:40 0.0 0.1**~** 0.3 N2 Zero System Bias Check 7/21/201114:39:00 0.0 0.1 0.3 System Bias Check 7/21/201114:39:20 0.0 0.1 0.2 System Bias Check 7/21/201114:39:40 0.0 0.1 0.3 System Bias Check 7/21/201114:40:00 6.9 6.9 0.3 System Bias Check 7/21/201114:40:20 8.8 8.8 -0.1 System Bias Check 7/21/201114:40:40 8.8 8.9 -0.3 System Bias Check 7/21/201114:41:00 8.9 9.0 -0.2 System Bias Check 7/21/201114:41:20 8.9 9.0 -0.2 02 9.0/C02 9.0 System Bias Check 7/21/201114:41:40 8.9 9.0 -0.3 System Bias Check 7/21/201114:42:00 7.6 7.6 -0.3 System Bias Check 7/21/201114:42:20 0.2 0.4 0.1 System Bias Check 7/21/201114:42:40 0.0 0.2 1.6 System Bias Check 7/21/201114:43:00 0.0 0.2 3.3 System Bias Check 7/21/201114:43:20 0.0 0.2 4.1 System Bias Check 7/21/201114:43:40 0.0 0.1 4.4 System Bias Check 7/21/201114:44:00 0.0 0.1 4.6 System Bias Check 7/21/201114:44:20 0.0 0.1 4.7 System Bias Check 7/21/201114:44:40 0.0 0.1 4.8 System Bias Check 7/21/201114:45:00 0.0 0.1 4.8 System Bias Check 7/21/201114:45:20 0.0 0.1 4.7 System Bias Check 7/21/201114:45:40 0.0 0.1 4.7 System Bias Check 7/21/201114:46:00 0.1 0.1 4.8 System Bias Check 7/21/201114:46:20 0.0 0.1 6.3 System Bias Check 7/21/201114:46:40 0.0 0.1 11.8 System Bias Check 7/21/201114:47:00 0.0 0.1 17.6 System Bias Check 7/21/201114:47:20 0.0 0.1 20.3 System Bias Check 7/21/201114:47:40 0.0 0.1 21.7 System Bias Check 7/21/201114:48:00 0.0 0.1 22.4 System Bias Check 7/21/201114:48:20 0.0 0.1 23.1 System Bias Check 7/21/201114:48:40 0.0 0.1 23.5 System Bias Check 7/21/201114:49:00 0.0 0.1 23.9 System Bias Check 7/21/201114:49:20 0.0 0.1 24.3 System Bias Check 7/21/201114:49:40 0.0 0.1 24.8 System Bias Check 7/21/201114:50:00 0.0 0.1 25.2 System Bias Check 7/21/201114:50:20 0.0 0.1 25.5 S0227.0 ppm System Bias Check 7/21/201114:50:40 0.0 0.1 25.7 System Bias Check

Page 22 of22

### ArcelorMittal Minorca Mine Virginia. Minnesota Average Analyzer Results Run O2 •

### % 1 17.6 2 17.7 

## 3 17.8

TIMESTAMP O2 •

### % Data LoggerOutput Test Date: 7/21/11

Fumace Stack D

CO2 •

### % S02. ppm 2.9 

## A.9 2.8 7.0 2.6 8.9

CO2 •

## % S02. ppm 

## See Stack

## CforAnalyzerCalibration 7/21/201114:36:20 0.0 0.1 1.4 7/21/201114:36:40 0.0 0.1 0.7 7/21/201114:37:00 0.0 0.1 0.6 7/21/201114:37:20 0.0 0.1 0.7 7/21/201114:37:40 0.0 0.1 0.6 7/21/201114:38:00 0.0 0.1 0.4 7/21/201114:38:20 0.0 0.1 0.3 7/21/201114:38:40 0.0 0.1 0.3 7/21/201114:39:00 0.0 0.1 0.3 7/21/201114:39:20 0.0 0.1 0.2 7/21/201114:39:40 0.0 0.1 0.3 7/21/201114:40:00 6.9 6.9 0.3 7/21/201114:40:20 8.8 8.8 -0.1 7/21/201114:40:40 8.8 8.9 -0.3 7/21/201114:41:00 8.9 9.0 -0.2 7/21/201114:41:20 8.9 9.0 -0.2 7/21/201114:41:40 8.9 9.0 -0.3 7/21/201114:42:00 7.6 7.6 -0.3 7/21/201114:42:20 0.2 0.4 0.1 7/21/201114:42:40 0.0 0.2 1.6 7/21/201114:43:00 0.0 0.2 3.3 7/21/201114:43:20 0.0 0.2 4.1 7/21/201114:43:40 0.0 0.1 4.4 7/21/201114:44:00 0.0 0.1 4.6 7/21/201114:44:20 0.0 0.1 4.7 7/21/201114:44:40 0.0 0.1 4.8 7/21/201114:45:00 0.0 0.1 4.8 7/21/201114:45:20 0.0 0.1 4.7 7/21/201114:45:40 0.0 0.1 4.7 7/21/201114:46:00 0.1 0.1 4.8 7/21/201114:46:20 0.0 0.1 6.3 7/21/201114:46:40 0.0 0.1 11.8 7/21/201114:47:00 0.0 0.1 17.6 7/21/201114:47:20 0.0 0.1 20.3 7/21/201114:47:40 0.0 0.1 21.7 7/21/201114:48:00 0.0 0.1 22.4 7/21/201114:48:20 0.0 0.1 23.1 7/21/201114:48:40 0.0 0.1 23.5 7/21/201114:49:00 0.0 0.1 23.9 7/21/201114:49:20 0.0 0.1 24.3 7/21/201114:49:40 0.0 0.1 24.8 7/21/201114:50:00 0.0 0.1 25.2 7/21/201114:50:20 0.0 0.1 

### 25.5 7/21/201114:50:40 0.0 0.1 25.7 7/21/201114:51:00 5.8 0.9 27.7 Page 1of 18 Run Times 1521-1628 1707-1810 1845-1948

N2 Zero

02 9.0/C02 9.0

S0227.0 ppm Notes Barr Engineering 9/10/2011

System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check ArcelorMittal Minorca Mine Virginia. Minnesota Average Analyzer Results Run O2 •

### % 1 17.6 2 17.7 

## 3 17.8

TIMESTAMP O2 •

### % Data LoggerOutput Test Date: 7/21/11

Fumace Stack D

CO2 •

### % S02. ppm 2.9 

## A.9 2.8 7.0 2.6 8.9

CO2 •

## % S02. ppm 

## See Stack

## CforAnalyzerCalibration 7/21/201114:36:20 0.0 0.1 1.4 7/21/201114:36:40 0.0 0.1 0.7 7/21/201114:37:00 0.0 0.1 0.6 7/21/201114:37:20 0.0 0.1 0.7 7/21/201114:37:40 0.0 0.1 0.6 7/21/201114:38:00 0.0 0.1 0.4 7/21/201114:38:20 0.0 0.1 0.3 7/21/201114:38:40 0.0 0.1 0.3 7/21/201114:39:00 0.0 0.1 0.3 7/21/201114:39:20 0.0 0.1 0.2 7/21/201114:39:40 0.0 0.1 0.3 7/21/201114:40:00 6.9 6.9 0.3 7/21/201114:40:20 8.8 8.8 -0.1 7/21/201114:40:40 8.8 8.9 -0.3 7/21/201114:41:00 8.9 9.0 -0.2 7/21/201114:41:20 8.9 9.0 -0.2 7/21/201114:41:40 8.9 9.0 -0.3 7/21/201114:42:00 7.6 7.6 -0.3 7/21/201114:42:20 0.2 0.4 0.1 7/21/201114:42:40 0.0 0.2 1.6 7/21/201114:43:00 0.0 0.2 3.3 7/21/201114:43:20 0.0 0.2 4.1 7/21/201114:43:40 0.0 0.1 4.4 7/21/201114:44:00 0.0 0.1 4.6 7/21/201114:44:20 0.0 0.1 4.7 7/21/201114:44:40 0.0 0.1 4.8 7/21/201114:45:00 0.0 0.1 4.8 7/21/201114:45:20 0.0 0.1 4.7 7/21/201114:45:40 0.0 0.1 4.7 7/21/201114:46:00 0.1 0.1 4.8 7/21/201114:46:20 0.0 0.1 6.3 7/21/201114:46:40 0.0 0.1 11.8 7/21/201114:47:00 0.0 0.1 17.6 7/21/201114:47:20 0.0 0.1 20.3 7/21/201114:47:40 0.0 0.1 21.7 7/21/201114:48:00 0.0 0.1 22.4 7/21/201114:48:20 0.0 0.1 23.1 7/21/201114:48:40 0.0 0.1 23.5 7/21/201114:49:00 0.0 0.1 23.9 7/21/201114:49:20 0.0 0.1 24.3 7/21/201114:49:40 0.0 0.1 24.8 7/21/201114:50:00 0.0 0.1 25.2 7/21/201114:50:20 0.0 0.1 

### 25.5 7/21/201114:50:40 0.0 0.1 25.7 7/21/201114:51:00 5.8 0.9 27.7 Page 1of 18 Run Times 1521-1628 1707-1810 1845-1948

N2 Zero

02 9.0/C02 9.0

S0227.0 ppm Notes Barr Engineering 9/10/2011

System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check System Bias Check

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/21/11 9/10/2011 

### Virginia. Minnesota Fumace Stack D

TIMESTAMP O2 •

### % CO2 •

## % S02. ppm Notes 

### 7/21/201114:51:20 18.1 2.3 )2.6 System Bias Check 

### 7/21/201114:51:40 18.3 2.3 8.5 In Stack 

### 7/21/201114:52:00 18.3 2.3 6.6 In Stack 

### 7/21/201114:52:20 18.3 2.4 5.8 In Stack 

### 7/21/201114:52:40 18.3 2.4 5.4 In Stack 

### 7/21/201114:53:00 18.3 2.4 4.9 In Stack



### 7/21/201115:16:40 17.4 3.1 5.2 In Stack 

### 7/21/201115:17:00 17.4 3.1 5.5 In Stack 

### 7/21/201115:17:20 17.4 3.1 5.8 In Stack 

### 7/21/201115:17:40 17.4 3.1 5.9 In Stack 

### 7/21/201115:18:00 17.4 3.1 5.9 In Stack 

### 7/21/201115:18:20 17.4 3.1 5.9 In Stack 

### 7/21/201115:18:40 17.4 3.1 6.0 In Stack 

### 7/21/201115:19:00 17.4 3.1 6.1 In Stack 

### 7/21/201115:19:20 17.4 3.1 6.0 In Stack 

### 7/21/201115:19:40 17.5 3.0 5.9 In Stack 

### 7/21/201115:20:00 17.5 3.0 5.8 In Stack 

### 7/21/201115:20:20 17.5 3.0 5.8 In Stack 

### 7/21/201115:20:40 17.5 3.0 5.7 In Stack 

### 7/21/201115:21:00 17.5 3.0 5.7 Run 1 Point B 

### 7/21/201115:21:20 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:21:40 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:22:00 17.5 3.0 5.9 Run 1 Point B 

### 7/21/201115:22:20 17.5 3.0 6.0 Run 1 Point B 

### 7/21/201115:22:40 17.5 3.0 5.9 Run 1 Point B 

### 7/21/201115:23:00 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:23:20 17.5 3.0 5.9 Run 1 Point B 

### 7/21/201115:23:40 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:24:00 17.5 3.0 5.6 Run 1 Point B 

### 7/21/201115:24:20 17.5 3.0 5.5 Run 1 Point B 

### 7/21/201115:24:40 17.6 2.9 5.4 Run 1 Point B 

### 7/21/201115:25:00 17.6 2.9 5.3 Run 1 Point B 

### 7/21/201115:25:20 17.5 3.0 5.2 Run 1 Point B 

### 7/21/201115:25:40 17.5 3.0 5.3 Run 1 Point B 

### 7/21/201115:26:00 17.5 3.0 5.2 Run 1 Point B 

### 7/21/201115:26:20 17.5 3.0 5.2 Run 1 Point B 

### 7/21/201115:26:40 17.5 3.0 5.1 Run 1 Point B 

### 7/21/201115:27:00 17.6 2.9 5.0 Run 1 Point B 

### 7/21/201115:27:20 17.6 2.9 4.8 Run 1 Point B 

### 7/21/201115:27:40 17.6 2.9 4.6 Run 1 Point B 

### 7/21/201115:28:00 17.6 2.9 4.6 Run 1 Point B 

### 7/21/201115:28:20 17.6 2.9 4.6 Run 1 Point B 

### 7/21/201115:28:40 17.6 2.9 4.4 Run 1 Point B 

### 7/21/201115:29:00 17.6 2.9 4.3 Run 1 Point B 

### 7/21/201115:29:20 17.6 2.9 4.1 Run 1 Point B 

### 7/21/201115:29:40 17.6 2.9 4.1 Run 1 Point B 

### 7/21/201115:30:00 17.6 2.9 4.0 Run 1 Point B 

### 7/21/201115:30:20 17.6 2.9 4.0 Run 1 Point B 

### 7/21/201115:30:40 17.6 2.9 4.1 Run 1 Point B 

### 7/21/201115:31:00 17.6 2.9 4.1 Run 1 Point B Page 

### 2 of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/21/11 9/10/2011 

### Virginia. Minnesota Fumace Stack D

TIMESTAMP O2 •

### % CO2 •

## % S02. ppm Notes 

### 7/21/201114:51:20 18.1 2.3 )2.6 System Bias Check 

### 7/21/201114:51:40 18.3 2.3 8.5 In Stack 

### 7/21/201114:52:00 18.3 2.3 6.6 In Stack 

### 7/21/201114:52:20 18.3 2.4 5.8 In Stack 

### 7/21/201114:52:40 18.3 2.4 5.4 In Stack 

### 7/21/201114:53:00 18.3 2.4 4.9 In Stack



### 7/21/201115:16:40 17.4 3.1 5.2 In Stack 

### 7/21/201115:17:00 17.4 3.1 5.5 In Stack 

### 7/21/201115:17:20 17.4 3.1 5.8 In Stack 

### 7/21/201115:17:40 17.4 3.1 5.9 In Stack 

### 7/21/201115:18:00 17.4 3.1 5.9 In Stack 

### 7/21/201115:18:20 17.4 3.1 5.9 In Stack 

### 7/21/201115:18:40 17.4 3.1 6.0 In Stack 

### 7/21/201115:19:00 17.4 3.1 6.1 In Stack 

### 7/21/201115:19:20 17.4 3.1 6.0 In Stack 

### 7/21/201115:19:40 17.5 3.0 5.9 In Stack 

### 7/21/201115:20:00 17.5 3.0 5.8 In Stack 

### 7/21/201115:20:20 17.5 3.0 5.8 In Stack 

### 7/21/201115:20:40 17.5 3.0 5.7 In Stack 

### 7/21/201115:21:00 17.5 3.0 5.7 Run 1 Point B 

### 7/21/201115:21:20 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:21:40 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:22:00 17.5 3.0 5.9 Run 1 Point B 

### 7/21/201115:22:20 17.5 3.0 6.0 Run 1 Point B 

### 7/21/201115:22:40 17.5 3.0 5.9 Run 1 Point B 

### 7/21/201115:23:00 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:23:20 17.5 3.0 5.9 Run 1 Point B 

### 7/21/201115:23:40 17.5 3.0 5.8 Run 1 Point B 

### 7/21/201115:24:00 17.5 3.0 5.6 Run 1 Point B 

### 7/21/201115:24:20 17.5 3.0 5.5 Run 1 Point B 

### 7/21/201115:24:40 17.6 2.9 5.4 Run 1 Point B 

### 7/21/201115:25:00 17.6 2.9 5.3 Run 1 Point B 

### 7/21/201115:25:20 17.5 3.0 5.2 Run 1 Point B 

### 7/21/201115:25:40 17.5 3.0 5.3 Run 1 Point B 

### 7/21/201115:26:00 17.5 3.0 5.2 Run 1 Point B 

### 7/21/201115:26:20 17.5 3.0 5.2 Run 1 Point B 

### 7/21/201115:26:40 17.5 3.0 5.1 Run 1 Point B 

### 7/21/201115:27:00 17.6 2.9 5.0 Run 1 Point B 

### 7/21/201115:27:20 17.6 2.9 4.8 Run 1 Point B 

### 7/21/201115:27:40 17.6 2.9 4.6 Run 1 Point B 

### 7/21/201115:28:00 17.6 2.9 4.6 Run 1 Point B 

### 7/21/201115:28:20 17.6 2.9 4.6 Run 1 Point B 

### 7/21/201115:28:40 17.6 2.9 4.4 Run 1 Point B 

### 7/21/201115:29:00 17.6 2.9 4.3 Run 1 Point B 

### 7/21/201115:29:20 17.6 2.9 4.1 Run 1 Point B 

### 7/21/201115:29:40 17.6 2.9 4.1 Run 1 Point B 

### 7/21/201115:30:00 17.6 2.9 4.0 Run 1 Point B 

### 7/21/201115:30:20 17.6 2.9 4.0 Run 1 Point B 

### 7/21/201115:30:40 17.6 2.9 4.1 Run 1 Point B 

### 7/21/201115:31:00 17.6 2.9 4.1 Run 1 Point B Page 

### 2 of 18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/21/11 9/10/2011 

### Virginia. Minnesota Fumace Stack D

TIMESTAMP 

## °2. % 

## CO2 •% 

## 502. ppm Notes 

### 7/21/201115:31:20 17.6 2.9 3.9 Run 1 Point B 

### 7/21/201115:31:40 17.6 2.8 3.9 Run 1 Point B 

### 7/21/201115:32:00 17.6 2.8 4.0 Run 1 Point B 

### 7/21/201115:32:20 17.6 2.8 4.1 Run 1 Point B 

### 7/21/201115:32:40 17.6 2.8 4.1 Run 1 Point B 

### 7/21/201115:33:00 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:33:20 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:33:40 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:34:00 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:34:20 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:34:40 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:35:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:35:20 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:35:40 17.7 2.9 3.8 Run 1 Point B 

### 7/21/201115:36:00 17.6 2.9 3.9 Run 1 Point B 

### 7/21/201115:36:20 17.7 2.9 3.9 Run 1 Point B 

### 7/21/201115:36:40 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:37:00 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:37:20 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:37:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:38:00 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:38:20 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:38:40 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:39:00 17.7 2.8 3.7 Run 1 Point B 

### 7/21/201115:39:20 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:39:40 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:40:00 17.7 2.8 3.3 Run 1 Point B 

### 7/21/201115:40:20 17.7 2.8 3.3 Run 1 Point B 

### 7/21/201115:40:40 17.7 2.8 3.4 Run 1 Point B 

### 7/21/201115:41:00 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:41:20 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:41:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:42:00 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:42:20 17.7 2.8 3.7 Run 1 Point B 

### 7/21/201115:42:40 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:43:00 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:43:20 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:43:40 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:44:00 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:44:20 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:44:40 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:45:00 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:45:20 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:45:40 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:46:00 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:46:20 17.6 2.9 3.6 Run 1 Point B 

### 7/21/201115:46:40 17.6 2.9 3.6 Run 1 Point B 

### 7/21/201115:47:00 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:47:20 17.7 2.8 3.7 Run 1 Point B 

### 7/21/201115:47:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:48:00 17.7 2.8 3.5 Run 1 Point B Page 3of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/21/11 9/10/2011 

### Virginia. Minnesota Fumace Stack D

TIMESTAMP 

## °2. % 

## CO2 •% 

## 502. ppm Notes 

### 7/21/201115:31:20 17.6 2.9 3.9 Run 1 Point B 

### 7/21/201115:31:40 17.6 2.8 3.9 Run 1 Point B 

### 7/21/201115:32:00 17.6 2.8 4.0 Run 1 Point B 

### 7/21/201115:32:20 17.6 2.8 4.1 Run 1 Point B 

### 7/21/201115:32:40 17.6 2.8 4.1 Run 1 Point B 

### 7/21/201115:33:00 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:33:20 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:33:40 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:34:00 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:34:20 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:34:40 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:35:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:35:20 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:35:40 17.7 2.9 3.8 Run 1 Point B 

### 7/21/201115:36:00 17.6 2.9 3.9 Run 1 Point B 

### 7/21/201115:36:20 17.7 2.9 3.9 Run 1 Point B 

### 7/21/201115:36:40 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:37:00 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:37:20 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:37:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:38:00 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:38:20 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:38:40 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:39:00 17.7 2.8 3.7 Run 1 Point B 

### 7/21/201115:39:20 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:39:40 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:40:00 17.7 2.8 3.3 Run 1 Point B 

### 7/21/201115:40:20 17.7 2.8 3.3 Run 1 Point B 

### 7/21/201115:40:40 17.7 2.8 3.4 Run 1 Point B 

### 7/21/201115:41:00 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:41:20 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:41:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:42:00 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:42:20 17.7 2.8 3.7 Run 1 Point B 

### 7/21/201115:42:40 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:43:00 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:43:20 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:43:40 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:44:00 17.7 2.8 3.5 Run 1 Point B 

### 7/21/201115:44:20 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:44:40 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:45:00 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:45:20 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:45:40 17.7 2.9 3.6 Run 1 Point B 

### 7/21/201115:46:00 17.7 2.9 3.5 Run 1 Point B 

### 7/21/201115:46:20 17.6 2.9 3.6 Run 1 Point B 

### 7/21/201115:46:40 17.6 2.9 3.6 Run 1 Point B 

### 7/21/201115:47:00 17.7 2.9 3.7 Run 1 Point B 

### 7/21/201115:47:20 17.7 2.8 3.7 Run 1 Point B 

### 7/21/201115:47:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:48:00 17.7 2.8 3.5 Run 1 Point B Page 3of 18

### ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia, Minnesota FurnaceStackD

TIMESTAMP 

# ° 2

, 

### % CO2, 

### % S02, ppm Notes 

### 7/21/201115:48:20 17.7 2.8 3.4 Run 1 Point B 

### 7/21/201115:48:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:49:00 17.7 2.9 3.9 Run 1 Point B 

### 7/21/201115:49:20 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:49:40 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:50:00 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:50:20 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:50:40 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:51:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:51:20 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:51:40 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:52:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:52:20 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:52:40 17.7 2.9 4.2 Run 1 Point B 

### 7/21/201115:53:00 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:53:20 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:53:40 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:54:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:54:20 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:54:40 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:55:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:55:20 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:55:40 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:56:00 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:56:20 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201115:56:40 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:57:00 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:57:20 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:57:40 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:58:00 17.8 2.7 4.3 Run 1 Point B 

### 7/21/201115:58:20 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201115:58:40 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201115:59:00 17.8 2.8 4.4 Run 1 Point B 

### 7/21/201115:59:20 17.8 2.8 4.4 Run 1 Point B 

### 7/21/201115:59:40 17.8 2.8 4.4 Run 1 Point B 

### 7/21/201116:00:00 17.8 2.7 4.3 Run 1 Point B 

### 7/21/201116:00:20 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201116:00:40 17.7 2.8 4.4 Run 1 Point B 

### 7/21/201116:01:00 17.7 2.8 4.4 Run 1 Point B 

### 7/21/201116:01:20 17.7 2.8 4.3 Run 1 Point B 

### 7/21/201116:01:40 17.7 2.8 4.3 Run 1 Point B 

### 7/21/201116:02:00 17.7 2.8 4.3 Run 1 Point B 

### 7/21/201116:02:20 17.7 2.8 4.4 Run 1 Point B 

### 7/21/201116:02:40 17.7 2.8 4.5 Run 1 Point B 

### 7/21/201116:03:00 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:03:20 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:03:40 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:04:00 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:04:20 17.7 2.7 4.6 Run 1 Point C 

### 7/21/201116:04:40 17.7 2.7 4.8 Run 1 Point C 

### 7/21/201116:05:00 17.7 2.8 4.9 Run 1 Point C


### Page4 of18 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia, Minnesota FurnaceStackD

TIMESTAMP 

# ° 2

, 

### % CO2, 

### % S02, ppm Notes 

### 7/21/201115:48:20 17.7 2.8 3.4 Run 1 Point B 

### 7/21/201115:48:40 17.7 2.8 3.6 Run 1 Point B 

### 7/21/201115:49:00 17.7 2.9 3.9 Run 1 Point B 

### 7/21/201115:49:20 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:49:40 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:50:00 17.7 2.8 3.8 Run 1 Point B 

### 7/21/201115:50:20 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:50:40 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:51:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:51:20 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:51:40 17.7 2.8 3.9 Run 1 Point B 

### 7/21/201115:52:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:52:20 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:52:40 17.7 2.9 4.2 Run 1 Point B 

### 7/21/201115:53:00 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:53:20 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:53:40 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:54:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:54:20 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:54:40 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:55:00 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:55:20 17.7 2.8 4.0 Run 1 Point B 

### 7/21/201115:55:40 17.7 2.8 4.1 Run 1 Point B 

### 7/21/201115:56:00 17.7 2.8 4.2 Run 1 Point B 

### 7/21/201115:56:20 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201115:56:40 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:57:00 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:57:20 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:57:40 17.8 2.7 4.4 Run 1 Point B 

### 7/21/201115:58:00 17.8 2.7 4.3 Run 1 Point B 

### 7/21/201115:58:20 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201115:58:40 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201115:59:00 17.8 2.8 4.4 Run 1 Point B 

### 7/21/201115:59:20 17.8 2.8 4.4 Run 1 Point B 

### 7/21/201115:59:40 17.8 2.8 4.4 Run 1 Point B 

### 7/21/201116:00:00 17.8 2.7 4.3 Run 1 Point B 

### 7/21/201116:00:20 17.8 2.8 4.3 Run 1 Point B 

### 7/21/201116:00:40 17.7 2.8 4.4 Run 1 Point B 

### 7/21/201116:01:00 17.7 2.8 4.4 Run 1 Point B 

### 7/21/201116:01:20 17.7 2.8 4.3 Run 1 Point B 

### 7/21/201116:01:40 17.7 2.8 4.3 Run 1 Point B 

### 7/21/201116:02:00 17.7 2.8 4.3 Run 1 Point B 

### 7/21/201116:02:20 17.7 2.8 4.4 Run 1 Point B 

### 7/21/201116:02:40 17.7 2.8 4.5 Run 1 Point B 

### 7/21/201116:03:00 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:03:20 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:03:40 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:04:00 17.7 2.8 4.5 Run 1 Point C 

### 7/21/201116:04:20 17.7 2.7 4.6 Run 1 Point C 

### 7/21/201116:04:40 17.7 2.7 4.8 Run 1 Point C 

### 7/21/201116:05:00 17.7 2.8 4.9 Run 1 Point C


### Page4 of18

### ArcelorMiltal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 • % CO2 • % S02. ppm Notes 7/21/201116:05:20 17.7 2.7 5.1 Run 1 Point C 7/21/201116:05:40 17.7 2.7 5.3 Run 1 Point C 7/21/201116:06:00 17.7 2.8 5.4 Run 1 Point C 7/21/201116:06:20 17.7 2.7 5.4 Run 1 Point C 7/21/201116:06:40 17.7 2.8 5.4 Run 1 Point C 7/21/201116:07:00 17.7 2.8 5.4 Run 1 Point C 7/21/201116:07:20 17.7 2.8 5.5 Run 1 Point C 7/21/201116:07:40 17.7 2.8 5.5 Run 1 Point C 7/21/201116:08:00 17.7 2.8 5.6 Run 1 Point C 7/21/201116:08:20 17.7 2.9 5.7 Run 1 PointC 7/21/201116:08:40 17.7 2.9 5.7 Run 1 Point C 7/21/201116:09:00 17.7 2.9 5.7 Run 1 Point C 7/21/201116:09:20 17.7 2.9 5.6 Run 1 Point C 7/21/201116:09:40 17.7 2.9 5.5 Run 1 Point C 7/21/201116:10:00 17.6 2.9 5.6 Run 1 Point C 7/21/201116:10:20 17.6 2.9 5.7 Run 1 Point C 7/21/201116:10:40 17.6 2.9 5.7 Run 1 Point C 7/21/201116:11:00 17.6 2.9 5.7 Run 1 Point C 7/21/201116:11:20 17.6 2.9 5.9 Run 1 Point C 7/21/201116:11:40 17.6 3.0 6.2 Run 1 Point C 7/21/201116:12:00 17.6 3.0 6.4 Run 1 Point C 7/21/201116:12:20 17.6 3.0 6.4 Run 1 Point C 7/21/201116:12:40 17.6 3.0 6.5 Run 1 Point C 7/21/201116:13:00 17.5 3.0 6.5 Run 1 Point C 7/21/201116:13:20 17.6 3.0 6.5 Run 1 Point C 7/21/201116:13:40 17.6 3.0 6.5 Run 1 Point C 7/21/201116:14:00 17.6 3.0 6.3 Run 1 PointC 7/21/201116:14:20 17.6 3.0 6.2 Run 1 PointC 7/21/201116:14:40 17.5 3.0 6.3 Run 1 Point C 7/21/201116:15:00 17.5 3.0 6.3 Run 1 Point C 7/21/201116:15:20 17.5 3.0 6.2 Run 1 Point C 7/21/201116:15:40 17.5 3.0 6.0 Run 1 Point C 7/21/201116:16:00 17.5 3.0 6.1 Run 1 Point C 7/21/201116:16:20 17.5 3.0 6.3 Run 1 Point C 7/21/201116:16:40 17.5 3.0 6.4 Run 1 Point C 7/21/201116:17:00 17.5 3.0 6.6 Run 1 Point C 7/21/201116:17:20 17.5 3.0 6.8 Run 1 Point C

7/21/201116:20:00 17.5 2.9 6.6 Run 1 PointA 7/21/201116:20:20 17.5 2.9 6.9 Run 1 PointA 7/21/201116:20:40 17.5 2.9 7.0 Run 1 PointA 7/21/201116:21:00 17.5 2.9 7.2 Run 1 PointA 7/21/201116:21:20 17.5 3.0 7.3 Run 1 PointA 7/21/201116:21:40 17.5 3.0 7.4 Run 1 PointA 7/21/201116:22:00 17.5 3.0 7.5 Run 1 PointA
Page5 of 18 ArcelorMiltal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 • % CO2 • % S02. ppm Notes 7/21/201116:05:20 17.7 2.7 5.1 Run 1 Point C 7/21/201116:05:40 17.7 2.7 5.3 Run 1 Point C 7/21/201116:06:00 17.7 2.8 5.4 Run 1 Point C 7/21/201116:06:20 17.7 2.7 5.4 Run 1 Point C 7/21/201116:06:40 17.7 2.8 5.4 Run 1 Point C 7/21/201116:07:00 17.7 2.8 5.4 Run 1 Point C 7/21/201116:07:20 17.7 2.8 5.5 Run 1 Point C 7/21/201116:07:40 17.7 2.8 5.5 Run 1 Point C 7/21/201116:08:00 17.7 2.8 5.6 Run 1 Point C 7/21/201116:08:20 17.7 2.9 5.7 Run 1 PointC 7/21/201116:08:40 17.7 2.9 5.7 Run 1 Point C 7/21/201116:09:00 17.7 2.9 5.7 Run 1 Point C 7/21/201116:09:20 17.7 2.9 5.6 Run 1 Point C 7/21/201116:09:40 17.7 2.9 5.5 Run 1 Point C 7/21/201116:10:00 17.6 2.9 5.6 Run 1 Point C 7/21/201116:10:20 17.6 2.9 5.7 Run 1 Point C 7/21/201116:10:40 17.6 2.9 5.7 Run 1 Point C 7/21/201116:11:00 17.6 2.9 5.7 Run 1 Point C 7/21/201116:11:20 17.6 2.9 5.9 Run 1 Point C 7/21/201116:11:40 17.6 3.0 6.2 Run 1 Point C 7/21/201116:12:00 17.6 3.0 6.4 Run 1 Point C 7/21/201116:12:20 17.6 3.0 6.4 Run 1 Point C 7/21/201116:12:40 17.6 3.0 6.5 Run 1 Point C 7/21/201116:13:00 17.5 3.0 6.5 Run 1 Point C 7/21/201116:13:20 17.6 3.0 6.5 Run 1 Point C 7/21/201116:13:40 17.6 3.0 6.5 Run 1 Point C 7/21/201116:14:00 17.6 3.0 6.3 Run 1 PointC 7/21/201116:14:20 17.6 3.0 6.2 Run 1 PointC 7/21/201116:14:40 17.5 3.0 6.3 Run 1 Point C 7/21/201116:15:00 17.5 3.0 6.3 Run 1 Point C 7/21/201116:15:20 17.5 3.0 6.2 Run 1 Point C 7/21/201116:15:40 17.5 3.0 6.0 Run 1 Point C 7/21/201116:16:00 17.5 3.0 6.1 Run 1 Point C 7/21/201116:16:20 17.5 3.0 6.3 Run 1 Point C 7/21/201116:16:40 17.5 3.0 6.4 Run 1 Point C 7/21/201116:17:00 17.5 3.0 6.6 Run 1 Point C 7/21/201116:17:20 17.5 3.0 6.8 Run 1 Point C

7/21/201116:20:00 17.5 2.9 6.6 Run 1 PointA 7/21/201116:20:20 17.5 2.9 6.9 Run 1 PointA 7/21/201116:20:40 17.5 2.9 7.0 Run 1 PointA 7/21/201116:21:00 17.5 2.9 7.2 Run 1 PointA 7/21/201116:21:20 17.5 3.0 7.3 Run 1 PointA 7/21/201116:21:40 17.5 3.0 7.4 Run 1 PointA 7/21/201116:22:00 17.5 3.0 7.5 Run 1 PointA
Page5 of 18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Fumace Stack D



### TIMESTAMP O2 •

### % CO2 • % S02. ppm Notes 

### 7/21/201116:22:20 17.5 3.0 7.5 Run 1 PointA 

### 7/21/201116:22:40 17.5 3.0 7.4 Run 1 PointA 

### 7/21/201116:23:00 17.5 3.0 7.2 Run 1 PointA 

### 7/21/201116:23:20 17.5 3.0 7.1 Run 1 PointA 

### 7/21/201116:23:40 17.5 3.0 6.9 Run 1 PointA 

### 7/21/201116:24:00 17.5 3.1 6.7 Run 1 PointA 

### 7/21/201116:24:20 17.4 3.1 6.7 Run 1 PointA 

### 7/21/201116:24:40 17.4 3.1 6.6 Run 1 PointA 

### 7/21/201116:25:00 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:25:20 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:25:40 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:26:00 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:26:20 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:26:40 17.4 3.1 6.5 Run 1 PointA 

### 7/21/201116:27:00 17.4 3.1 6.6 Run 1 PointA 

### 7/21/201116:27:20 17.4 3.1 6.7 Run 1 PointA 

### 7/21/201116:27:40 17.4 3.1 6.7 Run 1 PointA 

### 7/21/201116:28:00 17.4 3.1 6.7 7/21/201116:28:20 17.4 3.1 6.8 7/21/201116:28:40 17.4 3.1 6.7 7/21/2011 16:29:00 17.4 3.1 6.8 7/21/2011 16:29:20 17.4 3.1 6.9 7/21/201116:29:40 17.4 3.1 6.9 7/21/2011 16:30:00 17.4 3.1 6.9 7/21/201116:30:20 17.4 3.1 7.1 7/21/201116:30:40 17.4 3.1 7.2 7/21/2011 16:31:00 17.4 3.0 7.2 7/21/201116:31:20 17.4 3.0 7.1 7/21/201116:31:40 17.4 3.0 7.0 7/21/201116:32:00 17.4 3.0 6.9 7/21/201116:32:20 17.4 3.0 7.0 Bias Drift Check 

### 7/21/2011 16:32:40 17.2 3.0 7.2 Bias Drift Check 

### 7/21/201116:33:00 2.3 0.4 7.0 Bias Drift Check 

### 7/21/201116:33:20 0.1 0.2 5.1 Bias Drift Check 

### 7/21/201116:33:40 0.0 0.2 2.7 Bias Drift Check 

### 7/21/201116:34:00 0.0 0.2 1.6 Bias Drift Check 

### 7/21/201116:34:20 0.0 0.2 1.2 Bias Drift Check 

### 7/21/2011 16:34:40 0.0 0.1 1.0 Bias Drift Check 

### 7/21/201116:35:00 0.0 0.1 0.9 Bias Drift Check 

### 7/21/201116:35:20 

### 0.0 0.1 0.9 N2 Zero Bias Drift Check 

### 7/21/201116:35:40 0.0 0.1 0.9 Bias Drift Check 

### 7/21/201116:36:00 0.0 0.1 0.8 Bias Drift Check 

### 7/21/2011 16:36:20 0.3 0.3 0.7 Bias Drift Check 

### 7/21/201116:36:40 8.2 8.3 0.6 Bias Drift Check 

### 7/21/201116:37:00 8.8 8.8 0.1 Bias Drift Check 

### 7/21/201116:37:20 8.9 8.9 -0.2 Bias Drift Check 

### 7/21/201116:37:40 8.9 8.9 -0.1 Bias Drift Check 

### 7/21/201116:38:00 

### 8.9 9.0 -0.1 029.0/C02 9.0 Bias Drift Check 

### 7/21/201116:38:20 8.9 9.0 -0.1 Bias Drift Check 

### 7/21/201116:38:40 8.9 9.0 0.0 Bias Drift Check 

### 7/21/2011 16:39:00 3.9 3.9 0.0 Bias Drift Check
Page 6 of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Fumace Stack D



### TIMESTAMP O2 •

### % CO2 • % S02. ppm Notes 

### 7/21/201116:22:20 17.5 3.0 7.5 Run 1 PointA 

### 7/21/201116:22:40 17.5 3.0 7.4 Run 1 PointA 

### 7/21/201116:23:00 17.5 3.0 7.2 Run 1 PointA 

### 7/21/201116:23:20 17.5 3.0 7.1 Run 1 PointA 

### 7/21/201116:23:40 17.5 3.0 6.9 Run 1 PointA 

### 7/21/201116:24:00 17.5 3.1 6.7 Run 1 PointA 

### 7/21/201116:24:20 17.4 3.1 6.7 Run 1 PointA 

### 7/21/201116:24:40 17.4 3.1 6.6 Run 1 PointA 

### 7/21/201116:25:00 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:25:20 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:25:40 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:26:00 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:26:20 17.4 3.1 6.4 Run 1 PointA 

### 7/21/201116:26:40 17.4 3.1 6.5 Run 1 PointA 

### 7/21/201116:27:00 17.4 3.1 6.6 Run 1 PointA 

### 7/21/201116:27:20 17.4 3.1 6.7 Run 1 PointA 

### 7/21/201116:27:40 17.4 3.1 6.7 Run 1 PointA 

### 7/21/201116:28:00 17.4 3.1 6.7 7/21/201116:28:20 17.4 3.1 6.8 7/21/201116:28:40 17.4 3.1 6.7 7/21/2011 16:29:00 17.4 3.1 6.8 7/21/2011 16:29:20 17.4 3.1 6.9 7/21/201116:29:40 17.4 3.1 6.9 7/21/2011 16:30:00 17.4 3.1 6.9 7/21/201116:30:20 17.4 3.1 7.1 7/21/201116:30:40 17.4 3.1 7.2 7/21/2011 16:31:00 17.4 3.0 7.2 7/21/201116:31:20 17.4 3.0 7.1 7/21/201116:31:40 17.4 3.0 7.0 7/21/201116:32:00 17.4 3.0 6.9 7/21/201116:32:20 17.4 3.0 7.0 Bias Drift Check 

### 7/21/2011 16:32:40 17.2 3.0 7.2 Bias Drift Check 

### 7/21/201116:33:00 2.3 0.4 7.0 Bias Drift Check 

### 7/21/201116:33:20 0.1 0.2 5.1 Bias Drift Check 

### 7/21/201116:33:40 0.0 0.2 2.7 Bias Drift Check 

### 7/21/201116:34:00 0.0 0.2 1.6 Bias Drift Check 

### 7/21/201116:34:20 0.0 0.2 1.2 Bias Drift Check 

### 7/21/2011 16:34:40 0.0 0.1 1.0 Bias Drift Check 

### 7/21/201116:35:00 0.0 0.1 0.9 Bias Drift Check 

### 7/21/201116:35:20 

### 0.0 0.1 0.9 N2 Zero Bias Drift Check 

### 7/21/201116:35:40 0.0 0.1 0.9 Bias Drift Check 

### 7/21/201116:36:00 0.0 0.1 0.8 Bias Drift Check 

### 7/21/2011 16:36:20 0.3 0.3 0.7 Bias Drift Check 

### 7/21/201116:36:40 8.2 8.3 0.6 Bias Drift Check 

### 7/21/201116:37:00 8.8 8.8 0.1 Bias Drift Check 

### 7/21/201116:37:20 8.9 8.9 -0.2 Bias Drift Check 

### 7/21/201116:37:40 8.9 8.9 -0.1 Bias Drift Check 

### 7/21/201116:38:00 

### 8.9 9.0 -0.1 029.0/C02 9.0 Bias Drift Check 

### 7/21/201116:38:20 8.9 9.0 -0.1 Bias Drift Check 

### 7/21/201116:38:40 8.9 9.0 0.0 Bias Drift Check 

### 7/21/2011 16:39:00 3.9 3.9 0.0 Bias Drift Check
Page 6 of 18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia, Minnesota Fumace Stack D

TIMESTAMP O2, 

### % CO2, 

### % S02, ppm Notes 7/21/201116:39:20 0.1 0.3 0.7 Bias Drift Check 7/21/201116:39:40 0.0 0.2 2.4 Bias Drift Check 7/21/201116:40:00 0.0 0.2 3.9 Bias Drift Check 7/21/201116:40:20 0.0 0.2 4.5 Bias Drift Check 7/21/201116:40:40 0.0 0.2 4.6 Bias Drift Check 7/21/201116:41:00 0.0 0.1 4.6 Bias Drift Check 7/21/201116:41:20 0.0 0.1 4.7 Bias Drift Check 7/21/201116:41:40 0.0 0.1 4.9 Bias Drift Check 7/21/201116:42:00 0.0 0.1 5.0 Bias Drift Check 7/21/201116:42:20 0.0 0.1 4.9 Bias Drift Check 7/21/201116:42:40 0.0 0.1 5.0 Bias Drift Check 7/21/201116:43:00 0.0 0.1 5.1 Bias Drift Check 7/21/201116:43:20 0.0 0.1 5.1 Bias Drift Check 7/21/201116:43:40 0.0 0.1 5.1 Bias Drift Check 7/21/201116:44:00 0.0 0.1 10.0 Bias Drift Check 7/21/201116:44:20 0.0 0.1 20.0 Bias Drift Check 7/21/201116:44:40 0.0 0.1 22.2 Bias Drift Check 7/21/201116:45:00 0.0 0.1 23.3 Bias Drift Check 7/21/201116:45:20 0.0 0.1 23.8 Bias Drift Check 7/21/201116:45:40 0.0 0.1 24.3 Bias Drift Check 7/21/201116:46:00 0.0 0.1 24.8 Bias Drift Check 7/21/201116:46:20 0.0 0.1 25.2 Bias Drift Check 7/21/201116:46:40 0.0 0.1 25.6 Bias Drift Check 7/21/201116:47:00 0.0 0.1 

### 25.6 S02 27.0 ppm Bias Drift Check 7/21/201116:47:20 0.0 0.1 25.6 Bias Drift Check 7/21/201116:47:40 0.0 0.1 25.8 Bias Drift Check 7/21/201116:48:00 7.0 4.6 16.9 Bias Drift Check 7/21/201116:48:20 0.1 0.1 5.7 7/21/201116:48:40 0.0 0.1 10.5 7/21/201116:49:00 0.0 0.0 18.4 7/21/201116:49:20 0.0 0.0 24.5 7/21/201116:49:40 0.0 0.0 28.6 7/21/201116:50:00 0.0 0.0 32.0 7/21/201116:50:20 0.0 0.0 34.7 7/21/201116:50:40 2.3 0.1 27.3 7/21/201116:51:00 0.1 0.0 52.4 7/21/201116:51:20 0.0 0.0 74.3

7/21/201117:04:40 12.5 2.0 5.1 7/21/201117:05:00 17.7 2.7 4.4 In Stack 7/21/201117:05:20 17.8 2.7 3.9 In Stack 7/21/201117:05:40 17.8 2.7 3.9 In Stack 7/21/201117:06:00 17.8 2.7 3.9 In Stack 7/21/201117:06:20 17.8 2.7 4.1 In Stack 7/21/201117:06:40 17.8 2.8 4.2 In Stack 7/21/201117:07:00 17.8 2.8 4.3 Run2 7/21/201117:07:20 17.8 2.8 4.3 Run2 7/21/201117:07:40 17.8 2.8 4.2 Run2 7/21/201117:08:00 17.8 2.8 4.2 Run 2 7/21/201117:08:20 17.8 2.8 4.2 Run 2 7/21/201117:08:40 17.8 2.8 4.0 Run 2 Page 7of18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia, Minnesota Fumace Stack D

TIMESTAMP O2, 

### % CO2, 

### % S02, ppm Notes 7/21/201116:39:20 0.1 0.3 0.7 Bias Drift Check 7/21/201116:39:40 0.0 0.2 2.4 Bias Drift Check 7/21/201116:40:00 0.0 0.2 3.9 Bias Drift Check 7/21/201116:40:20 0.0 0.2 4.5 Bias Drift Check 7/21/201116:40:40 0.0 0.2 4.6 Bias Drift Check 7/21/201116:41:00 0.0 0.1 4.6 Bias Drift Check 7/21/201116:41:20 0.0 0.1 4.7 Bias Drift Check 7/21/201116:41:40 0.0 0.1 4.9 Bias Drift Check 7/21/201116:42:00 0.0 0.1 5.0 Bias Drift Check 7/21/201116:42:20 0.0 0.1 4.9 Bias Drift Check 7/21/201116:42:40 0.0 0.1 5.0 Bias Drift Check 7/21/201116:43:00 0.0 0.1 5.1 Bias Drift Check 7/21/201116:43:20 0.0 0.1 5.1 Bias Drift Check 7/21/201116:43:40 0.0 0.1 5.1 Bias Drift Check 7/21/201116:44:00 0.0 0.1 10.0 Bias Drift Check 7/21/201116:44:20 0.0 0.1 20.0 Bias Drift Check 7/21/201116:44:40 0.0 0.1 22.2 Bias Drift Check 7/21/201116:45:00 0.0 0.1 23.3 Bias Drift Check 7/21/201116:45:20 0.0 0.1 23.8 Bias Drift Check 7/21/201116:45:40 0.0 0.1 24.3 Bias Drift Check 7/21/201116:46:00 0.0 0.1 24.8 Bias Drift Check 7/21/201116:46:20 0.0 0.1 25.2 Bias Drift Check 7/21/201116:46:40 0.0 0.1 25.6 Bias Drift Check 7/21/201116:47:00 0.0 0.1 

### 25.6 S02 27.0 ppm Bias Drift Check 7/21/201116:47:20 0.0 0.1 25.6 Bias Drift Check 7/21/201116:47:40 0.0 0.1 25.8 Bias Drift Check 7/21/201116:48:00 7.0 4.6 16.9 Bias Drift Check 7/21/201116:48:20 0.1 0.1 5.7 7/21/201116:48:40 0.0 0.1 10.5 7/21/201116:49:00 0.0 0.0 18.4 7/21/201116:49:20 0.0 0.0 24.5 7/21/201116:49:40 0.0 0.0 28.6 7/21/201116:50:00 0.0 0.0 32.0 7/21/201116:50:20 0.0 0.0 34.7 7/21/201116:50:40 2.3 0.1 27.3 7/21/201116:51:00 0.1 0.0 52.4 7/21/201116:51:20 0.0 0.0 74.3

7/21/201117:04:40 12.5 2.0 5.1 7/21/201117:05:00 17.7 2.7 4.4 In Stack 7/21/201117:05:20 17.8 2.7 3.9 In Stack 7/21/201117:05:40 17.8 2.7 3.9 In Stack 7/21/201117:06:00 17.8 2.7 3.9 In Stack 7/21/201117:06:20 17.8 2.7 4.1 In Stack 7/21/201117:06:40 17.8 2.8 4.2 In Stack 7/21/201117:07:00 17.8 2.8 4.3 Run2 7/21/201117:07:20 17.8 2.8 4.3 Run2 7/21/201117:07:40 17.8 2.8 4.2 Run2 7/21/201117:08:00 17.8 2.8 4.2 Run 2 7/21/201117:08:20 17.8 2.8 4.2 Run 2 7/21/201117:08:40 17.8 2.8 4.0 Run 2 Page 7of18

### ArcelorMitlal Data Logger Output Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack 0



### TIMESTAMP 

## O2• 

### % 

## CO2• 

## % 

## 502• 

### ppm Notes 

### 7/21/201117:09:00 17.8 2.8 4.0 

### Run 2 7/21/201117:09:20 17.8 2.8 3.9 

### Run 2 7/21/201117:09:40 17.8 2.8 3.9 

### Run 2 7/21/201117:10:00 17.8 2.8 3.9 

### Run2 7/21/201117:10:20 17.8 2.8 3.9 

### Run 2 7/21/201117:10:40 17.8 2.8 3.9 

### Run 2 7/21/201117:11:00 17.8 2.8 3.8 

### Run 2 7/21/201117:11:20 17.8 2.8 3.7 

### Run 2 7/21/201117:11:40 17.9 2.7 3.7 

### Run2 7/21/201117:12:00 17.9 2.7 3.6 

### Run 2 7/21/201117:12:20 17.8 2.7 3.7 

### Run2 7/21/201117:12:40 17.8 2.7 3.8 

### Run 2 7/21/201117:13:00 17.8 2.7 3.9 

### Run 2 7/21/201117:13:20 17.8 2.7 4.1 

### Run 2 7/21/201117:13:40 17.8 2.7 4.1 

### Run 2 7/21/201117:14:00 17.8 2.7 4.1 

### Run 2 7/21/201117:14:20 17.8 2.7 4.0 

### Run 2 7/21/201117:14:40 17.8 2.7 4.0 

### Run 2 7/21/201117:15:00 17.8 2.7 4.1 

### Run2 7/21/201117:15:20 17.8 2.7 4.3 

### Run 2 7/21/201117:15:40 17.8 2.7 4.4 

### Run 2 7/21/201117:16:00 17.8 2.7 4.4 

### Run 2 7/21/201117:16:20 17.8 2.7 4.5 

### Run2 7/21/201117:16:40 17.8 2.7 4.7 

### Run 2 7/21/201117:17:00 17.8 2.7 4.8 

### Run 2 7/21/201117:17:20 17.8 2.7 4.7 

### Run 2 7/21/201117:17:40 17.8 2.7 4.6 

### Run2 7/21/201117:18:00 17.8 2.7 4.8 

### Run2 7/21/201117:18:20 17.8 2.7 5.0 

### Run2 7/21/201117:18:40 17.8 2.7 5.0 

### Run 2 7/21/201117:19:00 17.8 2.7 5.0 

### Run2 7/21/201117:19:20 17.8 2.7 5.0 

### Run 2 7/21/201117:19:40 17.8 2.7 5.1 

### Run2 7/21/201117:20:00 17.8 2.7 5.3 

### Run 2 7/21/201117:20:20 17.8 2.7 5.6 

### Run2 7/21/201117:20:40 17.8 2.7 5.6 

### Run2 7/21/201117:21:00 17.8 2.8 5.6 

### Run 2 7/21/201117:21:20 17.8 2.8 5.7 

### Run 2 7/21/201117:21:40 17.8 2.8 5.6 

### Run 2 7/21/201117:22:00 17.8 2.8 5.6 

### Run2 7/21/201117:22:20 17.8 2.8 5.7 

### Run 2 7/21/201117:22:40 17.7 2.8 5.6 

### Run 2 7/21/201117:23:00 17.7 2.8 5.6 

### Run2 7/21/201117:23:20 17.7 2.9 5.6 

### Run2 7/21/201117:23:40 17.7 2.9 5.6 

### Run 2 7/21/201117:24:00 17.7 2.9 5.6 

### Run 2 7/21/201117:24:20 17.7 2.9 5.4 

### Run 2 7/21/201117:24:40 17.7 2.9 5.3 

### Run 2 7/21/201117:25:00 17.6 3.0 5.4 

### Run2 7/21/201117:25:20 17.6 3.0 5.5 

### Run2 7/21/201117:25:40 17.6 3.0 5.5 

### Run 2
Page 8 of 18 ArcelorMitlal Data Logger Output Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack 0



### TIMESTAMP 

## O2• 

### % 

## CO2• 

## % 

## 502• 

### ppm Notes 

### 7/21/201117:09:00 17.8 2.8 4.0 

### Run 2 7/21/201117:09:20 17.8 2.8 3.9 

### Run 2 7/21/201117:09:40 17.8 2.8 3.9 

### Run 2 7/21/201117:10:00 17.8 2.8 3.9 

### Run2 7/21/201117:10:20 17.8 2.8 3.9 

### Run 2 7/21/201117:10:40 17.8 2.8 3.9 

### Run 2 7/21/201117:11:00 17.8 2.8 3.8 

### Run 2 7/21/201117:11:20 17.8 2.8 3.7 

### Run 2 7/21/201117:11:40 17.9 2.7 3.7 

### Run2 7/21/201117:12:00 17.9 2.7 3.6 

### Run 2 7/21/201117:12:20 17.8 2.7 3.7 

### Run2 7/21/201117:12:40 17.8 2.7 3.8 

### Run 2 7/21/201117:13:00 17.8 2.7 3.9 

### Run 2 7/21/201117:13:20 17.8 2.7 4.1 

### Run 2 7/21/201117:13:40 17.8 2.7 4.1 

### Run 2 7/21/201117:14:00 17.8 2.7 4.1 

### Run 2 7/21/201117:14:20 17.8 2.7 4.0 

### Run 2 7/21/201117:14:40 17.8 2.7 4.0 

### Run 2 7/21/201117:15:00 17.8 2.7 4.1 

### Run2 7/21/201117:15:20 17.8 2.7 4.3 

### Run 2 7/21/201117:15:40 17.8 2.7 4.4 

### Run 2 7/21/201117:16:00 17.8 2.7 4.4 

### Run 2 7/21/201117:16:20 17.8 2.7 4.5 

### Run2 7/21/201117:16:40 17.8 2.7 4.7 

### Run 2 7/21/201117:17:00 17.8 2.7 4.8 

### Run 2 7/21/201117:17:20 17.8 2.7 4.7 

### Run 2 7/21/201117:17:40 17.8 2.7 4.6 

### Run2 7/21/201117:18:00 17.8 2.7 4.8 

### Run2 7/21/201117:18:20 17.8 2.7 5.0 

### Run2 7/21/201117:18:40 17.8 2.7 5.0 

### Run 2 7/21/201117:19:00 17.8 2.7 5.0 

### Run2 7/21/201117:19:20 17.8 2.7 5.0 

### Run 2 7/21/201117:19:40 17.8 2.7 5.1 

### Run2 7/21/201117:20:00 17.8 2.7 5.3 

### Run 2 7/21/201117:20:20 17.8 2.7 5.6 

### Run2 7/21/201117:20:40 17.8 2.7 5.6 

### Run2 7/21/201117:21:00 17.8 2.8 5.6 

### Run 2 7/21/201117:21:20 17.8 2.8 5.7 

### Run 2 7/21/201117:21:40 17.8 2.8 5.6 

### Run 2 7/21/201117:22:00 17.8 2.8 5.6 

### Run2 7/21/201117:22:20 17.8 2.8 5.7 

### Run 2 7/21/201117:22:40 17.7 2.8 5.6 

### Run 2 7/21/201117:23:00 17.7 2.8 5.6 

### Run2 7/21/201117:23:20 17.7 2.9 5.6 

### Run2 7/21/201117:23:40 17.7 2.9 5.6 

### Run 2 7/21/201117:24:00 17.7 2.9 5.6 

### Run 2 7/21/201117:24:20 17.7 2.9 5.4 

### Run 2 7/21/201117:24:40 17.7 2.9 5.3 

### Run 2 7/21/201117:25:00 17.6 3.0 5.4 

### Run2 7/21/201117:25:20 17.6 3.0 5.5 

### Run2 7/21/201117:25:40 17.6 3.0 5.5 

### Run 2
Page 8 of 18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP 

## °2. % 

## CO2• 

### % 

## 502. ppm Notes 7/21/201117:26:00 17.6 3.0 5.4 Run 2 7/21/201117:26:20 17.6 3.0 5.3 Run 2 7/21/201117:26:40 17.6 3.1 5.3 Run 2 7/21/201117:27:00 17.6 3.1 5.3 Run 2 7/21/201117:27:20 17.6 3.1 5.3 Run 2 7/21/201117:27:40 17.6 3.0 5.3 Run2 7/21/201117:28:00 17.6 3.0 5.5 Run 2 7/21/201117:28:20 17.6 3.0 5.9 Run2 7/21/201117:28:40 17.6 3.0 6.3 Run 2 7/21/201117:29:00 17.6 3.0 6.5 Run 2 7/21/201117:29:20 17.6 3.0 6.6 Run 2 7/21/201117:29:40 17.6 3.0 6.8 Run 2 7/21/201117:30:00 17.6 3.0 7.1 Run2 7/21/201117:30:20 17.6 3.0 7.5 Run 2 7/21/201117:30:40 17.6 3.0 7.5 Run 2 7/21/201117:31:00 17.6 3.0 7.5 Run 2 7/21/201117:31:20 17.6 3.0 7.6 Run 2 7/21/201117:31:40 17.6 3.0 7.7 Run 2 7/21/201117:32:00 17.6 3.0 7.7 Run 2 7/21/201117:32:20 17.6 3.0 7.9 Run2 7/21/201117:32:40 17.6 3.0 8.1 Run2 7/21/201117:33:00 17.6 3.0 8.3 Run2 7/21/201117:33:20 17.6 3.0 8.7 Run 2 7/21/201117:33:40 17.6 2.9 9.0 Run 2 7/21/201117:34:00 17.6 3.0 9.0 Run 2 7/21/201117:34:20 17.6 3.0 9.1 Run 2 7/21/201117:34:40 17.6 3.0 9.2 Run2 7/21/201117:35:00 17.6 3.0 9.1 Run2 7/21/201117:35:20 17.6 3.0 8.9 Run2 7/21/201117:35:40 17.6 3.0 8.7 Run 2 7/21/201117:36:00 17.6 3.0 8.7 Run 2 7/21/201117:36:20 17.6 3.0 8.8 Run 2 7/21/201117:36:40 17.6 3.0 8.7 Run2 7/21/201117:37:00 17.6 2.9 8.7 Run2 7/21/201117:37:20 17.6 2.9 8.7 Run 2 7/21/201117:37:40 17.6 2.9 8.8 Run 2 7/21/201117:38:00 17.6 2.9 8.8 Run 2 7/21/201117:38:20 17.6 2.9 8.9 Run2 7/21/201117:38:40 17.6 2.9 9.0 Run 2 7/21/201117:39:00 17.6 2.9 9.0 Run 2 7/21/201117:39:20 17.6 2.9 9.1 Run2 7/21/201117:39:40 17.6 2.9 9.1 Run 2 7/21/201117:40:00 17.6 2.9 9.1 Run 2 7/21/201117:40:20 17.6 2.9 9.3 Run2 7/21/201117:40:40 17.6 3.0 9.4 Run 2 7/21/201117:41:00 17.6 3.0 9.4 Run 2 7/21/201117:41:20 17.6 3.0 9.2 Run 2 7/21/201117:41:40 17.6 3.0 9.1 Run2 7/21/201117:42:00 17.6 3.0 9.1 Run 2 7/21/201117:42:20 17.6 3.0 9.0 Run 2 7/21/201117:42:40 17.6 3.0 9.2 Run 2
Page 9 of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP 

## °2. % 

## CO2• 

### % 

## 502. ppm Notes 7/21/201117:26:00 17.6 3.0 5.4 Run 2 7/21/201117:26:20 17.6 3.0 5.3 Run 2 7/21/201117:26:40 17.6 3.1 5.3 Run 2 7/21/201117:27:00 17.6 3.1 5.3 Run 2 7/21/201117:27:20 17.6 3.1 5.3 Run 2 7/21/201117:27:40 17.6 3.0 5.3 Run2 7/21/201117:28:00 17.6 3.0 5.5 Run 2 7/21/201117:28:20 17.6 3.0 5.9 Run2 7/21/201117:28:40 17.6 3.0 6.3 Run 2 7/21/201117:29:00 17.6 3.0 6.5 Run 2 7/21/201117:29:20 17.6 3.0 6.6 Run 2 7/21/201117:29:40 17.6 3.0 6.8 Run 2 7/21/201117:30:00 17.6 3.0 7.1 Run2 7/21/201117:30:20 17.6 3.0 7.5 Run 2 7/21/201117:30:40 17.6 3.0 7.5 Run 2 7/21/201117:31:00 17.6 3.0 7.5 Run 2 7/21/201117:31:20 17.6 3.0 7.6 Run 2 7/21/201117:31:40 17.6 3.0 7.7 Run 2 7/21/201117:32:00 17.6 3.0 7.7 Run 2 7/21/201117:32:20 17.6 3.0 7.9 Run2 7/21/201117:32:40 17.6 3.0 8.1 Run2 7/21/201117:33:00 17.6 3.0 8.3 Run2 7/21/201117:33:20 17.6 3.0 8.7 Run 2 7/21/201117:33:40 17.6 2.9 9.0 Run 2 7/21/201117:34:00 17.6 3.0 9.0 Run 2 7/21/201117:34:20 17.6 3.0 9.1 Run 2 7/21/201117:34:40 17.6 3.0 9.2 Run2 7/21/201117:35:00 17.6 3.0 9.1 Run2 7/21/201117:35:20 17.6 3.0 8.9 Run2 7/21/201117:35:40 17.6 3.0 8.7 Run 2 7/21/201117:36:00 17.6 3.0 8.7 Run 2 7/21/201117:36:20 17.6 3.0 8.8 Run 2 7/21/201117:36:40 17.6 3.0 8.7 Run2 7/21/201117:37:00 17.6 2.9 8.7 Run2 7/21/201117:37:20 17.6 2.9 8.7 Run 2 7/21/201117:37:40 17.6 2.9 8.8 Run 2 7/21/201117:38:00 17.6 2.9 8.8 Run 2 7/21/201117:38:20 17.6 2.9 8.9 Run2 7/21/201117:38:40 17.6 2.9 9.0 Run 2 7/21/201117:39:00 17.6 2.9 9.0 Run 2 7/21/201117:39:20 17.6 2.9 9.1 Run2 7/21/201117:39:40 17.6 2.9 9.1 Run 2 7/21/201117:40:00 17.6 2.9 9.1 Run 2 7/21/201117:40:20 17.6 2.9 9.3 Run2 7/21/201117:40:40 17.6 3.0 9.4 Run 2 7/21/201117:41:00 17.6 3.0 9.4 Run 2 7/21/201117:41:20 17.6 3.0 9.2 Run 2 7/21/201117:41:40 17.6 3.0 9.1 Run2 7/21/201117:42:00 17.6 3.0 9.1 Run 2 7/21/201117:42:20 17.6 3.0 9.0 Run 2 7/21/201117:42:40 17.6 3.0 9.2 Run 2
Page 9 of 18

### ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia, Minnesota FurnaceStack0

TIMESTAMP O2 , 

### % CO2, 

## % S02, 

### ppm Notes 

### 7/21/201117:43:00 17.6 3.0 9.2 

### Run 2 7/21/201117:43:20 17.6 3.0 9.1 

### Run 2 7/21/201117:43:40 17.6 3.0 9.0 

### Run 2 7/21/201117:44:00 17.6 3.0 8.9 

### Run 2 7/21/201117:44:20 17.5 3.0 9.0 

### Run2 7/21/201117:44:40 17.5 3.0 9.0 

### Run2 7/21/201117:45:00 17.6 3.0 9.0 

### Run2 7/21/201117:45:20 17.6 3.0 8.9 

### Run2 7/21/201117:45:40 17.6 3.0 8.8 

### Run2 7/21/201117:46:00 17.6 3.0 8.8 

### Run 2 7/21/201117:46:20 17.6 3.0 8.8 

### Run 2 7/21/201117:46:40 17.6 3.0 8.8 

### Run 2 7/21/201117:47:00 17.6 3.0 8.9 

### Run 2 7/21/201117:47:20 17.6 3.0 8.9 

### Run2 7/21/201117:47:40 17.6 2.9 9.0 

### Run2 7/21/201117:48:00 17.6 2.9 9.0 

### Run 2 7/21/201117:48:20 17.7 2.9 9.1 

### Run 2 7/21/201117:48:40 17.7 2.9 9.2 

### Run 2 7/21/201117:49:00 17.7 2.9 9.3 

### Run2 7/21/201117:49:20 17.7 2.8 9.5 

### Run 2 7/21/201117:49:40 17.7 2.8 9.5 

### Run 2 7/21/201117:50:00 17.7 2.8 9.7 

### Run2 7/21/201117:50:20 17.7 2.8 10.1 

### Run 2 7/21/201117:50:40 17.7 2.8 10.4 

### Run 2 7/21/201117:51:00 17.7 2.8 10.4 

### Run 2 7/21/201117:51:20 17.7 2.8 10.1 

### Run 2 7/21/201117:51:40 17.7 2.8 9.8 

### Run 2 7/21/201117:52:00 17.7 2.8 9.6 

### Run 2 7/21/201117:52:20 17.8 2.8 9.2 

### Run2 7/21/201117:52:40 17.8 2.8 8.9 

### Run 2 7/21/201117:53:00 17.8 2.8 8.5 

### Run 2 7/21/201117:53:20 17.8 2.8 8.2 

### Run 2 7/21/201117:53:40 17.8 2.8 8.1 

### Run 2 7/21/201117:54:00 17.8 2.8 8.0 

### Run 2 7/21/201117:54:20 17.8 2.8 7.8 

### Run2 7/21/201117:54:40 17.8 2.8 7.6 

### Run 2 7/21/201117:55:00 17.8 2.8 7.6 

### Run 2 7/21/201117:55:20 17.8 2.8 7.6 

### Run 2 7/21/201117:55:40 17.8 2.8 7.7 

### Run 2 7/21/201117:56:00 17.8 2.8 7.8 

### Run2 7/21/201117:56:20 17.8 2.8 7.8 

### Run 2 7/21/201117:56:40 17.8 2.7 7.7 

### Run 2 7/21/201117:57:00 17.8 2.7 7.7 

### Run 2 7/21/201117:57:20 17.9 2.7 7.8 

### Run 2 7/21/201117:57:40 17.9 2.7 7.9 

### Run 2 7/21/201117:58:00 17.9 2.7 7.7 

### Run2 7/21/201117:58:20 17.9 2.7 7.6 

### Run 2 7/21/201117:58:40 17.8 2.7 7.7 

### Run 2 7/21/201117:59:00 17.8 2.7 7.6 

### Run 2 7/21/201117:59:20 17.9 2.7 7.7 

### Run2 7/21/201117:59:40 17.9 2.7 7.8 

### Run2
Page 10of18 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia, Minnesota FurnaceStack0

TIMESTAMP O2 , 

### % CO2, 

## % S02, 

### ppm Notes 

### 7/21/201117:43:00 17.6 3.0 9.2 

### Run 2 7/21/201117:43:20 17.6 3.0 9.1 

### Run 2 7/21/201117:43:40 17.6 3.0 9.0 

### Run 2 7/21/201117:44:00 17.6 3.0 8.9 

### Run 2 7/21/201117:44:20 17.5 3.0 9.0 

### Run2 7/21/201117:44:40 17.5 3.0 9.0 

### Run2 7/21/201117:45:00 17.6 3.0 9.0 

### Run2 7/21/201117:45:20 17.6 3.0 8.9 

### Run2 7/21/201117:45:40 17.6 3.0 8.8 

### Run2 7/21/201117:46:00 17.6 3.0 8.8 

### Run 2 7/21/201117:46:20 17.6 3.0 8.8 

### Run 2 7/21/201117:46:40 17.6 3.0 8.8 

### Run 2 7/21/201117:47:00 17.6 3.0 8.9 

### Run 2 7/21/201117:47:20 17.6 3.0 8.9 

### Run2 7/21/201117:47:40 17.6 2.9 9.0 

### Run2 7/21/201117:48:00 17.6 2.9 9.0 

### Run 2 7/21/201117:48:20 17.7 2.9 9.1 

### Run 2 7/21/201117:48:40 17.7 2.9 9.2 

### Run 2 7/21/201117:49:00 17.7 2.9 9.3 

### Run2 7/21/201117:49:20 17.7 2.8 9.5 

### Run 2 7/21/201117:49:40 17.7 2.8 9.5 

### Run 2 7/21/201117:50:00 17.7 2.8 9.7 

### Run2 7/21/201117:50:20 17.7 2.8 10.1 

### Run 2 7/21/201117:50:40 17.7 2.8 10.4 

### Run 2 7/21/201117:51:00 17.7 2.8 10.4 

### Run 2 7/21/201117:51:20 17.7 2.8 10.1 

### Run 2 7/21/201117:51:40 17.7 2.8 9.8 

### Run 2 7/21/201117:52:00 17.7 2.8 9.6 

### Run 2 7/21/201117:52:20 17.8 2.8 9.2 

### Run2 7/21/201117:52:40 17.8 2.8 8.9 

### Run 2 7/21/201117:53:00 17.8 2.8 8.5 

### Run 2 7/21/201117:53:20 17.8 2.8 8.2 

### Run 2 7/21/201117:53:40 17.8 2.8 8.1 

### Run 2 7/21/201117:54:00 17.8 2.8 8.0 

### Run 2 7/21/201117:54:20 17.8 2.8 7.8 

### Run2 7/21/201117:54:40 17.8 2.8 7.6 

### Run 2 7/21/201117:55:00 17.8 2.8 7.6 

### Run 2 7/21/201117:55:20 17.8 2.8 7.6 

### Run 2 7/21/201117:55:40 17.8 2.8 7.7 

### Run 2 7/21/201117:56:00 17.8 2.8 7.8 

### Run2 7/21/201117:56:20 17.8 2.8 7.8 

### Run 2 7/21/201117:56:40 17.8 2.7 7.7 

### Run 2 7/21/201117:57:00 17.8 2.7 7.7 

### Run 2 7/21/201117:57:20 17.9 2.7 7.8 

### Run 2 7/21/201117:57:40 17.9 2.7 7.9 

### Run 2 7/21/201117:58:00 17.9 2.7 7.7 

### Run2 7/21/201117:58:20 17.9 2.7 7.6 

### Run 2 7/21/201117:58:40 17.8 2.7 7.7 

### Run 2 7/21/201117:59:00 17.8 2.7 7.6 

### Run 2 7/21/201117:59:20 17.9 2.7 7.7 

### Run2 7/21/201117:59:40 17.9 2.7 7.8 

### Run2
Page 10of18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 

## .% CO2 •

## % S02. ppm Notes 7/21/201118:00:00 17.9 2.7 7.7 

### Run2 7/21/201118:00:20 17.9 2.7 7.7 

### Run2 7/21/201118:00:40 17.9 2.7 7.9 

### Run 2 7/21/201118:01:00 17.8 2.7 7.8 

### Run 2 7/21/201118:01:20 17.8 2.7 7.6 

### Run 2 7/21/201118:01:40 17.8 2.7 7.5 

### Run 2 7/21/201118:02:00 17.9 2.7 7.5 

### Run 2 7/21/201118:02:20 17.9 2.7 7.5 

### Run2 7/21/201118:02:40 17.9 2.7 7.2 

### Run2 7/21/201118:03:00 17.9 2.7 6.9 

### Run2 7/21/201118:03:20 17.8 2.7 6.8 

### Run 2 7/21/201118:03:40 17.9 2.7 6.8 

### Run 2 7/21/201118:04:00 17.9 2.7 6.8 

### Run 2 7/21/201118:04:20 17.9 2.7 6.8 

### Run 2 7/21/201118:04:40 17.8 2.7 6.8 

### Run 2 7/21/201118:05:00 17.9 2.7 6.8 

### Run2 7/21/201118:05:20 17.9 2.7 6.9 

### Run 2 7/21/201118:05:40 17.9 2.7 6.9 

### Run2 7/21/201118:06:00 17.9 2.7 6.9 

### Run2 7/21/201118:06:20 17.9 2.7 6.9 

### Run 2 7/21/201118:06:40 17.9 2.6 6.8 

### Run 2 7/21/201118:07:00 17.9 2.6 6.8 

### Run 2 7/21/201118:07:20 17.9 2.7 7.0 

### Run2 7/21/201118:07:40 17.9 2.7 6.9 

### Run 2 7/21/201118:08:00 17.9 2.6 6.9 

### Run 2 7/21/201118:08:20 17.9 2.6 7.0 

### Run 2 7/21/201118:08:40 17.9 2.6 6.9 

### Run 2 7/21/201118:09:00 17.9 2.7 6.9 

### Run 2 7/21/201118:09:20 17.9 2.7 7.0 

### Run2 7/21/201118:09:40 17.9 2.7 7.0 

### Run2 7/21/201118:10:00 17.9 2.6 6.8 

### In Stack 7/21/201118:10:20 17.9 2.7 6.7 

### In Stack 7/21/201118:10:40 17.9 2.7 6.8 

### In Stack 7/21/201118:11:00 17.9 2.7 6.7 

### In Stack 7/21/201118:11:20 17.9 2.7 6.5 

### In Stack 7/21/201118:11:40 17.9 2.7 6.6 

### In Stack 7/21/201118:12:00 17.9 2.7 6.7 

### In Stack 7/21/201118:12:20 17.9 2.7 6.6 

### In Stack 7/21/201118:12:40 17.9 2.7 6.6 

### In Stack 7/21/201118:13:00 17.9 2.7 6.5 

### In Stack 7/21/201118:13:20 8.9 1.3 6.3 

### In Stack 7/21/201118:13:40 0.2 0.2 5.4 7/21/201118:14:00 0.1 0.2 3.1 7/21/201118:14:20 0.1 0.1 1.3 

### Bias Drift Check 7/21/201118:14:40 0.1 0.1 0.9 

### Bias Drift Check 7/21/201118:15:00 0.1 0.1 0.7 

### Bias Drift Check 7/21/201118:15:20 0.1 0.1 0.7 

### Bias DriftCheck 7/21/201118:15:40 

### 0.1 0.1 0.8 N2 Zero Bias Drift Check 7/21/201118:16:00 0.1 0.1 0.8 

### Bias Drift Check 7/21/201118:16:20 0.1 0.1 0.8 

### Bias Drift Check 7/21/201118:16:40 0.0 0.1 0.6 

### Bias Drift Check
Page 

### 11 of 

### 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 

## .% CO2 •

## % S02. ppm Notes 7/21/201118:00:00 17.9 2.7 7.7 

### Run2 7/21/201118:00:20 17.9 2.7 7.7 

### Run2 7/21/201118:00:40 17.9 2.7 7.9 

### Run 2 7/21/201118:01:00 17.8 2.7 7.8 

### Run 2 7/21/201118:01:20 17.8 2.7 7.6 

### Run 2 7/21/201118:01:40 17.8 2.7 7.5 

### Run 2 7/21/201118:02:00 17.9 2.7 7.5 

### Run 2 7/21/201118:02:20 17.9 2.7 7.5 

### Run2 7/21/201118:02:40 17.9 2.7 7.2 

### Run2 7/21/201118:03:00 17.9 2.7 6.9 

### Run2 7/21/201118:03:20 17.8 2.7 6.8 

### Run 2 7/21/201118:03:40 17.9 2.7 6.8 

### Run 2 7/21/201118:04:00 17.9 2.7 6.8 

### Run 2 7/21/201118:04:20 17.9 2.7 6.8 

### Run 2 7/21/201118:04:40 17.8 2.7 6.8 

### Run 2 7/21/201118:05:00 17.9 2.7 6.8 

### Run2 7/21/201118:05:20 17.9 2.7 6.9 

### Run 2 7/21/201118:05:40 17.9 2.7 6.9 

### Run2 7/21/201118:06:00 17.9 2.7 6.9 

### Run2 7/21/201118:06:20 17.9 2.7 6.9 

### Run 2 7/21/201118:06:40 17.9 2.6 6.8 

### Run 2 7/21/201118:07:00 17.9 2.6 6.8 

### Run 2 7/21/201118:07:20 17.9 2.7 7.0 

### Run2 7/21/201118:07:40 17.9 2.7 6.9 

### Run 2 7/21/201118:08:00 17.9 2.6 6.9 

### Run 2 7/21/201118:08:20 17.9 2.6 7.0 

### Run 2 7/21/201118:08:40 17.9 2.6 6.9 

### Run 2 7/21/201118:09:00 17.9 2.7 6.9 

### Run 2 7/21/201118:09:20 17.9 2.7 7.0 

### Run2 7/21/201118:09:40 17.9 2.7 7.0 

### Run2 7/21/201118:10:00 17.9 2.6 6.8 

### In Stack 7/21/201118:10:20 17.9 2.7 6.7 

### In Stack 7/21/201118:10:40 17.9 2.7 6.8 

### In Stack 7/21/201118:11:00 17.9 2.7 6.7 

### In Stack 7/21/201118:11:20 17.9 2.7 6.5 

### In Stack 7/21/201118:11:40 17.9 2.7 6.6 

### In Stack 7/21/201118:12:00 17.9 2.7 6.7 

### In Stack 7/21/201118:12:20 17.9 2.7 6.6 

### In Stack 7/21/201118:12:40 17.9 2.7 6.6 

### In Stack 7/21/201118:13:00 17.9 2.7 6.5 

### In Stack 7/21/201118:13:20 8.9 1.3 6.3 

### In Stack 7/21/201118:13:40 0.2 0.2 5.4 7/21/201118:14:00 0.1 0.2 3.1 7/21/201118:14:20 0.1 0.1 1.3 

### Bias Drift Check 7/21/201118:14:40 0.1 0.1 0.9 

### Bias Drift Check 7/21/201118:15:00 0.1 0.1 0.7 

### Bias Drift Check 7/21/201118:15:20 0.1 0.1 0.7 

### Bias DriftCheck 7/21/201118:15:40 

### 0.1 0.1 0.8 N2 Zero Bias Drift Check 7/21/201118:16:00 0.1 0.1 0.8 

### Bias Drift Check 7/21/201118:16:20 0.1 0.1 0.8 

### Bias Drift Check 7/21/201118:16:40 0.0 0.1 0.6 

### Bias Drift Check
Page 

### 11 of 

### 18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 •

### % CO2 •

### % S02. ppm Notes 7/21/201118:17:00 3.2 3.3 0.4 Bias Drift Check 7/21/201118:17:20 8.9 8.8 0.2 Bias Drift Check 7/21/201118:17:40 8.9 8.9 -0.1 Bias Drift Check 7/21/201118:18:00 

### 8.9 9.0 -0.1 02 9.0/C02 9.0 Bias Drift Check 7/21/201118:18:20 10.5 7.8 -0.1 Bias Drift Check 7/21/201118:18:40 17.7 2.8 1.0 Bias Drift Check 7/21/201118:19:00 17.9 2.7 3.6 Bias Drift Check 7/21/201118:19:20 17.8 2.7 5.6 Bias Drift Check 7/21/201118:19:40 2.2 0.8 5.9 Bias Drift Check 7/21/201118:20:00 0.1 0.2 5.4 Bias Drift Check 7/21/201118:20:20 0.1 0.2 5.2 Bias Drift Check 7/21/201118:20:40 0.1 0.2 5.5 Bias Drift Check 7/21/201118:21:00 0.1 0.1 5.8 Bias Drift Check 7/21/201118:21:20 0.1 0.1 5.8 Bias Drift Check 7/21/201118:21:40 0.1 0.1 5.6 Bias Drift Check 7/21/201118:22:00 0.1 0.1 5.7 Bias Drift Check 7/21/201118:22:20 0.0 0.1 16.1 Bias Drift Check 7/21/201118:22:40 0.0 0.1 22.2 Bias Drift Check 7/21/201118:23:00 0.0 0.1 23.5 Bias Drift Check 7/21/201118:23:20 0.0 0.1 23.7 Bias Drift Check 7/21/201118:23:40 0.0 0.0 24.7 Bias Drift Check 7/21/201118:24:00 0.0 0.0 24.7 Bias Drift Check 7/21/201118:24:20 0.0 0.0 25.1 Bias Drift Check 7/21/201118:24:40 0.0 0.0 

### 25.8 S02 27.0 ppm Bias Drift Check 7/21/201118:25:00 0.0 0.0 26.3 Bias Drift Check 7/21/201118:25:20 0.0 0.0 26.3 7/21/201118:25:40 4.9 0.7 27.9 7/21/201118:26:00 17.7 2.4 22.6 In Stack 7/21/201118:26:20 18.0 2.4 10.8 In Stack 7/21/201118:26:40 18.0 2.4 8.8 In Stack 7/21/201118:27:00 18.0 2.4 8.2 In Stack 7/21/201118:27:20 18.0 2.5 7.7 In Stack 7/21/201118:27:40 18.0 2.5 7.7 In Stack 7/21/201118:28:00 18.0 2.5 7.7 In Stack 7/21/201118:28:20 18.0 2.5 7.3 In Stack 7/21/201118:28:40 18.0 2.5 7.3 In Stack 7/21/201118:29:00 18.0 2.5 7.2 In Stack 7/21/201118:29:20 18.0 2.5 7.2 In Stack 7/21/201118:29:40 18.0 2.5 7.1 In Stack 7/21/201118:30:00 17.9 2.5 7.1 In Stack 7/21/201118:30:20 17.9 2.5 7.0 In Stack 7/21/201118:30:40 18.0 2.5 7.1 In Stack 7/21/201118:31:00 17.9 2.5 7.1 In Stack 7/21/201118:31:20 17.9 2.5 7.1 In Stack 7/21/201118:31:40 17.9 2.5 7.3 In Stack 7/21/201118:32:00 17.9 2.5 7.4 In Stack 7/21/201118:32:20 17.9 2.5 7.3 In Stack 7/21/201118:32:40 17.9 2.5 7.4 In Stack 7/21/201118:33:00 17.9 2.5 7.6 In Stack 7/21/201118:33:20 17.9 2.5 7.6 In Stack 7/21/201118:33:40 17.9 2.5 7.5 In Stack
Page 12of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 •

### % CO2 •

### % S02. ppm Notes 7/21/201118:17:00 3.2 3.3 0.4 Bias Drift Check 7/21/201118:17:20 8.9 8.8 0.2 Bias Drift Check 7/21/201118:17:40 8.9 8.9 -0.1 Bias Drift Check 7/21/201118:18:00 

### 8.9 9.0 -0.1 02 9.0/C02 9.0 Bias Drift Check 7/21/201118:18:20 10.5 7.8 -0.1 Bias Drift Check 7/21/201118:18:40 17.7 2.8 1.0 Bias Drift Check 7/21/201118:19:00 17.9 2.7 3.6 Bias Drift Check 7/21/201118:19:20 17.8 2.7 5.6 Bias Drift Check 7/21/201118:19:40 2.2 0.8 5.9 Bias Drift Check 7/21/201118:20:00 0.1 0.2 5.4 Bias Drift Check 7/21/201118:20:20 0.1 0.2 5.2 Bias Drift Check 7/21/201118:20:40 0.1 0.2 5.5 Bias Drift Check 7/21/201118:21:00 0.1 0.1 5.8 Bias Drift Check 7/21/201118:21:20 0.1 0.1 5.8 Bias Drift Check 7/21/201118:21:40 0.1 0.1 5.6 Bias Drift Check 7/21/201118:22:00 0.1 0.1 5.7 Bias Drift Check 7/21/201118:22:20 0.0 0.1 16.1 Bias Drift Check 7/21/201118:22:40 0.0 0.1 22.2 Bias Drift Check 7/21/201118:23:00 0.0 0.1 23.5 Bias Drift Check 7/21/201118:23:20 0.0 0.1 23.7 Bias Drift Check 7/21/201118:23:40 0.0 0.0 24.7 Bias Drift Check 7/21/201118:24:00 0.0 0.0 24.7 Bias Drift Check 7/21/201118:24:20 0.0 0.0 25.1 Bias Drift Check 7/21/201118:24:40 0.0 0.0 

### 25.8 S02 27.0 ppm Bias Drift Check 7/21/201118:25:00 0.0 0.0 26.3 Bias Drift Check 7/21/201118:25:20 0.0 0.0 26.3 7/21/201118:25:40 4.9 0.7 27.9 7/21/201118:26:00 17.7 2.4 22.6 In Stack 7/21/201118:26:20 18.0 2.4 10.8 In Stack 7/21/201118:26:40 18.0 2.4 8.8 In Stack 7/21/201118:27:00 18.0 2.4 8.2 In Stack 7/21/201118:27:20 18.0 2.5 7.7 In Stack 7/21/201118:27:40 18.0 2.5 7.7 In Stack 7/21/201118:28:00 18.0 2.5 7.7 In Stack 7/21/201118:28:20 18.0 2.5 7.3 In Stack 7/21/201118:28:40 18.0 2.5 7.3 In Stack 7/21/201118:29:00 18.0 2.5 7.2 In Stack 7/21/201118:29:20 18.0 2.5 7.2 In Stack 7/21/201118:29:40 18.0 2.5 7.1 In Stack 7/21/201118:30:00 17.9 2.5 7.1 In Stack 7/21/201118:30:20 17.9 2.5 7.0 In Stack 7/21/201118:30:40 18.0 2.5 7.1 In Stack 7/21/201118:31:00 17.9 2.5 7.1 In Stack 7/21/201118:31:20 17.9 2.5 7.1 In Stack 7/21/201118:31:40 17.9 2.5 7.3 In Stack 7/21/201118:32:00 17.9 2.5 7.4 In Stack 7/21/201118:32:20 17.9 2.5 7.3 In Stack 7/21/201118:32:40 17.9 2.5 7.4 In Stack 7/21/201118:33:00 17.9 2.5 7.6 In Stack 7/21/201118:33:20 17.9 2.5 7.6 In Stack 7/21/201118:33:40 17.9 2.5 7.5 In Stack
Page 12of 18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia, Minnesota Furnace Stack D



### TIMESTAMP O2 , 

### % CO2 , 

## % S02, ppm Notes 7/21/201118:34:00 17.9 2.5 7.5 

### In Stack 7/21/201118:34:20 17.9 2.5 7.6 

### In Stack 7/21/201118:34:40 17.9 2.5 7.6 

### In Stack 7/21/201118:35:00 17.9 2.5 7.8 

### In Stack 7/21/201118:35:20 17.8 2.5 7.8 

### In Stack 7/21/201118:35:40 17.8 2.5 7.8 

### In Stack 7/21/201118:36:00 17.8 2.5 7.7 

### In Stack 7/21/201118:36:20 17.8 2.5 7.6 

### In Stack 7/21/201118:36:40 17.8 2.6 7.6 

### In Stack 7/21/201118:37:00 17.8 2.6 7.5 

### In Stack 7/21/201118:37:20 17.8 2.6 7.5 

### In Stack 7/21/201118:37:40 17.8 2.6 7.5 

### In Stack 7/21/201118:38:00 17.8 2.6 7.6 

### In Stack 7/21/201118:38:20 17.8 2.6 7.4 

### In Stack 7/21/201118:38:40 17.8 2.6 7.3 

### In Stack 7/21/201118:39:00 17.8 2.7 7.3 

### In Stack 7/21/201118:39:20 17.8 2.7 7.3 

### In Stack 7/21/201118:39:40 17.8 2.7 7.5 

### In Stack 7/21/201118:40:00 17.7 2.7 7.7 

### In Stack 7/21/201118:40:20 17.8 2.7 7.8 

### In Stack 7/21/201118:40:40 17.7 2.7 8.1 

### In Stack 7/21/201118:41:00 17.7 2.7 8.2 

### In Stack 7/21/201118:41:20 17.7 2.7 8.1 

### In Stack 7/21/201118:41:40 17.7 2.7 8.2 

### In Stack 7/21/201118:42:00 17.7 2.7 8.2 

### In Stack 7/21/201118:42:20 17.7 2.7 8.2 

### In Stack 7/21/201118:42:40 17.7 2.7 8.3 

### In Stack 7/21/201118:43:00 17.7 2.7 8.4 

### In Stack 7/21/201118:43:20 17.7 2.7 8.5 

### In Stack 7/21/201118:43:40 17.7 2.7 8.5 

### In Stack 7/21/201118:44:00 17.7 2.7 8.5 

### In Stack 7/21/201118:44:20 17.6 2.8 8.5 

### In Stack 7/21/201118:44:40 17.7 2.8 8.7 

### In Stack 7/21/201118:45:00 17.6 2.8 8.6 

### Run3 7/21/201118:45:20 17.6 2.8 8.5 

### Run3 7/21/201118:45:40 17.6 2.8 8.6 

### Run 3 7/21/201118:46:00 17.6 2.8 8.8 

### Run 3 7/21/201118:46:20 17.6 2.8 9.0 

### Run 3 7/21/201118:46:40 17.6 2.8 8.9 

### Run3 7/21/201118:47:00 17.6 2.8 9.0 

### Run3 7/21/201118:47:20 17.6 2.8 9.3 

### Run 3 7/21/201118:47:40 17.6 2.8 9.3 

### Run 3 7/21/201118:48:00 17.6 2.8 9.2 

### Run 3 7/21/201118:48:20 17.6 2.8 9.0 

### Run 3 7/21/201118:48:40 17.6 2.8 8.8 

### Run3 7/21/201118:49:00 17.6 2.8 8.9 

### Run 3 7/21/201118:49:20 17.6 2.8 9.0 

### Run 3 7/21/201118:49:40 17.6 2.8 9.1 

### Run 3 7/21/201118:50:00 17.6 2.8 9.3 

### Run 3 7/21/201118:50:20 17.6 2.8 9.6 

### Run 3 7/21/201118:50:40 17.6 2.7 9.9 

### Run 3
Page 13 of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia, Minnesota Furnace Stack D



### TIMESTAMP O2 , 

### % CO2 , 

## % S02, ppm Notes 7/21/201118:34:00 17.9 2.5 7.5 

### In Stack 7/21/201118:34:20 17.9 2.5 7.6 

### In Stack 7/21/201118:34:40 17.9 2.5 7.6 

### In Stack 7/21/201118:35:00 17.9 2.5 7.8 

### In Stack 7/21/201118:35:20 17.8 2.5 7.8 

### In Stack 7/21/201118:35:40 17.8 2.5 7.8 

### In Stack 7/21/201118:36:00 17.8 2.5 7.7 

### In Stack 7/21/201118:36:20 17.8 2.5 7.6 

### In Stack 7/21/201118:36:40 17.8 2.6 7.6 

### In Stack 7/21/201118:37:00 17.8 2.6 7.5 

### In Stack 7/21/201118:37:20 17.8 2.6 7.5 

### In Stack 7/21/201118:37:40 17.8 2.6 7.5 

### In Stack 7/21/201118:38:00 17.8 2.6 7.6 

### In Stack 7/21/201118:38:20 17.8 2.6 7.4 

### In Stack 7/21/201118:38:40 17.8 2.6 7.3 

### In Stack 7/21/201118:39:00 17.8 2.7 7.3 

### In Stack 7/21/201118:39:20 17.8 2.7 7.3 

### In Stack 7/21/201118:39:40 17.8 2.7 7.5 

### In Stack 7/21/201118:40:00 17.7 2.7 7.7 

### In Stack 7/21/201118:40:20 17.8 2.7 7.8 

### In Stack 7/21/201118:40:40 17.7 2.7 8.1 

### In Stack 7/21/201118:41:00 17.7 2.7 8.2 

### In Stack 7/21/201118:41:20 17.7 2.7 8.1 

### In Stack 7/21/201118:41:40 17.7 2.7 8.2 

### In Stack 7/21/201118:42:00 17.7 2.7 8.2 

### In Stack 7/21/201118:42:20 17.7 2.7 8.2 

### In Stack 7/21/201118:42:40 17.7 2.7 8.3 

### In Stack 7/21/201118:43:00 17.7 2.7 8.4 

### In Stack 7/21/201118:43:20 17.7 2.7 8.5 

### In Stack 7/21/201118:43:40 17.7 2.7 8.5 

### In Stack 7/21/201118:44:00 17.7 2.7 8.5 

### In Stack 7/21/201118:44:20 17.6 2.8 8.5 

### In Stack 7/21/201118:44:40 17.7 2.8 8.7 

### In Stack 7/21/201118:45:00 17.6 2.8 8.6 

### Run3 7/21/201118:45:20 17.6 2.8 8.5 

### Run3 7/21/201118:45:40 17.6 2.8 8.6 

### Run 3 7/21/201118:46:00 17.6 2.8 8.8 

### Run 3 7/21/201118:46:20 17.6 2.8 9.0 

### Run 3 7/21/201118:46:40 17.6 2.8 8.9 

### Run3 7/21/201118:47:00 17.6 2.8 9.0 

### Run3 7/21/201118:47:20 17.6 2.8 9.3 

### Run 3 7/21/201118:47:40 17.6 2.8 9.3 

### Run 3 7/21/201118:48:00 17.6 2.8 9.2 

### Run 3 7/21/201118:48:20 17.6 2.8 9.0 

### Run 3 7/21/201118:48:40 17.6 2.8 8.8 

### Run3 7/21/201118:49:00 17.6 2.8 8.9 

### Run 3 7/21/201118:49:20 17.6 2.8 9.0 

### Run 3 7/21/201118:49:40 17.6 2.8 9.1 

### Run 3 7/21/201118:50:00 17.6 2.8 9.3 

### Run 3 7/21/201118:50:20 17.6 2.8 9.6 

### Run 3 7/21/201118:50:40 17.6 2.7 9.9 

### Run 3
Page 13 of 18

### ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia, Minnesota FurnaceStack0

TIMESTAMP O2 , 

### % CO2, 

### % S02, 

### ppm Notes 7/21/201118:51:00 17.6 2.7 10.1 Run 3 

### 7/21/201118:51:20 17.6 2.7 10.2 Run3 

### 7/21/201118:51:40 17.6 2.7 10.5 Run 3 

### 7/21/201118:52:00 17.6 2.7 10.6 Run 3 

### 7/21/201118:52:20 17.6 2.7 10.5 Run 3 

### 7/21/201118:52:40 17.6 2.7 10.5 Run 3 

### 7/21/201118:53:00 17.6 2.7 10.6 Run 3 

### 7/21/201118:53:20 17.6 2.7 10.5 Run 3 

### 7/21/201118:53:40 17.6 2.7 10.4 Run 3 

### 7/21/201118:54:00 17.6 2.7 10.3 Run 3 

### 7/21/201118:54:20 17.6 2.7 10.3 Run 3 

### 7/21/201118:54:40 17.6 2.7 10.3 Run 3 

### 7/21/201118:55:00 17.6 2.7 10.3 Run 3 

### 7/21/201118:55:20 17.6 2.7 10.2 Run 3 

### 7/21/201118:55:40 17.6 2.7 10.1 Run 3 

### 7/21/201118:56:00 17.6 2.7 10.1 Run 3 

### 7/21/201118:56:20 17.6 2.7 10.1 Run 3 

### 7/21/201118:56:40 17.6 2.7 10.1 Run 3 

### 7/21/201118:57:00 17.6 2.8 10.1 Run 3 

### 7/21/201118:57:20 17.6 2.8 10.0 Run 3 

### 7/21/201118:57:40 17.6 2.8 10.0 Run 3 

### 7/21/201118:58:00 17.6 2.8 9.9 Run 3 

### 7/21/201118:58:20 17.6 2.8 9.9 Run 3 

### 7/21/201118:58:40 17.6 2.8 10.0 Run 3 

### 7/21/201118:59:00 17.6 2.8 10.1 Run 3 

### 7/21/201118:59:20 17.6 2.8 10.2 Run 3 

### 7/21/201118:59:40 17.6 2.7 10.4 Run 3 

### 7/21/201119:00:00 17.6 2.7 10.4 Run 3 

### 7/21/201119:00:20 17.6 2.8 10.4 Run 3 

### 7/21/201119:00:40 17.6 2.8 10.4 Run 3 

### 7/21/201119:01:00 17.6 2.8 10.6 Run 3 

### 7/21/201119:01:20 17.6 2.8 10.7 Run 3 

### 7/21/201119:01:40 17.6 2.8 10.6 Run3 

### 7/21/201119:02:00 17.6 2.8 10.5 Run 3 

### 7/21/201119:02:20 17.6 2.8 10.4 Run 3 

### 7/21/201119:02:40 17.6 2.8 10.3 Run 3 

### 7/21/201119:03:00 17.6 2.8 10.2 Run 3 

### 7/21/201119:03:20 17.6 2.7 10.2 Run 3 

### 7/21/201119:03:40 17.6 2.7 10.3 Run 3 

### 7/21/201119:04:00 17.7 2.7 10.4 Run 3 

### 7/21/201119:04:20 17.6 2.7 10.6 Run 3 

### 7/21/201119:04:40 17.7 2.7 10.6 Run 3 

### 7/21/201119:05:00 17.7 2.7 10.7 Run 3 

### 7/21/201119:05:20 17.7 2.7 10.9 Run 3 

### 7/21/201119:05:40 17.7 2.7 10.8 Run 3 

### 7/21/201119:06:00 17.7 2.7 10.7 Run 3 

### 7/21/201119:06:20 17.7 2.6 10.7 Run3 

### 7/21/201119:06:40 17.7 2.6 10.6 Run3 

### 7/21/201119:07:00 17.7 2.6 10.7 Run 3 

### 7/21/201119:07:20 17.7 2.6 10.7 Run 3 

### 7/21/201119:07:40 17.8 2.6 10.7 Run 3


### Page 14of18 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia, Minnesota FurnaceStack0

TIMESTAMP O2 , 

### % CO2, 

### % S02, 

### ppm Notes 7/21/201118:51:00 17.6 2.7 10.1 Run 3 

### 7/21/201118:51:20 17.6 2.7 10.2 Run3 

### 7/21/201118:51:40 17.6 2.7 10.5 Run 3 

### 7/21/201118:52:00 17.6 2.7 10.6 Run 3 

### 7/21/201118:52:20 17.6 2.7 10.5 Run 3 

### 7/21/201118:52:40 17.6 2.7 10.5 Run 3 

### 7/21/201118:53:00 17.6 2.7 10.6 Run 3 

### 7/21/201118:53:20 17.6 2.7 10.5 Run 3 

### 7/21/201118:53:40 17.6 2.7 10.4 Run 3 

### 7/21/201118:54:00 17.6 2.7 10.3 Run 3 

### 7/21/201118:54:20 17.6 2.7 10.3 Run 3 

### 7/21/201118:54:40 17.6 2.7 10.3 Run 3 

### 7/21/201118:55:00 17.6 2.7 10.3 Run 3 

### 7/21/201118:55:20 17.6 2.7 10.2 Run 3 

### 7/21/201118:55:40 17.6 2.7 10.1 Run 3 

### 7/21/201118:56:00 17.6 2.7 10.1 Run 3 

### 7/21/201118:56:20 17.6 2.7 10.1 Run 3 

### 7/21/201118:56:40 17.6 2.7 10.1 Run 3 

### 7/21/201118:57:00 17.6 2.8 10.1 Run 3 

### 7/21/201118:57:20 17.6 2.8 10.0 Run 3 

### 7/21/201118:57:40 17.6 2.8 10.0 Run 3 

### 7/21/201118:58:00 17.6 2.8 9.9 Run 3 

### 7/21/201118:58:20 17.6 2.8 9.9 Run 3 

### 7/21/201118:58:40 17.6 2.8 10.0 Run 3 

### 7/21/201118:59:00 17.6 2.8 10.1 Run 3 

### 7/21/201118:59:20 17.6 2.8 10.2 Run 3 

### 7/21/201118:59:40 17.6 2.7 10.4 Run 3 

### 7/21/201119:00:00 17.6 2.7 10.4 Run 3 

### 7/21/201119:00:20 17.6 2.8 10.4 Run 3 

### 7/21/201119:00:40 17.6 2.8 10.4 Run 3 

### 7/21/201119:01:00 17.6 2.8 10.6 Run 3 

### 7/21/201119:01:20 17.6 2.8 10.7 Run 3 

### 7/21/201119:01:40 17.6 2.8 10.6 Run3 

### 7/21/201119:02:00 17.6 2.8 10.5 Run 3 

### 7/21/201119:02:20 17.6 2.8 10.4 Run 3 

### 7/21/201119:02:40 17.6 2.8 10.3 Run 3 

### 7/21/201119:03:00 17.6 2.8 10.2 Run 3 

### 7/21/201119:03:20 17.6 2.7 10.2 Run 3 

### 7/21/201119:03:40 17.6 2.7 10.3 Run 3 

### 7/21/201119:04:00 17.7 2.7 10.4 Run 3 

### 7/21/201119:04:20 17.6 2.7 10.6 Run 3 

### 7/21/201119:04:40 17.7 2.7 10.6 Run 3 

### 7/21/201119:05:00 17.7 2.7 10.7 Run 3 

### 7/21/201119:05:20 17.7 2.7 10.9 Run 3 

### 7/21/201119:05:40 17.7 2.7 10.8 Run 3 

### 7/21/201119:06:00 17.7 2.7 10.7 Run 3 

### 7/21/201119:06:20 17.7 2.6 10.7 Run3 

### 7/21/201119:06:40 17.7 2.6 10.6 Run3 

### 7/21/201119:07:00 17.7 2.6 10.7 Run 3 

### 7/21/201119:07:20 17.7 2.6 10.7 Run 3 

### 7/21/201119:07:40 17.8 2.6 10.7 Run 3


### Page 14of18

### ArcelorMitlal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 •

### % CO2 •

### % S02. ppm 

### Notes 7/21/201119:08:00 17.8 2.5 10.6 

### Run3 7/21/201119:08:20 17.8 2.5 10.5 

### Run3 7/21/201119:08:40 17.8 2.5 10.4 

### Run 3 7/21/201119:09:00 17.8 2.5 10.3 

### Run3 7/21/201119:09:20 17.8 2.5 10.2 

### Run 3 7/21/201119:09:40 17.8 2.5 9.9 

### Run 3 7/21/201119:10:00 17.8 2.5 9.7 

### Run 3 7/21/201119:10:20 17.8 2.5 9.5 

### Run 3 7/21/201119:10:40 17.9 2.4 9.2 

### Run 3 7/21/201119:11:00 17.9 2.4 9.2 

### Run 3 7/21/201119:11:20 17.9 2.4 9.2 

### Run 3 7/21/201119:11:40 17.9 2.4 9.0 

### Run 3 7/21/201119:12:00 17.9 2.4 9.1 

### Run3 7/21/201119:12:20 17.9 2.4 9.0 

### Run3 7/21/201119:12:40 17.9 2.4 8.9 

### Run 3 7/21/201119:13:00 17.9 2.4 8.8 

### Run 3 7/21/201119:13:20 17.9 2.4 8.8 

### Run 3 7/21/201119:13:40 17.9 2.4 8.8 

### Run 3 7/21/201119:14:00 17.9 2.4 8.7 

### Run 3 7/21/201119:14:20 17.9 2.5 8.5 

### Run 3 7/21/201119:14:40 17.9 2.4 8.5 

### Run 3 7/21/201119:15:00 17.9 2.4 8.6 

### Run 3 7/21/201119:15:20 17.9 2.4 8.5 

### Run 3 7/21/201119:15:40 17.9 2.5 8.6 

### Run 3 7/21/201119:16:00 17.9 2.5 8.5 

### Run 3 7/21/201119:16:20 17.9 2.4 8.4 

### Run 3 7/21/201119:16:40 17.9 2.4 8.3 

### Run 3 7/21/201119:17:00 17.9 2.4 8.2 

### Run 3 7/21/201119:17:20 17.9 2.4 8.2 

### Run 3 7/21/201119:17:40 17.9 2.5 8.0 

### Run 3 7/21/201119:18:00 17.9 2.5 8.0 

### Run3 7/21/201119:18:20 17.9 2.4 8.1 

### Run 3 7/21/201119:18:40 17.9 2.5 7.9 

### Run 3 7/21/201119:19:00 17.9 2.5 7.8 

### Run 3 7/21/201119:19:20 17.9 2.5 7.9 

### Run 3 7/21/201119:19:40 17.9 2.5 8.2 

### Run 3 7/21/201119:20:00 17.9 2.5 8.3 

### Run 3 7/21/201119:20:20 17.9 2.5 8.3 

### Run3 7/21/201119:20:40 17.9 2.5 8.2 

### Run 3 7/21/201119:21:00 17.9 2.4 8.2 

### Run 3 7/21/201119:21:20 17.9 2.5 8.1 

### Run 3 7/21/201119:21:40 17.9 2.5 8.0 

### Run 3 7/21/201119:22:00 17.9 2.5 8.0 

### Run 3 7/21/201119:22:20 17.9 2.5 8.0 

### Run3 7/21/201119:22:40 17.9 2.5 7.9 

### Run3 7/21/201119:23:00 17.9 2.4 8.0 

### Run 3 7/21/201119:23:20 17.9 2.4 8.0 

### Run 3 7/21/201119:23:40 17.9 2.5 8.2 

### Run 3 7/21/201119:24:00 17.9 2.5 8.5 

### Run 3 7/21/201119:24:20 17.9 2.4 8.6 

### Run 3 7/21/201119:24:40 17.9 2.4 8.8 

### Run 3
Page 

### 15 of 

### 18 ArcelorMitlal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia. Minnesota Furnace Stack D



### TIMESTAMP O2 •

### % CO2 •

### % S02. ppm 

### Notes 7/21/201119:08:00 17.8 2.5 10.6 

### Run3 7/21/201119:08:20 17.8 2.5 10.5 

### Run3 7/21/201119:08:40 17.8 2.5 10.4 

### Run 3 7/21/201119:09:00 17.8 2.5 10.3 

### Run3 7/21/201119:09:20 17.8 2.5 10.2 

### Run 3 7/21/201119:09:40 17.8 2.5 9.9 

### Run 3 7/21/201119:10:00 17.8 2.5 9.7 

### Run 3 7/21/201119:10:20 17.8 2.5 9.5 

### Run 3 7/21/201119:10:40 17.9 2.4 9.2 

### Run 3 7/21/201119:11:00 17.9 2.4 9.2 

### Run 3 7/21/201119:11:20 17.9 2.4 9.2 

### Run 3 7/21/201119:11:40 17.9 2.4 9.0 

### Run 3 7/21/201119:12:00 17.9 2.4 9.1 

### Run3 7/21/201119:12:20 17.9 2.4 9.0 

### Run3 7/21/201119:12:40 17.9 2.4 8.9 

### Run 3 7/21/201119:13:00 17.9 2.4 8.8 

### Run 3 7/21/201119:13:20 17.9 2.4 8.8 

### Run 3 7/21/201119:13:40 17.9 2.4 8.8 

### Run 3 7/21/201119:14:00 17.9 2.4 8.7 

### Run 3 7/21/201119:14:20 17.9 2.5 8.5 

### Run 3 7/21/201119:14:40 17.9 2.4 8.5 

### Run 3 7/21/201119:15:00 17.9 2.4 8.6 

### Run 3 7/21/201119:15:20 17.9 2.4 8.5 

### Run 3 7/21/201119:15:40 17.9 2.5 8.6 

### Run 3 7/21/201119:16:00 17.9 2.5 8.5 

### Run 3 7/21/201119:16:20 17.9 2.4 8.4 

### Run 3 7/21/201119:16:40 17.9 2.4 8.3 

### Run 3 7/21/201119:17:00 17.9 2.4 8.2 

### Run 3 7/21/201119:17:20 17.9 2.4 8.2 

### Run 3 7/21/201119:17:40 17.9 2.5 8.0 

### Run 3 7/21/201119:18:00 17.9 2.5 8.0 

### Run3 7/21/201119:18:20 17.9 2.4 8.1 

### Run 3 7/21/201119:18:40 17.9 2.5 7.9 

### Run 3 7/21/201119:19:00 17.9 2.5 7.8 

### Run 3 7/21/201119:19:20 17.9 2.5 7.9 

### Run 3 7/21/201119:19:40 17.9 2.5 8.2 

### Run 3 7/21/201119:20:00 17.9 2.5 8.3 

### Run 3 7/21/201119:20:20 17.9 2.5 8.3 

### Run3 7/21/201119:20:40 17.9 2.5 8.2 

### Run 3 7/21/201119:21:00 17.9 2.4 8.2 

### Run 3 7/21/201119:21:20 17.9 2.5 8.1 

### Run 3 7/21/201119:21:40 17.9 2.5 8.0 

### Run 3 7/21/201119:22:00 17.9 2.5 8.0 

### Run 3 7/21/201119:22:20 17.9 2.5 8.0 

### Run3 7/21/201119:22:40 17.9 2.5 7.9 

### Run3 7/21/201119:23:00 17.9 2.4 8.0 

### Run 3 7/21/201119:23:20 17.9 2.4 8.0 

### Run 3 7/21/201119:23:40 17.9 2.5 8.2 

### Run 3 7/21/201119:24:00 17.9 2.5 8.5 

### Run 3 7/21/201119:24:20 17.9 2.4 8.6 

### Run 3 7/21/201119:24:40 17.9 2.4 8.8 

### Run 3
Page 

### 15 of 

### 18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia, Minnesota Furnace Stack D



### TIMESTAMP 

## O2, 

### % 

## CO2

### ,% 

## 502, 

### ppm Notes 

### 7/21/201119:25:00 17.9 2.5 8.8 Run 3 

### 7/21/201119:25:20 17.9 2.5 8.7 Run 3 

### 7/21/201119:25:40 17.9 2.5 8.5 Run 3 

### 7/21/201119:26:00 17.9 2.5 8.4 Run 3 

### 7/21/201119:26:20 17.9 2.5 8.4 Run 3 

### 7/21/201119:26:40 17.9 2.5 8.5 Run 3 

### 7/21/201119:27:00 17.9 2.5 8.5 Run 3 

### 7/21/201119:27:20 17.9 2.5 8.4 Run 3 

### 7/21/201119:27:40 17.9 2.5 8.4 Run 3 

### 7/21/201119:28:00 17.9 2.5 8.3 Run 3 

### 7/21/201119:28:20 17.8 2.5 8.3 Run 3 

### 7/21/201119:28:40 17.9 2.5 8.2 Run 3 

### 7/21/201119:29:00 17.9 2.5 8.2 Run 3 

### 7/21/201119:29:20 17.9 2.5 8.2 Run 3 

### 7/21/201119:29:40 17.9 2.5 8.2 Run 3 

### 7/21/201119:30:00 17.8 2.5 8.1 Run 3 

### 7/21/201119:30:20 17.9 2.5 8.1 Run 3 

### 7/21/201119:30:40 17.9 2.5 8.1 Run 3 

### 7/21/201119:31:00 17.9 2.4 8.1 Run3 

### 7/21/201119:31:20 17.9 2.4 8.0 Run 3 

### 7/21/201119:31:40 17.9 2.4 8.0 Run 3 

### 7/21/201119:32:00 17.9 2.4 8.0 Run 3 

### 7/21/201119:32:20 17.9 2.4 8.1 Run 3 

### 7/21/201119:32:40 17.9 2.4 8.3 Run3 

### 7/21/201119:33:00 17.9 2.4 8.3 Run 3 

### 7/21/201119:33:20 17.9 2.4 8.3 Run 3 

### 7/21/201119:33:40 17.9 2.4 8.3 Run 3 

### 7/21/201119:34:00 17.9 2.4 8.3 Run 3 

### 7/21/201119:34:20 18.0 2.4 8.2 Run 3 

### 7/21/201119:34:40 18.0 2.4 8.1 Run 3 

### 7/21/201119:35:00 17.9 2.4 8.0 Run 3 

### 7/21/201119:35:20 17.9 2.4 8.0 Run 3 

### 7/21/201119:35:40 18.0 2.4 8.1 Run 3 

### 7/21/201119:36:00 17.9 2.4 8.2 Run 3 

### 7/21/201119:36:20 18.0 2.4 8.3 Run 3 

### 7/21/201119:36:40 18.0 2.4 8.3 Run 3 

### 7/21/201119:37:00 18.0 2.4 8.2 Run 3 

### 7/21/201119:37:20 17.9 2.4 8.1 Run 3 

### 7/21/201119:37:40 18.0 2.4 8.0 Run 3 

### 7/21/201119:38:00 18.0 2.4 8.1 Run3 

### 7/21/201119:38:20 18.0 2.4 8.0 Run 3 

### 7/21/201119:38:40 17.9 2.4 7.9 Run 3 

### 7/21/201119:39:00 17.9 2.5 7.8 Run 3 

### 7/21/201119:39:20 17.9 2.5 7.7 Run 3 

### 7/21/201119:39:40 18.0 2.4 7.6 Run 3 

### 7/21/201119:40:00 18.0 2.4 7.4 Run3 

### 7/21/201119:40:20 18.0 2.4 7.2 Run 3 

### 7/21/201119:40:40 18.0 2.4 7.1 Run 3 

### 7/21/201119:41:00 18.0 2.4 7.0 Run 3 

### 7/21/201119:41:20 18.0 2.5 6.9 Run 3 

### 7/21/201119:41:40 17.9 2.5 6.8 Run 3
Page 16 of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 

### 7/21/11 9/10/2011 Virginia, Minnesota Furnace Stack D



### TIMESTAMP 

## O2, 

### % 

## CO2

### ,% 

## 502, 

### ppm Notes 

### 7/21/201119:25:00 17.9 2.5 8.8 Run 3 

### 7/21/201119:25:20 17.9 2.5 8.7 Run 3 

### 7/21/201119:25:40 17.9 2.5 8.5 Run 3 

### 7/21/201119:26:00 17.9 2.5 8.4 Run 3 

### 7/21/201119:26:20 17.9 2.5 8.4 Run 3 

### 7/21/201119:26:40 17.9 2.5 8.5 Run 3 

### 7/21/201119:27:00 17.9 2.5 8.5 Run 3 

### 7/21/201119:27:20 17.9 2.5 8.4 Run 3 

### 7/21/201119:27:40 17.9 2.5 8.4 Run 3 

### 7/21/201119:28:00 17.9 2.5 8.3 Run 3 

### 7/21/201119:28:20 17.8 2.5 8.3 Run 3 

### 7/21/201119:28:40 17.9 2.5 8.2 Run 3 

### 7/21/201119:29:00 17.9 2.5 8.2 Run 3 

### 7/21/201119:29:20 17.9 2.5 8.2 Run 3 

### 7/21/201119:29:40 17.9 2.5 8.2 Run 3 

### 7/21/201119:30:00 17.8 2.5 8.1 Run 3 

### 7/21/201119:30:20 17.9 2.5 8.1 Run 3 

### 7/21/201119:30:40 17.9 2.5 8.1 Run 3 

### 7/21/201119:31:00 17.9 2.4 8.1 Run3 

### 7/21/201119:31:20 17.9 2.4 8.0 Run 3 

### 7/21/201119:31:40 17.9 2.4 8.0 Run 3 

### 7/21/201119:32:00 17.9 2.4 8.0 Run 3 

### 7/21/201119:32:20 17.9 2.4 8.1 Run 3 

### 7/21/201119:32:40 17.9 2.4 8.3 Run3 

### 7/21/201119:33:00 17.9 2.4 8.3 Run 3 

### 7/21/201119:33:20 17.9 2.4 8.3 Run 3 

### 7/21/201119:33:40 17.9 2.4 8.3 Run 3 

### 7/21/201119:34:00 17.9 2.4 8.3 Run 3 

### 7/21/201119:34:20 18.0 2.4 8.2 Run 3 

### 7/21/201119:34:40 18.0 2.4 8.1 Run 3 

### 7/21/201119:35:00 17.9 2.4 8.0 Run 3 

### 7/21/201119:35:20 17.9 2.4 8.0 Run 3 

### 7/21/201119:35:40 18.0 2.4 8.1 Run 3 

### 7/21/201119:36:00 17.9 2.4 8.2 Run 3 

### 7/21/201119:36:20 18.0 2.4 8.3 Run 3 

### 7/21/201119:36:40 18.0 2.4 8.3 Run 3 

### 7/21/201119:37:00 18.0 2.4 8.2 Run 3 

### 7/21/201119:37:20 17.9 2.4 8.1 Run 3 

### 7/21/201119:37:40 18.0 2.4 8.0 Run 3 

### 7/21/201119:38:00 18.0 2.4 8.1 Run3 

### 7/21/201119:38:20 18.0 2.4 8.0 Run 3 

### 7/21/201119:38:40 17.9 2.4 7.9 Run 3 

### 7/21/201119:39:00 17.9 2.5 7.8 Run 3 

### 7/21/201119:39:20 17.9 2.5 7.7 Run 3 

### 7/21/201119:39:40 18.0 2.4 7.6 Run 3 

### 7/21/201119:40:00 18.0 2.4 7.4 Run3 

### 7/21/201119:40:20 18.0 2.4 7.2 Run 3 

### 7/21/201119:40:40 18.0 2.4 7.1 Run 3 

### 7/21/201119:41:00 18.0 2.4 7.0 Run 3 

### 7/21/201119:41:20 18.0 2.5 6.9 Run 3 

### 7/21/201119:41:40 17.9 2.5 6.8 Run 3
Page 16 of 18

### ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia. Minnesota FumaceStackD

TIMESTAMP O2 •

### % CO2 •

### % S02. 

### ppm Notes 

### 7/21/201119:42:00 17.9 2.5 6.8 Run 3 

### 7/21/201119:42:20 17.9 2.5 6.9 Run 3 

### 7/21/201119:42:40 17.9 2.5 6.9 Run 3 

### 7/21/201119:43:00 17.9 2.5 6.8 Run 3 

### 7/21/201119:43:20 18.0 2.4 6.8 Run 3 

### 7/21/201119:43:40 17.9 2.4 6.7 Run 3 

### 7/21/201119:44:00 17.9 2.4 6.9 Run 3 

### 7/21/201119:44:20 17.9 2.4 7.3 Run 3 

### 7/21/201119:44:40 17.9 2.4 7.5 Run 3 

### 7/21/201119:45:00 17.9 2.4 7.8 Run 3 

### 7/21/201119:45:20 18.0 2.4 8.1 Run 3 

### 7/21/201119:45:40 17.9 2.4 8.3 Run 3 

### 7/21/201119:46:00 17.9 2.4 8.5 Run 3 

### 7/21/201119:46:20 17.9 2.4 8.7 Run 3 

### 7/21/201119:46:40 17.9 2.4 8.9 Run 3 

### 7/21/201119:47:00 17.9 2.4 8.8 Run 3 

### 7/21/201119:47:20 17.9 2.4 8.7 Run 3 

### 7/21/201119:47:40 17.9 2.4 8.7 Run 3 

### 7/21/201119:48:00 17.9 2.5 8.6 In Stack 

### 7/21/201119:48:20 17.9 2.5 8.6 In Stack 

### 7/21/201119:48:40 17.9 2.5 8.5 In Stack 

### 7/21/201119:49:00 17.9 2.5 8.4 In Stack 

### 7/21/201119:49:20 17.8 2.5 8.5 In Stack 

### 7/21/201119:49:40 17.8 2.5 8.5 In Stack 

### 7/21/201119:50:00 17.8 2.5 8.4 In Stack 

### 7/21/201119:50:20 17.8 2.5 8.3 In Stack 

### 7/21/201119:50:40 17.8 2.5 8.2 In Stack 

### 7/21/201119:51:00 17.8 2.5 8.3 In Stack 

### 7/21/201119:51:20 17.8 2.5 8.5 In Stack 

### 7/21/201119:51:40 17.8 2.6 8.4 In Stack 

### 7/21/201119:52:00 17.8 2.6 8.4 In Stack 

### 7/21/201119:52:20 17.8 2.6 8.7 System Bias Check 

### 7/21/201119:52:40 17.8 2.6 8.8 System Bias Check 

### 7/21/201119:53:00 3.5 0.5 9.3 System Bias Check 

### 7/21/201119:53:20 0.1 0.1 9.7 System Bias Check 

### 7/21/201119:53:40 0.1 0.0 6.4 System Bias Check 

### 7/21/201119:54:00 0.1 0.0 2.5 System Bias Check 

### 7/21/201119:54:20 0.1 0.0 1.6 System Bias Check 

### 7/21/201119:54:40 0.1 0.0 1.2 System Bias Check 

### 7/21/201119:55:00 0.1 0.0 1.1 System Bias Check 

### 7/21/201119:55:20 0.1 0.0 1.0 System Bias Check 

### 7/21/201119:55:40 0.1 0.0 0.9 System Bias Check 

### 7/21/201119:56:00 

### 0.0 0.0 0.9 N2 Zero System Bias Check 

### 7/21/201119:56:20 0.0 0.0 0.9 System Bias Check 

### 7/21/201119:56:40 1.9 0.3 0.9 System Bias Check 

### 7/21/201119:57:00 7.5 7.3 1.1 System Bias Check 

### 7/21/201119:57:20 8.9 8.7 0.6 System Bias Check 

### 7/21/201119:57:40 8.9 8.9 0.0 System Bias Check 

### 7/21/201119:58:00 8.9 8.9 -0.1 System Bias Check 

### 7/21/201119:58:20 

### 8.9 8.9 -0.1 02 9.0/C029.0 System Bias Check 

### 7/21/201119:58:40 6.0 5.8 -0.1 System Bias Check


### Page 17 of18 ArcelorMittal Data LoggerOutput BarrEngineering Minorca Mine TestDate: 7/21/11 9/10/2011 

### Virginia. Minnesota FumaceStackD

TIMESTAMP O2 •

### % CO2 •

### % S02. 

### ppm Notes 

### 7/21/201119:42:00 17.9 2.5 6.8 Run 3 

### 7/21/201119:42:20 17.9 2.5 6.9 Run 3 

### 7/21/201119:42:40 17.9 2.5 6.9 Run 3 

### 7/21/201119:43:00 17.9 2.5 6.8 Run 3 

### 7/21/201119:43:20 18.0 2.4 6.8 Run 3 

### 7/21/201119:43:40 17.9 2.4 6.7 Run 3 

### 7/21/201119:44:00 17.9 2.4 6.9 Run 3 

### 7/21/201119:44:20 17.9 2.4 7.3 Run 3 

### 7/21/201119:44:40 17.9 2.4 7.5 Run 3 

### 7/21/201119:45:00 17.9 2.4 7.8 Run 3 

### 7/21/201119:45:20 18.0 2.4 8.1 Run 3 

### 7/21/201119:45:40 17.9 2.4 8.3 Run 3 

### 7/21/201119:46:00 17.9 2.4 8.5 Run 3 

### 7/21/201119:46:20 17.9 2.4 8.7 Run 3 

### 7/21/201119:46:40 17.9 2.4 8.9 Run 3 

### 7/21/201119:47:00 17.9 2.4 8.8 Run 3 

### 7/21/201119:47:20 17.9 2.4 8.7 Run 3 

### 7/21/201119:47:40 17.9 2.4 8.7 Run 3 

### 7/21/201119:48:00 17.9 2.5 8.6 In Stack 

### 7/21/201119:48:20 17.9 2.5 8.6 In Stack 

### 7/21/201119:48:40 17.9 2.5 8.5 In Stack 

### 7/21/201119:49:00 17.9 2.5 8.4 In Stack 

### 7/21/201119:49:20 17.8 2.5 8.5 In Stack 

### 7/21/201119:49:40 17.8 2.5 8.5 In Stack 

### 7/21/201119:50:00 17.8 2.5 8.4 In Stack 

### 7/21/201119:50:20 17.8 2.5 8.3 In Stack 

### 7/21/201119:50:40 17.8 2.5 8.2 In Stack 

### 7/21/201119:51:00 17.8 2.5 8.3 In Stack 

### 7/21/201119:51:20 17.8 2.5 8.5 In Stack 

### 7/21/201119:51:40 17.8 2.6 8.4 In Stack 

### 7/21/201119:52:00 17.8 2.6 8.4 In Stack 

### 7/21/201119:52:20 17.8 2.6 8.7 System Bias Check 

### 7/21/201119:52:40 17.8 2.6 8.8 System Bias Check 

### 7/21/201119:53:00 3.5 0.5 9.3 System Bias Check 

### 7/21/201119:53:20 0.1 0.1 9.7 System Bias Check 

### 7/21/201119:53:40 0.1 0.0 6.4 System Bias Check 

### 7/21/201119:54:00 0.1 0.0 2.5 System Bias Check 

### 7/21/201119:54:20 0.1 0.0 1.6 System Bias Check 

### 7/21/201119:54:40 0.1 0.0 1.2 System Bias Check 

### 7/21/201119:55:00 0.1 0.0 1.1 System Bias Check 

### 7/21/201119:55:20 0.1 0.0 1.0 System Bias Check 

### 7/21/201119:55:40 0.1 0.0 0.9 System Bias Check 

### 7/21/201119:56:00 

### 0.0 0.0 0.9 N2 Zero System Bias Check 

### 7/21/201119:56:20 0.0 0.0 0.9 System Bias Check 

### 7/21/201119:56:40 1.9 0.3 0.9 System Bias Check 

### 7/21/201119:57:00 7.5 7.3 1.1 System Bias Check 

### 7/21/201119:57:20 8.9 8.7 0.6 System Bias Check 

### 7/21/201119:57:40 8.9 8.9 0.0 System Bias Check 

### 7/21/201119:58:00 8.9 8.9 -0.1 System Bias Check 

### 7/21/201119:58:20 

### 8.9 8.9 -0.1 02 9.0/C029.0 System Bias Check 

### 7/21/201119:58:40 6.0 5.8 -0.1 System Bias Check


### Page 17 of18

### ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/21/11 9/10/2011 

### Virginia, Minnesota Furnace Stack D



### TIMESTAMP 

# ° 2



### ,% CO2, 

### % S02, ppm Notes 

### 7/21/201119:59:00 0.1 0.3 0.4 System Bias Check 

### 7/21/201119:59:20 0.1 0.1 2.1 System Bias Check 

### 7/21/201119:59:40 0.1 0.1 4.0 System Bias Check 

### 7/21/201120:00:00 0.1 0.1 4.9 System Bias Check 

### 7/21/201120:00:20 0.1 0.1 5.1 System Bias Check 

### 7/21/201120:00:40 0.1 0.1 5.2 System Bias Check 

### 7/21/201120:01:00 0.1 0.0 5.3 System Bias Check 

### 7/21/201120:01:20 0.1 0.0 5.3 System Bias Check 

### 7/21/201120:01:40 0.1 0.0 5.2 System Bias Check 

### 7/21/201120:02:00 0.1 0.0 5.2 System Bias Check 

### 7/21/201120:02:20 0.1 0.0 5.5 System Bias Check 

### 7/21/201120:02:40 0.0 0.0 17.9 System Bias Check 

### 7/21/201120:03:00 0.0 0.0 23.0 System Bias Check 

### 7/21/201120:03:20 0.0 0.0 24.2 System Bias Check 

### 7/21/201120:03:40 0.0 0.0 25.4 System Bias Check 

### 7/21/201120:04:00 0.0 0.0 25.5 System Bias Check 

### 7/21/201120:04:20 0.0 0.0 25.9 S0227.0 ppm System Bias Check 

### 7/21/201120:04:40 8.6 1.4 29.0 System Bias Check 

### 7/21/201120:05:00 17.6 2.7 19.0 System Bias Check

Page 18 of 18 ArcelorMittal Data LoggerOutput Barr Engineering Minorca Mine Test Date: 7/21/11 9/10/2011 

### Virginia, Minnesota Furnace Stack D



### TIMESTAMP 

# ° 2



### ,% CO2, 

### % S02, ppm Notes 

### 7/21/201119:59:00 0.1 0.3 0.4 System Bias Check 

### 7/21/201119:59:20 0.1 0.1 2.1 System Bias Check 

### 7/21/201119:59:40 0.1 0.1 4.0 System Bias Check 

### 7/21/201120:00:00 0.1 0.1 4.9 System Bias Check 

### 7/21/201120:00:20 0.1 0.1 5.1 System Bias Check 

### 7/21/201120:00:40 0.1 0.1 5.2 System Bias Check 

### 7/21/201120:01:00 0.1 0.0 5.3 System Bias Check 

### 7/21/201120:01:20 0.1 0.0 5.3 System Bias Check 

### 7/21/201120:01:40 0.1 0.0 5.2 System Bias Check 

### 7/21/201120:02:00 0.1 0.0 5.2 System Bias Check 

### 7/21/201120:02:20 0.1 0.0 5.5 System Bias Check 

### 7/21/201120:02:40 0.0 0.0 17.9 System Bias Check 

### 7/21/201120:03:00 0.0 0.0 23.0 System Bias Check 

### 7/21/201120:03:20 0.0 0.0 24.2 System Bias Check 

### 7/21/201120:03:40 0.0 0.0 25.4 System Bias Check 

### 7/21/201120:04:00 0.0 0.0 25.5 System Bias Check 

### 7/21/201120:04:20 0.0 0.0 25.9 S0227.0 ppm System Bias Check 

### 7/21/201120:04:40 8.6 1.4 29.0 System Bias Check 

### 7/21/201120:05:00 17.6 2.7 19.0 System Bias Check

Page 18 of 18

# Appendix D

Calibration Data

### EPA METHOD 3A 

# BARR ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace StackA 

### 7/19/2011**----=T:7A~KI~M**

### JN/GZ
Analyzer ModellSN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (Oxygen)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TESTRUN2 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan) x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### I Span) x 100 Drift, Percent of

span 0.00% 0.00%

0.00% 0.00%

0.00% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

19.4

19.4

19.4


### 02 Bias Corrected Average, 02%

19.6

19.7

19.7 

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace StackA 

### 7/19/2011 TAKIM

### JN/GZ
Analyzer ModellSN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9

SYSTEM CALIBRATION BIAS AND DRIFT DATA: (Oxygen)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TESTRUN2 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### I Span) x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### I Span) x 100 Drift, Percent of

span 0.00% 0.00%

0.00% 0.00%

0.00% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

19.4

19.4

19.4


### 02 Bias Corrected Average, 02%

19.6

19.7

19.7

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace StackA



### __**--=:-:-7~/1~9/2011** 

### TAKIM

### JN/GZ
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen

Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.1 0.1 1.11%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.1 1.11% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% TEST RUN 2 Zero Gas 0.0 0.1 1.11% 0.0 0.00% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% System Calibration Bias

# = [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 1.11% 0.00%

-1.11% 0.00%

0.00% 0.00% CertifiedValue 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

1.2

1.3

1.3


### C02 Bias Corrected

Value, C02%

1.2

1.2

1.3 

### EPA METHOD 3A 

# BARR ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace StackA



### __**---=,....;.7.;..,;/1~9/2011** 

### TAKIM

### JN/GZ
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen

Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.1 0.1 1.11%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.1 1.11% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% TEST RUN 2 Zero Gas 0.0 0.1 1.11% 0.0 0.00% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% System Calibration Bias

# = [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 1.11% 0.00%

-1.11% 0.00%

0.00% 0.00% CertifiedValue 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

1.2

1.3

1.3


### C02 Bias Corrected

Value, C02%

1.2

1.2

1.3

### EPA METHOD 3A 

# BARR ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack B 7/20/2011 TAKIMJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9

SYSTEM CALIBRATION BIAS AND DRIFT DATA: (Oxygen)

GYJinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response,**Re~ponse,** Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 2 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias 

### = [(System Cal. Response

- Analyzer Cal. Response) 

### I Span] x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span 0.00% 0.00%

0.00% 0.00%

0.00% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

19.0

18.9

19.0


### 02 Bias Corrected Average, 02%

19.2

19.1

19.3 

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack B 7/20/2011 

### ----=T:7 A

-:':KIMJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 9.0 

### High Gas 21.9

SYSTEM CALIBRATION BIAS AND DRIFT DATA: (Oxygen)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 

### High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response,**Re~ponse,** Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 2 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias 

### = [(System Cal. Response

- Analyzer Cal. Response) 

### I Span] x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span 0.00% 0.00%

0.00% 0.00%

0.00% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

19.0

18.9

19.0


### 02 Bias Corrected Average, 02%

19.2

19.1

19.3

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack B



### ___ -::7:.;;;/2;.;:.:.0/2011 TAKIMJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.1 0.1 1.11%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.2 2.22% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% TEST RUN 2 Zero Gas 0.0 0.2 2.22% 0.2 2.22% Upscale Gas 9.1 9.0 -1.11% 8.9 -2.22% TEST RUN 3 Zero Gas 0.0 0.2 2.22% 0.1 1.11% Upscale Gas 9.1 8.9 -2.22% 8.8 -3.33% System Calibration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift 

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 2.22% 0.00%

0.00% -1.11%

-1.11% -1.11% Certified Value 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

1.8

1.7

1.7


### C02 Bias Corrected

Value, C02%

1.7

1.6

1.6 

### EPA METHOD 3A 

# BARR ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack B 

### 7/20/2011 ---"""""'T'""A"';"'K/MJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.1 0.1 1.11%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.2 2.22% Upscale Gas 9.1 9.0 -1.11% 9.0 -1.11% TEST RUN 2 Zero Gas 0.0 0.2 2.22% 0.2 2.22% Upscale Gas 9.1 9.0 -1.11% 8.9 -2.22% TEST RUN 3 Zero Gas 0.0 0.2 2.22% 0.1 1.11% Upscale Gas 9.1 8.9 -2.22% 8.8 -3.33% System Calibration Bias

### = [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift 

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 2.22% 0.00%

0.00% -1.11%

-1.11% -1.11% Certified Value 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

1.8

1.7

1.7


### C02 Bias Corrected

Value, C02%

1.7

1.6

1.6

### EPA METHOD 3A 

# BARR ANALYZER CALIBRATION AND BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack C 

### 7/20-21/11 

### ---"':::T:7 A

7:-K/MJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be lessthan 

### +1- 2 percent ofspan 

### 7/20/2011 Cylinder Test Runs: 

## 1 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9


### 7/21/2011 Cylinder Test Runs 2-3 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9

SYSTEM CALIBRATION BIASAND DRIFT DATA: 

### (Oxygen)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TESTRUN2 Zero Gas 0.0 

### 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 

### 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00%**U~scale** Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift 

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percentof

span 0.00% 0.00%

0.00% 0.00%

0.00% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

18.1

18.2

18.1


### 02 Bias Corrected Average, 02%

18.3

18.4

18.3 

### EPA METHOD 3A ANALYZER CALIBRATION AND BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack C 

### 7/20-21/11 TAKIMJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be lessthan 

### +1- 2 percent ofspan 

### 7/20/2011 Cylinder Test Runs: 

## 1 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9


### 7/21/2011 Cylinder Test Runs 2-3 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9

SYSTEM CALIBRATION BIASAND DRIFT DATA: 

### (Oxygen)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TESTRUN2 Zero Gas 0.0 

### 0.0 0.00% 0.0 0.00% UQscale Gas 9.0 

### 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift 

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percentof

span 0.00% 0.00%

0.00% 0.00%

0.00% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

18.1

18.2

18.1


### 02 Bias Corrected Average, 02%

18.3

18.4

18.3

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack C 7/20-21/11 

### TAKIMJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be lessthan 

### +1- 2 percent ofspan 7/20/2011 

### Cylinder Test Runs: 

## 1 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

7/21/2011 

### Cylinder Test Runs 2-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.1 0.1 1.11%

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.0 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.1 1.11% 0.0 0.00% Upscale Gas 9.1 

### 9.0 -1.11% 9.0 -1.11% TEST RUN 2 Zero Gas 0.0 0.0 0.00% 0.1 1.11% Upscale Gas 9.0 

### 8.9 -1.11% 9.0 0.00% TEST RUN 3 Zero Gas 0.0 0.1 1.11% 0.1 1.11% Upscale Gas 9.0 9.0 0.00% 9.0 0.00% System Calibration Bias

# = [(System Cal. Response

- Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### = [(Final System Cal. Response

- Initial System Cal Response) 

### 1Span] x 100 Drift, Percent of span -1.11% 0.00%

1.11% 1.11%

0.00% 0.00% Certified Value 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

2.2

2.3

2.4


### C02 Bias Corrected

Value, C02%

2.2

2.3

2.3 

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack C



### ___**..:,;7/~20~-21/11** 

### TAKIMJN
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be lessthan 

### +1- 2 percent ofspan 

### 7/20/2011 Cylinder Test Runs: 

## 1 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0


### 7/21/2011 Cylinder Test Runs 2-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.1 0.1 1.11%

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.0 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.1 1.11% 0.0 0.00% Upscale Gas 9.1 

### 9.0 -1.11% 9.0 -1.11% TEST RUN 2 Zero Gas 0.0 0.0 0.00% 0.1 1.11% Upscale Gas 9.0 

### 8.9 -1.11% 9.0 0.00% TEST RUN 3 Zero Gas 0.0 0.1 1.11% 0.1 1.11% Upscale Gas 9.0 9.0 0.00% 9.0 0.00% System Calibration Bias

# = [(System Cal. Response

- Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### = [(Final System Cal. Response

- Initial System Cal Response) 

### 1Span] x 100 Drift, Percent of span -1.11% 0.00%

1.11% 1.11%

0.00% 0.00% Certified Value 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

2.2

2.3

2.4


### C02 Bias Corrected

Value, C02%

2.2

2.3

2.3

### EPA METHOD 3A ANALYZER CALIBRATION AND BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMitlal Furnace Stack D



### ___ ....;.7.;..;;;/2=1/2011 TAK
Analyzer Modell SN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9

SYSTEM CALIBRATION BIASAND DRIFT DATA: (Oxygen)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 2 Zero Gas 0.0 0.0 0.00% 0.1 0.46% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.1 0.46% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 0.00% 0.00%

0.46% 0.00%

-0.46% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

17.6

17.7

17.8



### 02 Bias Corrected Average, 02%

17.8

18.0

18.1 

### EPA METHOD 3A ANALYZER CALIBRATION AND BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMitlal Furnace Stack D



### ___ ...:..7;.::/2,,;.:1/2011 TAK
Analyzer Modell SN Analyzer Range (span) Servomex 1440 21.9 %

ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 9.0 High Gas 21.9

SYSTEM CALIBRATION BIASAND DRIFT DATA: (Oxygen)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC111833 High Gas CC105471

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 9.0 0.0 0.00% 21.9 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 2 Zero Gas 0.0 0.0 0.00% 0.1 0.46% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% TEST RUN 3 Zero Gas 0.0 0.1 0.46% 0.0 0.00% Upscale Gas 9.0 8.9 -0.46% 8.9 -0.46% System Calibration Bias 

### = [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift

### = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 0.00% 0.00%

0.46% 0.00%

-0.46% 0.00% Certified Value 0.0 9.0 21.9

Measured Run Average, Raw 02%

17.6

17.7

17.8



### 02 Bias Corrected Average, 02%

17.8

18.0

18.1

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack D 

### 7/21/2011

TAK
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be lessthan 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.0 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.1 1.11% 0.1 1.11% Upscale Gas 9.0 9.0 0.00% 9.0 0.00% TEST RUN2 Zero Gas 0.0 0.1 1.11% 0.1 1.11% Upscale Gas 9.0 9.0 0.00% 9.0 0.00% TEST RUN 3 Zero Gas 0.0 0.1 1.11% 0.0 0.00% Upscale Gas 9.0 9.0 0.00% 8.9 -1.11% System Calibration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift = [(Final System Cal. Response

- Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span 0.00% 0.00%

0.00% 0.00%

-1.11% -1.11% Certified Value 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

2.9

2.8

2.6


### C02 Bias Corrected

Value, C02%

2.8

2.8

2.5 

### EPA METHOD 3A ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack D 

### 7/21/2011

TAK
Analyzer ModellSN Analyzer Range (span) Servomex 1440 9.0 %

ANALYZER CALIBRATION DATA Note: Difference must be lessthan 

### +1- 2 percent ofspan Cylinder Test Runs: 1-3 Value

Zero Gas 0.0 Mid Gas 5.5 High Gas 9.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (C02)

Cylinder Serial No. Zero Gas Nitrogen Mid Gas CC105471 High Gas CC111833

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 5.5 0.0 0.00% 9.0 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.1 1.11% 0.1 1.11% Upscale Gas 9.0 9.0 0.00% 9.0 0.00% TEST RUN2 Zero Gas 0.0 0.1 1.11% 0.1 1.11% Upscale Gas 9.0 9.0 0.00% 9.0 0.00% TEST RUN 3 Zero Gas 0.0 0.1 1.11% 0.0 0.00% Upscale Gas 9.0 9.0 0.00% 8.9 -1.11% System Calibration Bias = [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift = [(Final System Cal. Response

- Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span 0.00% 0.00%

0.00% 0.00%

-1.11% -1.11% Certified Value 0.0 5.5 9.0

Measured Run

Value, Raw

C02%

2.9

2.8

2.6


### C02 Bias Corrected

Value, C02%

2.8

2.8

2.5

# BARR

ArcelorMittal Project Sample Loc. Date Operators Furnace Stack D

Analyzer ModellSN Analyzer Range (span) 

### 7/21/2011 TAK

ANALYZER CALIBRATION DATA 50.2 Bovar921 ppm

Note: Difference must be lessthan 

### +1- 2 percent ofspan Cylinder Test Runs _1

__ -_3_ Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2

SYSTEM CALIBRATION BIASAND DRIFT DATA: 

### EPA METHOD 6C ANALYZER CALIBRATION (502)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 High-gas CC684

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.5 0.5 1.00% 27.3 0.3 0.54% 50.1 0.1 0.20%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.5 0.3 -0.40% 0.9 0.80% Upscale Gas 27.3 25.5 -3.59% 25.6 -3.39% TEST RUN 2 Zero Gas 0.5 0.9 0.80% 0.8 0.60% Upscale Gas 27.3 25.6 -3.39% 25.8 -2.99% TEST RUN 3 Zero Gas 0.0 0.8 1.59% 0.9 1.79% Upscale Gas 27.3 25.8 -2.99% 25.9 -2.79% System Calibration Bias

# = [(System Cal. Response

- AnalyzerCal. Response) 

### I Span] x 100 Drift

# = [(Final System Cal. Response -Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 1.20% 0.20%

-0.20% 0.40%

0.20% 0.20% Certified Value 0.0 27.0 50.2

Bias Measured Run Corrected Averge, Raw Value, ppm

S02ppm S02

4.9 4.6

7.0 6.7

8.9 8.7



### 502 ArcelorMittal Project Sample Loc. Date Operators Furnace Stack D



### ___ ....;.7.;.;;/2=1/2011 TAK
Analyzer ModellSN Analyzer Range (span)

ANALYZER CALIBRATION DATA 50.2 Bovar921 ppm

Note: Difference must be lessthan 

### +1- 2 percent ofspan Cylinder Test Runs _1

__ -_3_ Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2

SYSTEM CALIBRATION BIASAND DRIFT DATA: 

### EPA METHOD 6C ANALYZER CALIBRATION (502)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 High-gas CC684

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.5 0.5 1.00% 27.3 0.3 0.54% 50.1 0.1 0.20%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.5 0.3 -0.40% 0.9 0.80% Upscale Gas 27.3 25.5 -3.59% 25.6 -3.39% TEST RUN 2 Zero Gas 0.5 0.9 0.80% 0.8 0.60% Upscale Gas 27.3 25.6 -3.39% 25.8 -2.99% TEST RUN 3 Zero Gas 0.0 0.8 1.59% 0.9 1.79% Upscale Gas 27.3 25.8 -2.99% 25.9 -2.79% System Calibration Bias

# = [(System Cal. Response

- AnalyzerCal. Response) 

### I Span] x 100 Drift

# = [(Final System Cal. Response -Initial System Cal Response) 

### ISpan] x 100 Drift, Percent of

span 1.20% 0.20%

-0.20% 0.40%

0.20% 0.20% Certified Value 0.0 27.0 50.2

Bias Measured Run Corrected Averge, Raw Value, ppm

S02ppm S02

4.9 4.6

7.0 6.7

8.9 8.7


### 502

# BARR

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack C 7/20-21/11 

### TAKlMJN
Analyzer ModellSN Analyzer Range (span)

ANAL YlERCALIBRATION DATA API Model 200 EH 50.2 ppm

Note: Difference must be lessthan 

### +1- 2 percent ofspan 7/20/2011 

### Cylinder Test Runs 

## 1 Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2 Upp_er

- ranae: 0.0

7/21/2011 

### Cylinder

Test Runs 2-3 Value

Zero Gas 0.0 Mid-rage 27.0 High-range: 50.2

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### EPA METHOD 6C ANALYZER CALIBRATION (502)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 Hiah-gas CC684

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 27.2 0.2 0.34% 50.2 0.0 0.00% 0.0 0.0 0.00%
Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.5 0.5 1.00% 27.3 0.3 0.54% 50.1 0.1 0.20%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percentofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.8 1.59% 1.5 2.99% UpscaleGas 27.2 26.5 -1.39% 26.5 -1.39% TEST RUN 2 Zero Gas 0.5 

### -0.1 -1.20% 0.4 -0.20% Upscale Gas 27.3 

### 26.7 -1.20% 25.2 -4.18% TEST RUN 3 Zero Gas 0.5 0.4 -0.20% 0.3 -0.40% UpscaleGas 27.3 25.2 -4.18% 25.5 -3.59% System Cahbration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift

### = [(Final System Cal. Response -Initial System Cal Response) 

### ISpan] x 100 Drift, Percentof

span 1.39% 0.00%

1.00% -2.99%

-0.20% 0.60% Certified Value 0.0 27.0 50.2

Bias Measured Run Corrected Averge, Raw Value, ppm

S02QQm S02

3.7 2.7

5.7 5.8

3.6 3.5



### 502 

# BARR

Project Sample Loc. Date Operators ArcelorMittal Furnace Stack C 7/20-21/11 

### TAKlMJN
Analyzer ModellSN Analyzer Range (span)

ANAL YlERCALIBRATION DATA API Model 200 EH 50.2 ppm

Note: Difference must be lessthan 

### +1- 2 percent ofspan 7/20/2011 

### Cylinder Test Runs 

## 1 Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2 Upp_er

- ranae: 0.0

7/21/2011 

### Cylinder

Test Runs 2-3 Value

Zero Gas 0.0 Mid-rage 27.0 High-range: 50.2

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### EPA METHOD 6C ANALYZER CALIBRATION (502)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 Hiah-gas CC684

Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.0 0.0 0.00% 27.2 0.2 0.34% 50.2 0.0 0.00% 0.0 0.0 0.00%
Analyzer Absolute Difference, Calibration Difference % ofSpan Response 0.5 0.5 1.00% 27.3 0.3 0.54% 50.1 0.1 0.20%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percentofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.8 1.59% 1.5 2.99% UpscaleGas 27.2 26.5 -1.39% 26.5 -1.39% TEST RUN 2 Zero Gas 0.5 

### -0.1 -1.20% 0.4 -0.20% Upscale Gas 27.3 

### 26.7 -1.20% 25.2 -4.18% TEST RUN 3 Zero Gas 0.5 0.4 -0.20% 0.3 -0.40% UpscaleGas 27.3 25.2 -4.18% 25.5 -3.59% System Cahbration Bias

- [(System Cal. Response

- Analyzer Cal. Response) 

### ISpan] x 100 Drift

### = [(Final System Cal. Response -Initial System Cal Response) 

### ISpan] x 100 Drift, Percentof

span 1.39% 0.00%

1.00% -2.99%

-0.20% 0.60% Certified Value 0.0 27.0 50.2

Bias Measured Run Corrected Averge, Raw Value, ppm

S02QQm S02

3.7 2.7

5.7 5.8

3.6 3.5



### 502

### EPA METHOD6C ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

ArcelorMittal Project Sample Loc. Date Operators Furnace Stack B



### ___**-=7::-72~0/2011** 

### TAKIMJN
Analyzer ModellSN Analyzer Range (span)

ANALYZER CALIBRATION DATA 50.2 Bovar921 ppm

Note: Difference must be less than 

### +1- 2 percentofspan Cylinder Test Runs _1

__ -_3_ Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (502)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 High-gas CC684

Analyzer Absolute Difference. Calibration Difference % ofSpan Response 0.0 0.0 0.00% 27.2 0.2 0.34% 50.2 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percentofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response. Response. Cal. Bias Response. Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.4 0.80% 1.0 1.99% Upscale Gas 27.2 26.5 -1.39% 26.2 -1.99% TEST RUN 2 Zero Gas 0.0 1.0 1.99% 1.0 1.99% Upscale Gas 27.2 26.2 -1.99% 26.4 -1.59% TEST RUN 3 Zero Gas 0.0 1.0 1.99% 1.3 2.59% Upscale Gas 27.2 26.4 -1.59% 27.3 0.20% System Calibration Bias

- [(System Cal. Response

- AnalyzerCal. Response) 

### ISpan) x 100 Drift

# = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan) x 100 Drift. Percent of

span 1.20% -0.60%

0.00% 0.40%

0.60% 1.79% Certified Value 0.0 27.0 50.2

Measured Run Averge. Raw

S02 ppm

6.3

5.9

6.4



### 502 Bias Corrected Value. ppm S02

5.9

5.3

5.6 

### EPA METHOD6C ANALYZER CALIBRATION and BIAS CORRECTED RESULTS

ArcelorMittal Project Sample Loc. Date Operators Furnace Stack B 7/20/2011 

### ----:T::-:A'7iK/MJN
Analyzer ModellSN Analyzer Range (span)

ANALYZER CALIBRATION DATA 50.2 Bovar921 ppm

Note: Difference must be less than 

### +1- 2 percentofspan Cylinder Test Runs _1

__ -_3_ Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### (502)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 High-gas CC684

Analyzer Absolute Difference. Calibration Difference % ofSpan Response 0.0 0.0 0.00% 27.2 0.2 0.34% 50.2 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percentofspan. Drift cannot exceed 

### +1- 3 percent ofspan

Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response. Response. Cal. Bias Response. Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.4 0.80% 1.0 1.99% Upscale Gas 27.2 26.5 -1.39% 26.2 -1.99% TEST RUN 2 Zero Gas 0.0 1.0 1.99% 1.0 1.99% Upscale Gas 27.2 26.2 -1.99% 26.4 -1.59% TEST RUN 3 Zero Gas 0.0 1.0 1.99% 1.3 2.59% Upscale Gas 27.2 26.4 -1.59% 27.3 0.20% System Calibration Bias 

### = [(System Cal. Response

- AnalyzerCal. Response) 

### ISpan) x 100 Drift

# = [(Final System Cal. Response

- Initial System Cal Response) 

### ISpan) x 100 Drift. Percent of

span 1.20% -0.60%

0.00% 0.40%

0.60% 1.79% Certified Value 0.0 27.0 50.2

Measured Run Averge. Raw

S02 ppm

6.3

5.9

6.4


### 502 Bias Corrected Value. ppm S02

5.9

5.3

5.6

### ArcelorMittal Project Sample Loc. Date Operators Furnace StackA 

### 7/19/2011**---=T~A~KI-::-M**

### JN/GZ
Analyzer ModellSN Analyzer Range (span)

ANALYZER CALIBRATION DATA 50.2 Bovar921 ppm

Note: Difference must be lessthan 

### +1- 2 percent ofspan Cylinder Test Runs _1

__ -_3

__ Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2 Upper

- range: 0.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### EPA METHOD 6C ANALYZER CALIBRATION (S02)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 High-gas CC684

Analyzer Absolute Difference, Calibration Difference % ofSpan Response -0.1 0.1 0.20% 27.2 0.2 0.34% 50.1 0.1 0.20% 0.0 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas -0.1 0.4 1.00% 0.4 1.00% Upscale Gas 27.2 26.8 -0.80% 26.3 -1.79% TEST RUN 2 Zero Gas -0.1 0.4 1.00% 0.2 0.60% Upscale Gas 27.2 26.3 -1.79% 26.0 -2.39% TEST RUN 3 Zero Gas 0.0 0.2 0.40% -0.1 -0.20% Upscale Gas 27.2 26.0 -2.39% 26.3 -1.79% System CalibratIon BIas

# = [(System Cal. Response

- AnalyzerCal. Response) 

### ISpan] x 100 Drift 

### = [(Final System Cal. Response -Initial System Cal Response) 

### ISpan] x 100 Drift, Percentof

span 0.00% -1.00%

-0.40% -0.60%

-0.60% 0.60% Certified Value 0.0 27.0 50.2

Bias Measured Run Corrected Averge, Raw Value, ppm

S02 ppm S02

5.4 5.1

5.8 5.7

6.2 6.3


### S02 Project Sample Loc. Date Operators ArcelorMittal

Analyzer ModellSN Analyzer Range (span) Furnace StackA 

### 7/19/2011 TAKIM

### JN/GZ

50.2

ANALYZER CALIBRATION DATA Bovar921 ppm

Note: Difference must be lessthan 

### +1- 2 percent ofspan Cylinder Test Runs _1

__ -_3

__ Value

Zero Gas 0.0 Mid Gas 27.0 High Gas 50.2**U~er**

### - range: 0.0

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

### EPA METHOD 6C ANALYZER CALIBRATION (S02)

Cylinder Serial No. Zero Gas Nitrogen Mid-gas CC104187 High-gas CC684

Analyzer Absolute Difference, Calibration Difference % ofSpan Response -0.1 0.1 0.20% 27.2 0.2 0.34% 50.1 0.1 0.20% 0.0 0.0 0.00%

Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan. Drift cannot exceed 

### +1- 3 percent ofspan
Initial Values Final Values Analyzer Cal System Cal System Cal System Cal System Cal

Response, Response, Cal. Bias Response, Cal. Bias TEST RUN 1 PPM PPM % ofSpan PPM % ofSpan Zero Gas -0.1 0.4 1.00% 0.4 1.00% Upscale Gas 27.2 26.8 -0.80% 26.3 -1.79% TEST RUN 2 Zero Gas -0.1 0.4 1.00% 0.2 0.60% Upscale Gas 27.2 26.3 -1.79% 26.0 -2.39% TEST RUN 3 Zero Gas 0.0 0.2 0.40% -0.1 -0.20% Upscale Gas 27.2 26.0 -2.39% 26.3 -1.79% System CalibratIon BIas

# = [(System Cal. Response

- AnalyzerCal. Response) 

### ISpan] x 100 Drift 

### = [(Final System Cal. Response -Initial System Cal Response) 

### ISpan] x 100 Drift, Percentof

span 0.00% -1.00%

-0.40% -0.60%

-0.60% 0.60% Certified Value 0.0 27.0 50.2

Bias Measured Run Corrected Averge, Raw Value, ppm

S02 ppm S02

5.4 5.1

5.8 5.7

6.2 6.3


### S02

## Routine DryGas MeterCalibration Control Module: C-5 Leak checks Date: 

### 07/09/11 Positive

- ok 

# BARRTechnician: TAK Negative ok

Orifice WetTest Dry Gas Meter WetTest Dry Gas

Diff Volume, Temp, 

## of Meter Volume Pressure H Ft· Inlet Outlet Temp, 

## of Ft"

Nominal Initial Initial Initial Initial Initial 0.500 6116.00 75.0 74.0 71.0 836.720 Actual Final Final Final Final Final 6122.00 74.0 74.0 71.0 842.670 0.50 Total Average Average Average Total 6.00 74.5 74.0 71.0 5.950 74.3 

# I Nominal Initial Initial Initial Initial Initial

1.000 6123.00 75.0 74.0 71.0 843.665 Actual Final Final Final Final Final 6131.00 75.0 74.0 71.0 851.600 1.00 Total Average Average Average Total 8.00 75.0 74.0 71.0 7.935 74.5 Tm Nominal Initial Initial Initial Initial Initial 2.000 6076.00 74.0 72.0 71.0 797.090 Actual Final Final Final Final Final 6086.00 75.0 73.0 71.0 806.980 2.00 Total Average Average Average Total 10.00 74.5 72.5 71.0 9.890 73.5 Tm Nominal Initial Initial Initial Initial Initial

3.000 6087.00 74.0 72.0 71.0 807.970 Actual Final Final Final Final Final 6099.00 76.0 73.0 71.0 819.870 3.00 Total Average Average Average Total 12.00 75.0 72.5 71.0 11.900 

# I I 73.8 Tm Nominal Initial Initial Initial Initial Initial 4.000 6100.00 76.0 74.0 71.0 820.850 Actual Final Final Final Final Final 6111.00 77.0 74.0 71.0 831.770 4.00 Total Average Average Average Total 11.00 76.5 74.0 71.0 10.920 75.3 Tm 

# I Barometric Press.

-- >5 W.C. Previous Y

-- > 15**in.H~** 

### Previous Delta H

-- Elapsed Meter Time of Coefficient Cal. Point 

## Y

Minutes SEC 14 56.19 Minutes 14.94 1.0133

Minutes SEC

14.0 28.15

14.47 1.0123

Minutes SEC 12 55.03

12.92 1.0107

Minutes SEC

12.0 38.97

12.65 1.0059

Minutes SEC 10.0 11.28

10.19 1.0052**~verage** 

# I 1.0095 28.89 1.0086 1.9293

Orifice Coefficien dH@

1.7952

1.8953

1.9389

1.9368

1.9880 1.9108 

# I Routine DryGas MeterCalibration Control Module: C-5 Leak checks Date: 

### 07/09/11 Positive

- ok 

# BARRTechnician: TAK Negative ok

Orifice WetTest Dry Gas Meter WetTest Dry Gas

Diff Volume, Temp, 

## of Meter Volume Pressure H Ft· Inlet Outlet Temp, 

## of Ft"

Nominal Initial Initial Initial Initial Initial 0.500 6116.00 75.0 74.0 71.0 836.720 Actual Final Final Final Final Final 6122.00 74.0 74.0 71.0 842.670 0.50 Total Average Average Average Total 6.00 74.5 74.0 71.0 5.950 74.3 

# I Nominal Initial Initial Initial Initial Initial

1.000 6123.00 75.0 74.0 71.0 843.665 Actual Final Final Final Final Final 6131.00 75.0 74.0 71.0 851.600 1.00 Total Average Average Average Total 8.00 75.0 74.0 71.0 7.935 74.5 Tm Nominal Initial Initial Initial Initial Initial 2.000 6076.00 74.0 72.0 71.0 797.090 Actual Final Final Final Final Final 6086.00 75.0 73.0 71.0 806.980 2.00 Total Average Average Average Total 10.00 74.5 72.5 71.0 9.890 73.5 Tm Nominal Initial Initial Initial Initial Initial

3.000 6087.00 74.0 72.0 71.0 807.970 Actual Final Final Final Final Final 6099.00 76.0 73.0 71.0 819.870 3.00 Total Average Average Average Total 12.00 75.0 72.5 71.0 11.900 

# I I 73.8 Tm Nominal Initial Initial Initial Initial Initial 4.000 6100.00 76.0 74.0 71.0 820.850 Actual Final Final Final Final Final 6111.00 77.0 74.0 71.0 831.770 4.00 Total Average Average Average Total 11.00 76.5 74.0 71.0 10.920 75.3 Tm 

# I Barometric Press.

-- >5 W.C. Previous Y

-- > 15**in.H~** 

### Previous Delta H

-- Elapsed Meter Time of Coefficient Cal. Point 

## Y

Minutes SEC 14 56.19 Minutes 14.94 1.0133

Minutes SEC

14.0 28.15

14.47 1.0123

Minutes SEC 12 55.03

12.92 1.0107

Minutes SEC

12.0 38.97

12.65 1.0059

Minutes SEC 10.0 11.28

10.19 1.0052**~verage** 

# I 1.0095 28.89 1.0086 1.9293

Orifice Coefficien dH@

1.7952

1.8953

1.9389

1.9368

1.9880 1.9108 

# I

# BARR

REFERENCE STANDARDS
Hart Scientific9103-A 

### sIn A1B289 Hart Scientific9140 

### sIn A1B086 Temperature Calibration Points Reference Deg F (To) Probe Temp (deg F) Reference Temp (deg R) deg F +460 Probe Temp (deg R), deg F +460 Difference (degrees) % DiffAbs. T

1700



## n:: 1600 

### cil 1500 Q) "0 

### u.i 1400 

## n:: 1300**~**

# ~ 1200 w 1100 0.. 

# ::z 1000 wIW 

### 900**~** 0.. 

### 800**~** 

### 0 () 

### 700 

### 0 

# ::z 600 

## n:: w 500 J:I

### 400 

# THERMOCOUPLE CALIBRATION

THERMOCOUPLE 10 C-5-1 Cal Date: 1/13/2011 

### CALIBRATION TECHNICIAN: 

## Meter In MMK2
TRACEABILITY DATE LABORATORY Report No. T10-0105-2 1/5/2010 

### Hart Scientific Report No. T10-0105-1 1/5/2010 

### Hart Scientific 

## 20 70 150
20 70 150 21 69 149 480 530 610 481 529 609 -1 1 1 0.2% 0.2% 0.2%

THERMOCOUPLE CALIBRATION

400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCE TEMPERATURE, deg.R

Technician signature 

# 1ItdI**~1** 

### QA signature 

# VLJ**~** FAHRENHEIT CALIBRATION RANGE -20 1200 

# BARR

REFERENCE STANDARDS
Hart Scientific9103-A 

### sIn A1B289 Hart Scientific9140 

### sIn A1B086 Temperature Calibration Points Reference Deg F (To) Probe Temp (deg F) Reference Temp (deg R) deg F +460 Probe Temp (deg R), deg F +460 Difference (degrees) % DiffAbs. T

1700



## n:: 1600 

### cil 1500 Q) "0 

### u.i 1400 

## n:: 1300**~**

# ~ 1200 w 1100 0.. 

# ::z 1000 wIW 

### 900**~** 0.. 

### 800**~** 

### 0 () 

### 700 

### 0 

# ::z 600 

## n:: w 500 J:I

### 400 

# THERMOCOUPLE CALIBRATION

THERMOCOUPLE 10 C-5-1 Cal Date: 1/13/2011 

### CALIBRATION TECHNICIAN: 

## Meter In MMK2
TRACEABILITY DATE LABORATORY Report No. T10-0105-2 1/5/2010 

### Hart Scientific Report No. T10-0105-1 1/5/2010 

### Hart Scientific 

## 20 70 150
20 70 150 21 69 149 480 530 610 481 529 609 -1 1 1 0.2% 0.2% 0.2%

THERMOCOUPLE CALIBRATION

400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCE TEMPERATURE, deg.R

Technician signature 

# 1ItdI**~1** 

### QA signature 

# VLJ**~** FAHRENHEIT CALIBRATION RANGE -20 1200

# THERMOCOUPLE CALIBRATION 

# BARR

THERMOCOUPLE 10 

## C-5-0 Cal Date: 1/13/2011 

## MeterOut CALIBRATIONTECHNICIAN: MMK2
REFERENCE STANDARDS TRACEABILITY DATE LABORATORY
HartScientific9103-A

### sIn A1B289 Report No. T10-0105-2 1/5/2010 

### HartScientific HartScientific9140 

### sIn A1B086 Report No. T10-0105-1 1/5/2010 

### HartScientific Temperature Calibration Points 20 70 150 Reference Deg F (To) 20 70 150 Probe Temp (deg F) 21 69 149 Reference Temp (deg R) deg F+

### 460 480 530 610 ProbeTemp (deg R), deg F+

### 460 481 529 609 Difference (degrees) -1 1 1 % DiffAbs. T 0.2% 0.2% 0.2%

THERMOCOUPLE CALIBRATION 1700

0:: 

### 1600

## ~ 1500 'tJ 

### W 1400 0:: 

### 1300 :::>

# ~ 1200 w 

## a..**~** 

### 1100
w 

### 1000fW 

### 900 -l 

## a.. :::> 

### 800 0 () 

### 700 0**~** 

### 600 0:: 

### w J: 

### 500f

### 400400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCE TEMPERATURE, deg.R

Technician signature 

## 1ftd1**~** QAsignature 

# \/\..J**~** FAHRENHEIT CALIBRATION RANGE -20 1200 

# THERMOCOUPLE CALIBRATION 

# BARR

THERMOCOUPLE 10 

## C-5-0 Cal Date: 1/13/2011 

## MeterOut CALIBRATIONTECHNICIAN: MMK2
REFERENCE STANDARDS TRACEABILITY DATE LABORATORY
HartScientific9103-A

### sIn A1B289 Report No. T10-0105-2 1/5/2010 

### HartScientific HartScientific9140 

### sIn A1B086 Report No. T10-0105-1 1/5/2010 

### HartScientific Temperature Calibration Points 20 70 150 Reference Deg F (To) 20 70 150 Probe Temp (deg F) 21 69 149 Reference Temp (deg R) deg F+

### 460 480 530 610 ProbeTemp (deg R), deg F+

### 460 481 529 609 Difference (degrees) -1 1 1 % DiffAbs. T 0.2% 0.2% 0.2%

THERMOCOUPLE CALIBRATION 1700

0:: 

### 1600

## ~ 1500 'tJ 

### W 1400 0:: 

### 1300 :::>

# ~ 1200 w 

## a..**~** 

### 1100
w 

### 1000fW 

### 900 -l 

## a.. :::> 

### 800 0 () 

### 700 0**~** 

### 600 0:: 

### w J: 

### 500f

### 400400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCE TEMPERATURE, deg.R

Technician signature 

## 1ftd1**~** QAsignature 

# \/\..J**~** FAHRENHEIT CALIBRATION RANGE -20 1200

# BARR PYROMETER CALIBRATION

Pyrometer Number: C-5 

### Date: 1/13/11 

### Pyrometer Reference: CL-300-1000F 

### Technician: TJW2

Pyrometer 0 

### F Reference (OF) Reference rC) Reading Pass/Fail
1000 538 1000 Pass
950 510 950 Pass
900 482 899 Pass
850 454 850 Pass
800 427 799 Pass
750 399 751 Pass
700 371 700 Pass
650 343 650 Pass
600 316 599 Pass
550 288 548 Pass
500 260 497 Pass
450 232 447 Pass
400 204 398 Pass
350 177 348 Pass
300 149 300 Pass
250 121 251 Pass
200 93 200 Pass
150 67 151 Pass
100 38 98 Pass
50 10 49 Pass
0 -18 1 Pass -50 -46 -49 Pass
Pass/Fail based on 

### +/- 0.75% of Renkin value

Technician signature: QA signature:



# BARR PYROMETER CALIBRATION

Pyrometer Number: C-5 

### Date: 1/13/11 

### Pyrometer Reference: CL-300-1000F 

### Technician: TJW2

Pyrometer 0 

### F Reference (OF) Reference rC) Reading Pass/Fail
1000 538 1000 Pass
950 510 950 Pass
900 482 899 Pass
850 454 850 Pass
800 427 799 Pass
750 399 751 Pass
700 371 700 Pass
650 343 650 Pass
600 316 599 Pass
550 288 548 Pass
500 260 497 Pass
450 232 447 Pass
400 204 398 Pass
350 177 348 Pass
300 149 300 Pass
250 121 251 Pass
200 93 200 Pass
150 67 151 Pass
100 38 98 Pass
50 10 49 Pass
0 -18 1 Pass -50 -46 -49 Pass
Pass/Fail based on 

### +/- 0.75% of Renkin value

Technician signature: QA signature:

# THERMOCOUPLE CALIBRATION 

# BARR

Cal Date: 

### 1/8/2011

REFERENCE STANDARDS TRACEABILITY
Hart Scientific9103-A 

### sIn A1B289 Report No.T10-0105-2 Hart Scientific 9140 

### sIn A1B086 Report No.T10-0105-1 Temperature Calibration Points 

## 32 212 Reference Deg F (To) 32 212 Probe Temp (deg 

### F) 34 212 Reference Temp (deg R) deg F

### +460 492 672 Probe Temp (deg R), deg F 

### +460 494 672 Difference (degrees) -2 0 % DiffAbs. T 0.4% 0.0% Is difference lessthan 1.5% at all measured points? YES



### 1700 1600
"i 

### 1500 f 

### 1400 

# ... ui II: 

### 1300 :>

## ~ 1200 w II. ::I 

### 1100 

### I!!
w oJ 

### 1000 II. :> 0 

### 900 

## g ::I 

### 800 II: w :r I- 

### 700 600 500 400 

### THERMOCOUPLE 10 TC4-3 M-5 Probe



### MMK2 CALIBRATION TECHNICIAN:
DATE LABORATORY


### 1/5/2010 Hart Scientific 

### 1/5/2010 Hart Scientific

400 650 Ambient 400 650 70 398 650 70 860 1110 530 858 1110 530

2 0 0 0.2% 0.0% 0.0%



### 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCE TEMPERATURE, deg.R



### Are extrapolated limits lessthan 1.5%? YES

Ifnot acceptable, describe corrective action:

Technician Signature 

# 1I1.dI**~** QAsignature 

# \/L-.J**~** FAHRENHEIT CALIBRATION RANGE -20 1200 

# THERMOCOUPLE CALIBRATION 

# BARR

Cal Date: 

### 1/8/2011

REFERENCE STANDARDS TRACEABILITY
Hart Scientific9103-A 

### sIn A1B289 Report No.T10-0105-2 Hart Scientific 9140 

### sIn A1B086 Report No.T10-0105-1 Temperature Calibration Points 

## 32 212 Reference Deg F (To) 32 212 Probe Temp (deg 

### F) 34 212 Reference Temp (deg R) deg F

### +460 492 672 Probe Temp (deg R), deg F 

### +460 494 672 Difference (degrees) -2 0 % DiffAbs. T 0.4% 0.0% Is difference lessthan 1.5% at all measured points? YES 

### THERMOCOUPLE 10 TC4-3 M-5 Probe



### MMK2 CALIBRATION TECHNICIAN:
DATE LABORATORY


### 1/5/2010 Hart Scientific 

### 1/5/2010 Hart Scientific

400 650 Ambient 400 650 70 398 650 70 860 1110 530 858 1110 530

2 0 0 0.2% 0.0% 0.0%



### 1700 

# THERMOCOUPLE CALIBRATION

"i 

### f



# ... ui II: :>

## ~ w II. ::I 

### I!!
w oJ II. :> 0 

## g ::I II: w :rI

### 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCE TEMPERATURE, deg.R



### Are extrapolated limits lessthan 1.5%? YES FAHRENHEIT CALIBRATION RANGE -20 1200
Ifnot acceptable, describe corrective action:

Technician Signature 

# 1I1.dI**~** QAsignature 

# \/L-.J**~**

### PitotTube Number: 

# q
-3 S·Type PitotTube Geometry Check

I**~** I 

### Length:

__ '"'1

__ 

### Function:

## ~/Free Inspection 

### Date: 17.

- 

## c."7

- (0 

### Technician:**~**

### M J<**~**

1. Areface openings perpendicularto tube axis? 

### 8"'YES(

### goto 

### 2) 

## 0 NO (go to 

### 1a)



## __ I I

# '~~--f--:~-~--:--~------­

.. 1-=--1

2. heface openings parallelto longitudinal axis?

# ~ES (go

### to 3) 

# d NO (go to2a),

3, Are legs ofequal length? 

### DYES(goto 4)

## ~(goto3;)

# --&----~~---~-----

4. hecenter-lines oflegs coincident? gYeS(goto 5) 

## 0 NO (go to 4a)

## --f----~~----<-:)-----

5. Does this pitottube pass all ofthe above crlterla?

Technician Signature:

Reviewed 

### by: 1a. IfNO, Isangle less than 10"? 

# o YES (goto2) 

# o NO (discontinue use)



# = 

# .., 

# .**~** 

## __**I,==,~** 

## __. __I

_____'

__.**~** 

## .. I I I I I • • •

2a. 

### IfNO, Is angle less than 5"? 

# o YES ( go to 

### 3) 

# o NO(discontinue use)



# -I:

# ~ *
-- 

# .--- -= ,.".r



# - -**~~-** 

# at:

. ___**~~;.**

3a. If NO. Is difference less than 1 

### IS inch? 

### B"Yr:;S (goto 4) DNO(discontinue use)



### -h4a. IfNO, are center-lines offace openings less than 1132 Inch? DYES(go to 5) 

## 0 NO (discontinue use)

# ~s 

# o NO 

# I 

# I I PitotTube Number: 

# q
-3 S·Type PitotTube Geometry Check

I**~** I 

### Length:

__ '"'1

__ 

### Function:

## ~/Free Inspection 

### Date: 17.

- 

## c."7

- (0 

### Technician:**~**

### M J<**~**

1. Areface openings perpendicularto tube axis? 

### 8"'YES(

### goto 

### 2) 

## 0 NO (go to 

### 1a)



## __ I I

# '~~--f--:~-~--:--~------­

.. 1-=--1

2. heface openings parallelto longitudinal axis?

# ~ES (go

### to 3) 

# d NO (go to2a),

3, Are legs ofequal length? 

### DYES(goto 4)

## ~(goto3;)

# --&----~~---~-----

4. hecenter-lines oflegs coincident? gYeS(goto 5) 

## 0 NO (go to 4a)

## --f----~~----<-:)-----

5. Does this pitottube pass all ofthe above crlterla?

Technician Signature:

Reviewed 

### by: 1a. IfNO, Isangle less than 10"? 

# o YES (goto2) 

# o NO (discontinue use)



# = 

# .., 

# .**~** 

## __**I,==,~** 

## __. __I

_____'

__.**~** 

## .. I I I I I • • •

2a. 

### IfNO, Is angle less than 

### 5'? 

# o YES ( go to 

### 3) 

# o NO(discontinue use)



# -I:

# ~ *
-- 

# .--- -= ,.".r



# - -**~~-** 

# -1:

. ___**~~;.**

3a. If NO. Is difference less than 1 

### IS inch? 

### B"Yr:;S (goto 4) DNO(discontinue use)



### -h4a. IfNO, are center-lines offace openings less than 1132 Inch? DYES(go to 5) 

## 0 NO (discontinue use)

# ~s 

# o NO 

# I 

# I I

## ANEROID BAROMETER CALIBRATION

Barometer 1.0. Number: 

# '3A

- 

# 09

Barometer Reference:

# f'R..,NC-O

Pretest Calibration:

BeforeAdlustment AfterAdjustment

Posttest Check:

Notes:

Barr Engineering Co. 4700W. 77th St Minneapolis, MN 55437 (952) 832·2600 

### Reference ("Hg) 

# 9-q. IS

Reference ("Hg) 

# 2'1.1(p Project Name:

________ _ Project Number:

_______ _

Barometer("Hg) Date Technician 

# :2.Q.20 

# 7-G--IL 

# -rAK

Barometer ("Hg) Date Technician 

# 2'1. 

# (et 7-2,,11 'TiJl,JZ

## ANEROID BAROMETER CALIBRATION

Barometer 1.0. Number: 

# '3A

- 

# 09

Barometer Reference:

# f'R..,NC-O

Pretest Calibration:

BeforeAdjustment AfterAdjustment

Posttest Check:

Notes:

Barr Engineering Co. 4700W. 77th St Minneapolis, MN 55437 (952) 832·2600 

### Reference ("Hg)

## ~q.lS

Reference ("Hg) 

# 2'1.1(p Project Name:

________ _ Project Number:

_______ _

Barometer("Hg) Date Technician 

# :2.Q.20 

# 7-G--11 

# -rAK

Barometer ("Hg) Date Technician 

# Z'1·LQ 7-2,,11 'TiJl,JZ-

# Appendix E
CylinderGas Certifications

# ;;I11I SC.OTT-MARRlN, INC.

___ 6531 

### BOX SPRINGS BLVD. • RIVERSIDE,CA92507 

### TELEPHONE(951)**653~6780.** 

### FAX(951)**653~2430**



### BARR01 TO: Barr

### Engineering Co Attn: Aaron Aamold 

### 7390 OHMS Lane Edina, MN**55439~2330** 

### (952) 832-2959 

# Report OfAnalysis EPA Protocol Gas Mixtures

REPORT NO:

.

### 56059-01 REPORT DATE: 

### August 13, 20090 CUSTOMER PO NO: 

### 20090730AAGA

CYLINDER NUMBER: 

## CC684

.CYLINDER SIZE: 150A(78 std cu ft) 

### CYLINDER PRESSURE: 

### 1100 psig

. ':'-;:'$'" .,. . . .. 

### COMPONENT CONCENTRATION (v/v) REFERENCE ANALYZER EXPIRATION REPLICATE 

## ±EPA UNCERTAINTY STANDARD MAKE, MODEL, SIN, DETECTION 

### DATE ANALYSIS DATA

Sulfur

### dioxide 50.2 ±

### 0.5 ppm

Nitrogen 

### Balance

. •:'..

. . ':'. :;,.,!:,

. :,.- 0'·: .'

. ';:.:;:.i: ':'J:**.~: ~)\~**  ,,:.'" ,1,:.'1**.,,~~".t.;::. :.'~**  .... :J.':'.' ,-: '. ·100

....::..•• :•• :., :;.:.

....,••••.**'~.:J. ~**  ;,' ft.'**~.'** .:' .••• . 

### ...,-" 

### ... '

ppm

### =umolalmole %

# = mole·% 

### SMI CYLINDER#: 

### AAL11047 @56.6ppmv



## ... ..'

.... 

### Bovarl'N Res Model 922M 8/1112011 Serial 

### # 9228379-1 Continuous UVPtlotomet.rv

. LAST

### CAL DATE:'

.712012009 MEAN:

' ..... "".**~.,** 

### .. 

### 8/412009 50.3 ppm 50.1 ppm 50.2 ppm 50.2 ppm

.: 

## ......... 8/1112009 50.2 ppm 50.3 ppm 50.2 

## ppm 50.2 ppm**<.~** 

### :.: ::

Theabove analyseswere perfonned in accordance with Procedure G1 ofthe EPATraceability Protocol, Report NumberEPA-6001R971121, dated September 1997. 'heabove analyses are invalid 

### ifthe cylinderpressure is lessthan 150 psig

.

.. ..



### ANALYST:

# ~ M.J.Monson " 

## '. APPROVED:

__**-I-~**

### _________ _

The only liabitityofthiscompanyforgaswhichfails 10 complywiththis analysis shall be replace entorreanalysisthereofbythe companywithout

### extiacost 

### STANDARD CAliBRATION 

### GASES IN ALUMINUM 

### CYLINDERS ·t·, 

# ;;I11I SC.OTT-MARRlN, INC.

___ 6531 

### BOX SPRINGS BLVD. • RIVERSIDE,CA92507 

### TELEPHONE(951)**653~6780.** 

### FAX(951)**653~2430**



### BARR01 TO: Barr

### Engineering Co Attn: Aaron Aamold 

### 7390 OHMS Lane Edina, MN**55439~2330** 

### (952) 832-2959 

# Report OfAnalysis EPA Protocol Gas Mixtures

REPORT NO:

.

### 56059-01 REPORT DATE: 

### August 13, 20090 CUSTOMER PO NO: 

### 20090730AAGA

CYLINDER NUMBER: 

## CC684

.CYLINDER SIZE: 150A(78 std cu ft) 

### CYLINDER PRESSURE: 

### 1100 psig

. ':'-;:'$'" .,. . . .. 

### COMPONENT CONCENTRATION (v/v) REFERENCE ANALYZER EXPIRATION REPLICATE 

## ±EPA UNCERTAINTY STANDARD MAKE, MODEL, SIN, DETECTION 

### DATE ANALYSIS DATA

Sulfur

### dioxide 50.2 ±

### 0.5 ppm

Nitrogen 

### Balance

. •:'..

. . ':'. :;,.,!:,

. :,.- 0'·: .'

. ';:.:;:.i: ':'J:**.~: ~)\~**  ,,:.'" ,1,:.'1**.,,~~".t.;::. :.'~**  .... :J.':'.' ,-: '. ·100

....::..•• :•• :., :;.:.

....,••••.**'~.:J. ~**  ;,' ft.'**~.'** .:' .••• . 

### ...,-" 

### ... '

ppm

### =umolalmole %

# = mole·% 

### SMI CYLINDER#: 

### AAL11047 @56.6ppmv



## ... ..'

.... 

### Bovarl'N Res Model 922M 8/1112011 Serial 

### # 9228379-1 Continuous UVPtlotomet.rv

. LAST

### CAL DATE:'

.712012009 MEAN:

' ..... "".**~.,** 

### .. 

### 8/412009 50.3 ppm 50.1 ppm 50.2 ppm 50.2 ppm

.: 

## ......... 8/1112009 50.2 ppm 50.3 ppm 50.2 

## ppm 50.2 ppm**<.~** 

### :.: ::

Theabove analyseswere perfonned in accordance with Procedure G1 ofthe EPATraceability Protocol, Report NumberEPA-6001R971121, dated September 1997. 'heabove analyses are invalid 

### ifthe cylinderpressure is lessthan 150 psig

.

.. ..



### ANALYST:

# ~ M.J.Monson " 

## '. APPROVED:

__**-I-~**

### _________ _

The only liabitityofthiscompanyforgaswhichfails 10 complywiththis analysis shall be replace entorreanalysisthereofbythe companywithout

### extiacost 

### STANDARD CAliBRATION 

### GASES IN ALUMINUM 

### CYLINDERS ·t·,'.,

. .**~.** 

# 51111 ..**~**

### . 

# SCOTT-MARRIN" INC.

6531 BOXSPRINGSBLVD. • RIVERSIDE,CA92507 TELEPHONE(951) 653"-6780. FAX (950653-2430 

# Report OfAnalysis EPA Protocol GasMixtures

BARR01 REPORT NO: 58420-01 TO: BarrEngineering Co Attn: Aaron Aamold 7390 OHMS Lane Edina, MN 55439-2330 (952) 832-2959

CYLINDER NUMBER: 

## CC104187 REPORT DATE: November4,20100 CUSTOMER PO NO: EM/06-0100.10TS101

CYLINDER

# size: 150A(102std cu ft)

. CYLINDER PRESSURE: 1450psig

COMPONENT CONCENTRATION 

### (v/v) REFERENCE ANALYZER EXPIRATION REPLICATE ANALYSIS DATA :t EPAUNCERTAINTY STANDARD MAKE, MODEL, SIN, DETECTION DATE

Sulfurdioxide 27.03

### ±0.28 ppm 

### GMIS BovarlW Res Model 922M 11f.U2012 11UU2010

Balance

ppm 

### =umole/mole %

### =mole-% CYLINDER#: Serial

### # 9228379-1 

### ALM003641 Continuous @26.24 ppmv UV Photometry LASTCALDATE: 

### 10/18/2010 26.96 ppm 27.00 ppm 27.05

## ppm MEAN: 27.00 ppm

The above analyses were performed inaccordancewith Procedure G1 ofthe EPATraceability Protocol, Report NumberEPA-600/R97/121, dated September 1997.

. The above analysesare invalid ifthe cylinder pressure is lessthan 150 psig.

ANALYST:

# ~ APPROVED: ----J

....... ------- 

### M.J.Monson
The onlyUabilityofthis companyforgaswhich falls to comply withthis analysis shall berepla ment orreanalysis thereofbythe companywithout axtra cos!.

STANDARD CAliBRATION GASES INALUMINUM CYLINDERS '.,

. .**~.** 

# 51111 ..**~**

### . 

# SCOTT-MARRIN" INC.

6531 BOXSPRINGSBLVD. • RIVERSIDE,CA92507 TELEPHONE(951) 653"-6780. FAX (950653-2430 

# Report OfAnalysis EPA Protocol GasMixtures

BARR01 REPORT NO: 58420-01 TO: BarrEngineering Co Attn: Aaron Aamold 7390 OHMS Lane Edina, MN 55439-2330 (952) 832-2959

CYLINDER NUMBER: 

## CC104187 REPORT DATE: November4,20100 CUSTOMER PO NO: EM/06-0100.10TS101

CYLINDER

# size: 150A(102std cu ft)

. CYLINDER PRESSURE: 1450psig

COMPONENT CONCENTRATION 

### (v/v) REFERENCE ANALYZER EXPIRATION REPLICATE ANALYSIS DATA :t EPAUNCERTAINTY STANDARD MAKE, MODEL, SIN, DETECTION DATE

Sulfurdioxide 27.03

### ±0.28 ppm 

### GMIS BovarlW Res Model 922M 11f.U2012 11UU2010

Balance

ppm 

### =umole/mole %

### =mole-% CYLINDER#: Serial

### # 9228379-1 

### ALM003641 Continuous @26.24 ppmv UV Photometry LASTCALDATE: 

### 10/18/2010 26.96 ppm 27.00 ppm 27.05

## ppm MEAN: 27.00 ppm

The above analyses were performed inaccordancewith Procedure G1 ofthe EPATraceability Protocol, Report NumberEPA-600/R97/121, dated September 1997.

. The above analysesare invalid ifthe cylinder pressure is lessthan 150 psig.

ANALYST:

# ~ APPROVED: ----J

....... ------- 

### M.J.Monson
The onlyUabilityofthis companyforgaswhich falls to comply withthis analysis shall berepla ment orreanalysis thereofbythe companywithout axtra cos!.

STANDARD CAliBRATION GASES INALUMINUM CYLINDERS

# ;;IIII SCOTT-MARRIN, INC.
-"'" 6531 BOX SPRINGS BLVD. • RIVERSIDE,

### CA92507 TELEPHONE 

### (951)653-6780. FAX 

### (951) 653-2430 

# Report OfAnalysis EPA Protocol GasMixtures

BARR01 REPORT NO: 58126-02 TO: Barr Engineering 

### Co Attn: Aaron Aamold 7390 OHMS Lane 

### Edina, MN 55439-2330 (952)832-2959 REPORT DATE: September2, 

### 20100 CUSTOMER PO NO: 201

### 00813A TYL

CYLINDER NUMBER: 

## ·CC111833 CYUNDER SIZE: 150A(141 std cu 

### It) CYLINDER PRESSURE: 2000 psig

COMPONENT CONCENTRATION 

### (v/v) REFERENCE ANALVZER EXPIRATION REPLICATE 

### :t EPAUNCERTAINTY STANDARD MAKE, MODEL. SIN. DEl1!CTION DATE ANALYSIS DATA

Carbon dioxide B.97 

### to.09 

### % GMIS Varian Model 3400 

### 8120/2013 812012010 CYUNDER#: Serial # 10680 B.97 % CC83094 Thermal Conductivity 8.97% @8.08% Gas Chromotography 8.97% LASTCALDATE: 

### 7126/2010 MEAN: 8.97% Oxygen 9.02 

### ±0.05 

### % GMIS Varian Model 3800 

### 8124/2013 8124/2010 CYLINDER#: Serial # None 9.02% CC81204 Thermal Conductivity 9.02% @9.89% Gas Chrornotography 9.02% LAST CALDATE: 

### 7/30/2010 MEAN: 9.02% Nitrogen Balance

ppm.umole/mole %

### =mole-% The aboveanalyseswere performed in accordancewith ProcedureG1 ofthe EPATraceability Protocol. Report Number EPA-6001R971121. dated September 1007. The above analyses are inva d

### ifthe inderpressure Is lessthan 150pslg.

ANALYST:

__**~-=-+-~<...::.....;;..;:o**

### .......___ APPROVED:**----I~** ______ _ 

### M.S.Calhoun

The onlyDablUIyofthiscompany forgas which fails to complywith this analysisshaP be repla mentor reanalysis thereofbythe companywithoutextra cosL STANDARD CAliBRATION GASES INALUMINUM CYLINDERS 

# ;;IIII SCOTT-MARRIN, INC.
-"'" 6531 BOX SPRINGS BLVD. • RIVERSIDE,

### CA92507 TELEPHONE 

### (951)653-6780. FAX 

### (951) 653-2430 

# Report OfAnalysis EPA Protocol GasMixtures

BARR01 REPORT NO: 58126-02 TO: Barr Engineering 

### Co Attn: Aaron Aamold 7390 OHMS Lane 

### Edina, MN 55439-2330 (952)832-2959 REPORT DATE: September2, 

### 20100 CUSTOMER PO NO: 201

### 00813A TYL

CYLINDER NUMBER: 

## ·CC111833 CYUNDER SIZE: 150A(141 std cu 

### It) CYLINDER PRESSURE: 2000 psig

COMPONENT CONCENTRATION 

### (v/v) REFERENCE ANALVZER EXPIRATION REPLICATE 

### :t EPAUNCERTAINTY STANDARD MAKE, MODEL. SIN. DEl1!CTION DATE ANALYSIS DATA

Carbon dioxide B.97 

### to.09 

### % GMIS Varian Model 3400 

### 8120/2013 812012010 CYUNDER#: Serial # 10680 B.97 % CC83094 Thermal Conductivity 8.97% @8.08% Gas Chromotography 8.97% LASTCALDATE: 

### 7126/2010 MEAN: 8.97% Oxygen 9.02 

### ±0.05 

### % GMIS Varian Model 3800 

### 8124/2013 8124/2010 CYLINDER#: Serial # None 9.02% CC81204 Thermal Conductivity 9.02% @9.89% Gas Chrornotography 9.02% LAST CALDATE: 

### 7/30/2010 MEAN: 9.02% Nitrogen Balance

ppm.umole/mole %

### =mole-% The aboveanalyseswere performed in accordancewith ProcedureG1 ofthe EPATraceability Protocol. Report Number EPA-6001R971121. dated September 1007. The above analyses are inva d

### ifthe inderpressure Is lessthan 150pslg.

ANALYST:

______**~~~~~~~**________ APPROVED:

________**~~---------------------** 

### M.S.Calhoun

The onlyDablUIyofthiscompany forgas which fails to complywith this analysisshaP be repla mentor reanalysis thereofbythe companywithoutextra cosL STANDARD CAliBRATION GASES INALUMINUM CYLINDERS

# = IIII**~5SS,l:L::~~~~~~C!~£'** TELEPHONE 

### (951)653

-6780 • FAX (951) 653

-2430 

# Report OfAnalysis EPA Protocol Gas Mixtures

BARR01 REPORT NO.: 

### 58126-01 TO: Barr Engineering Co Attn:Aaron Aamold 

### 7390 OHMS Lane Edina, MN 

### 55439-2330 (952) 832-2959 REPORT DATE; September

### 2,20100 CUSTOMER PO NO: 

### 20100813ATYL

CYLINDER NUMBER: 

## CC105471 CYLINDER SIZE: 150A(141 std cu

### ft) CYLINDER PRESSURE: 2000 psig

COMPONENT CONCENTRATION (v/v) REFERENCE ANALYZER EXPIRATION REPLICATE 

### ± EPA UNCERTAINTY STANDARD MAKE, MODel.,MI,DETECTION DATE ANALYSIS DATA

Carbon dioxide 5.49!0.05 

### % GMIS Varian Model3400 

### 8/2012013 812012010 CYLINDER#: Serial # 10680 5.49 % CC83094**ThennalConducIDn~** 5.48% @8.08% GasChromotography 5.49% LAST CAL DATE: 

### 712612010 MEAN: 5.49% Oxygen 21.91 i 0.23 % GMIS Varian Model 3800 

### 812412013 8124/2010 CYLINDER#: Serial # None 21.89% ALM031591 Thennal**Conductivi~** 21.88 % @24.35% Gas Chromotography 21.95 % LAST CAL DATE: 

### 8/9/2010 MEAN: 21.91 % Nitrogen Balance

ppm

### =umolelmole 

### %

### =mole-% The above analyses were performed in accordance with Procedure G1 Ofthe EPATraceabHIty Protocol, Report Number EPA-600/R97/121, dated September 1997. The above analyses are inva 'd ifthe Indarpressure is less than 150 psig.

ANALYST:

__**...l,..~-H~'==..:lo.-** 

### __ APPROVED:

__ -/-....!...-

______ _ M.S.Calhoun
The only HabiHty

### atthis companyforgaswhich faHs tocomplywiththis analysisshall be repla ment or reena/yslsthereof bythe companywithout extra cost. STANDARD CALIBRATION GASES IN ALUMINUM CYUNDERS 

# = IIII**~5SS,l:L::~~~~~~C!~£'** TELEPHONE 

### (951)653

-6780 • FAX (951) 653

-2430 

# Report OfAnalysis EPA Protocol Gas Mixtures

BARR01 REPORT NO.: 

### 58126-01 TO: Barr Engineering Co Attn:Aaron Aamold 

### 7390 OHMS Lane Edina, MN 

### 55439-2330 (952) 832-2959 REPORT DATE; September

### 2,20100 CUSTOMER PO NO: 

### 20100813ATYL

CYLINDER NUMBER: 

## CC105471 CYLINDER SIZE: 150A(141 std cu

### ft) CYLINDER PRESSURE: 2000 psig

COMPONENT CONCENTRATION (v/v) REFERENCE ANALYZER EXPIRATION REPLICATE 

### ± EPA UNCERTAINTY STANDARD MAKE, MODel.,MI,DETECTION DATE ANALYSIS DATA

Carbon dioxide 5.49!0.05 

### % GMIS Varian Model3400 

### 8/2012013 812012010 CYLINDER#: Serial # 10680 5.49 % CC83094**ThennalConducIDn~** 5.48% @8.08% GasChromotography 5.49% LAST CAL DATE: 

### 712612010 MEAN: 5.49% Oxygen 21.91 i 0.23 % GMIS Varian Model 3800 

### 812412013 8124/2010 CYLINDER#: Serial # None 21.89% ALM031591 Thennal**Conductivi~** 21.88 % @24.35% Gas Chromotography 21.95 % LAST CAL DATE: 

### 8/9/2010 MEAN: 21.91 % Nitrogen Balance

ppm

### =umolelmole 

### %

### =mole-% The above analyses were performed in accordance with Procedure G1 Ofthe EPATraceabHIty Protocol, Report Number EPA-600/R97/121, dated September 1997. The above analyses are inva 'd ifthe Indarpressure is less than 150 psig.

ANALYST:

__**...l,..~-H~'==..:lo.-** 

### __ APPROVED:

__ -/-....!...-

______ _ M.S.Calhoun
The only HabiHty

### atthis companyforgaswhich faHs tocomplywiththis analysisshall be repla ment or reena/yslsthereof bythe companywithout extra cost. STANDARD CALIBRATION GASES IN ALUMINUM CYUNDERS

# Appendix F

Process Operating Data

### FormST-05 

# OperatingData SummaryForProcess Sources

MinnesotaPollutionControlAgency 

### Minnesota

Pollution

Control 

## Agency 520LafayetteRd.N. SaintPaul. MN 55155-4194(651)-296-6300

TestDate(s): 711912011 S02EngTest ProcessEquipmentNumberlIdentification: SVOI4; CE014 CompanyName: ArcelorMittalMinorcaMine, Inc.
Equipment

### & OperatingData I. Process EquipmentDescription: Furnace StackA 

### 6/9/06**------~--~--~~--~--~--~~~----~~--~~,-~~--~-------** 

### 2. Weretheprocess andcontrol equipmentoperatedconsistentwithnormalprocedures? YES: Ifno, explain:

3. Includecopyofproductionrecords orinstrumentationwhich indicatesrate ofproductionoroperation oftheequipment, i.e. units perhour,poundsperhour,pressure, airflow, etc. 4. Date(s) andprocedure(s)oflastmaintenance/cleaningwithin 6months: DRemainsunchangedfrom info. providedintestplan Seeattached 5. 

### Process rate (amountofrawmaterial orfinished productperhour, wetordry

### basis)while combusting (listfuel type(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run2 Run 3 Greenball Feed Rate, L TPH 522 517 

### i 529

--------**~- -.----~---** **-------~** - 

### Fired Pellets, L TPH 368 356 372**-~----.** -- ------------ ---------_ ..

## _

.._--

------_. - --**-~--------.** ._-**-.~~~-** 

### Heatinput, MMBTU/hr 187.6 186.5 188.6 Averaae 523 365

187.6

6 Summarize control equipmentoperatingdatadocumentedduring testing. Valuesreported shouldreflectmaximum, minimum, averages, oras approved inthetestplan. (Seetestplan and approval letter)

ExamplesofAPCequipmentandparametersgenerallymonitored. Monitorasintestplan and/orapprovalletter • • Scrubber(listtype ofscrubber):**~P** 

### (in. w.c.) andfeedrate (gpmandpsig) • Baghouse,Cyclone, andMulti-clone: M 

### (in. w.c.)

• CatalyticIncinerator:(OFin ,oFouJ 

### and ThermalIncinerator: 

# eFternDerature) 

### • ESP: Numberand identityofoperating field(s) APCandparametermonitored Run

# I ScrubberPressureDrop, (inw.c.) 3.31 ScrubberFlow(gpm) 1151

-



### Listpollutant

### & averagingbasis.-shouldreflectpennit Runt ContinuousOpacityMonitor(listhourlyaverage) Monitor(listaveragingbasis): Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquare inch gauge Run2 Run3 ill 

### 3.3 3.28 1141 1139

Run2 Run3

in. w.c.-inchesofwatercolumn**~P-** 

### pressuredrop Ave.raKe l.30 11.44

Averae:e

Note: This form provides only asummaryofthe operating conditions during theperformancetest. Additional andmore detailedrecords arerequired to meettherequirements ofMinn. R. 7017.2035, subp. 3. This form is tobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-05,Page 1 of1 FormST-05 

# OperatingData SummaryForProcess Sources

MinnesotaPollutionControlAgency 

### Minnesota

Pollution

Control 

## Agency 520LafayetteRd.N. SaintPaul. MN 55155-4194(651)-296-6300

TestDate(s): 711912011 S02EngTest ProcessEquipmentNumberlIdentification: SVOI4; CE014 CompanyName: ArcelorMittalMinorcaMine, Inc.
Equipment

### & OperatingData I. Process EquipmentDescription: Furnace StackA 

### 6/9/06**------~--~--~~--~--~--~~~----~~--~~,-~~--~-------** 

### 2. Weretheprocess andcontrol equipmentoperatedconsistentwithnormalprocedures? YES: Ifno, explain:

3. Includecopyofproductionrecords orinstrumentationwhich indicatesrate ofproductionoroperation oftheequipment, i.e. units perhour,poundsperhour,pressure, airflow, etc. 4. Date(s) andprocedure(s)oflastmaintenance/cleaningwithin 6months: DRemainsunchangedfrom info. providedintestplan Seeattached 5. 

### Process rate (amountofrawmaterial orfinished productperhour, wetordry

### basis)while combusting (listfuel type(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run2 Run 3 Greenball Feed Rate, L TPH 522 517 

### i 529

--------**~- -.----~---** **-------~** - 

### Fired Pellets, L TPH 368 356 372**-~----.** -- ------------ ---------_ ..

## _

.._--

------_. - --**-~--------.** ._-**-.~~~-** 

### Heatinput, MMBTU/hr 187.6 186.5 188.6 Averaae 523 365

187.6

6 Summarize control equipmentoperatingdatadocumentedduring testing. Valuesreported shouldreflectmaximum, minimum, averages, oras approved inthetestplan. (Seetestplan and approval letter)

ExamplesofAPCequipmentandparametersgenerallymonitored. Monitorasintestplan and/orapprovalletter • • Scrubber(listtype ofscrubber):**~P** 

### (in. w.c.) andfeedrate (gpmandpsig) • Baghouse,Cyclone, andMulti-clone: M 

### (in. w.c.)

• CatalyticIncinerator:(OFin ,oFouJ 

### and ThermalIncinerator: 

# eFternDerature) 

### • ESP: Numberand identityofoperating field(s) APCandparametermonitored Run

# I ScrubberPressureDrop, (inw.c.) 3.31 ScrubberFlow(gpm) 1151

-



### Listpollutant

### & averagingbasis.-shouldreflectpennit Runt ContinuousOpacityMonitor(listhourlyaverage) Monitor(listaveragingbasis): Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquare inch gauge Run2 Run3 ill 

### 3.3 3.28 1141 1139

Run2 Run3

in. w.c.-inchesofwatercolumn**~P-** 

### pressuredrop Ave.raKe l.30 11.44

Averae:e

Note: This form provides only asummaryofthe operating conditions during theperformancetest. Additional andmore detailedrecords arerequired to meettherequirements ofMinn. R. 7017.2035, subp. 3. This form is tobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-05,Page 1 of1

### Form ST-OS 

# OperatingData SummaryForProcess Sources
Minnesota

Pollution

Control Agency MinnesotaPollutionControlAgency 520LafayetteRd.N. SaintPaul. MN 55155-4194(651)-296-6300

TestDate(s): 

### 7/20/2011 S02EngTest ProcessEquipmentNumberlldentification: SVOI5; CE015 CompanyName: ArcelorMittal MinorcaMine, Inc.
Equipment

### & OperatingData 1. Process EquipmentDescription: 

### Furnace Stack B 2. Weretheprocess and control equipmentoperatedconsistentwithnormal procedures? YES: NO: OJfno,explain: 6/9/06

3. Includecopy ofproductionrecords orinstrumentationwhich indicatesrate ofproductionoroperation oftheequipment, i.e. units perhour, poundsperhour,pressure, airflow, etc. 4. Date(s) and procedure(s) oflastmaintenance/cleaningwithin 6months: DRemainsunchanged from info. providedintestplan See attached 5. Processrate (amountofrawmaterial orfinished productperhour, wetordry

### basis)while combusting (listfueltype(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run

## 2 Run3 GreenballFeedRate, LTPH 506 518 519 FiredPellets, LTPH 356 377 375

-- "-------_

.._---- --

### c--**~---- ~~--**  ---"----

-- ----


### Heatinput, MMBTUlhr 188.5 192.3 189.2 AVerage 514 369

190.0

6 Summarize control equipmentoperatingdatadocumented duringtesting. Values reported shouldreflectmaximum, minimum, averages, oras approved inthe testplan. (Seetestplanandapproval letter)

ExamplesofAPCequipmentandparametersgenerallymonitored. Monitorasintestplan and/orapprovalletter • • Scrubber(listtype ofscrubber): M 

### (in. w.c.) and feedrate (gpm andpsig) • Bagbouse,Cyclone,andMulti-clone: AP (in. w.c.)

• CatalyticIncinerator :("Fin 

### ,oFouJ 

### and Thermal Incinerator: (OFtemoerature) 

### • ESP: Numberandidentityofoperating field(s) APCandparametermonitored Run 1 Run2 Run3 Averae:e ScrubberPressureDrop, (inw.c.) 3.68 3.74 3.70 3.71 ScrubberFlow (gpm) 1027 1012 1017 1019

Listpollutant

## & averagingbasis.--sbouICl

# reflectpermit Run 1 .-Run2 Run3 Average ContinuousOpacityMonitor(listhourlyaverage) Monitor(listaveragingbasis): Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquareincb gauge in. w.c.-incbes ofwatercolumn AP- pressure drop

Note: This form provides only asummary ofthe operatingconditionsduringthe performancetest. Additional and more detailedrecords arerequired to meettherequirements ofMinn. R. 7017.2035, subp. 3. This form istobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-05, Page 1 of 1 Form ST-OS 

# OperatingData SummaryForProcess Sources
Minnesota

Pollution

Control Agency MinnesotaPollutionControlAgency 520LafayetteRd.N. SaintPaul. MN 55155-4194(651)-296-6300

TestDate(s): 

### 7/20/2011 S02EngTest ProcessEquipmentNumberlldentification: SVOI5; CE015 CompanyName: ArcelorMittal MinorcaMine, Inc.
Equipment

### & OperatingData 1. Process EquipmentDescription: 

### Furnace Stack B 2. Weretheprocess and control equipmentoperatedconsistentwithnormal procedures? YES: NO: OJfno,explain: 6/9/06

3. Includecopy ofproductionrecords orinstrumentationwhich indicatesrate ofproductionoroperation oftheequipment, i.e. units perhour, poundsperhour,pressure, airflow, etc. 4. Date(s) and procedure(s) oflastmaintenance/cleaningwithin 6months: DRemainsunchanged from info. providedintestplan See attached 5. Processrate (amountofrawmaterial orfinished productperhour, wetordry

### basis)while combusting (listfueltype(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run

## 2 Run3 GreenballFeedRate, LTPH 506 518 519 FiredPellets, LTPH 356 377 375 f--- "-------_

.._---- -- --


### c-------**-------~~--** ---"----

-- ----


### Heatinput, MMBTUlhr 188.5 192.3 189.2 AVeralle 514 369

190.0

6 Summarize control equipmentoperatingdatadocumented duringtesting. Values reported shouldreflectmaximum, minimum, averages, oras approved inthe testplan. (Seetestplanandapproval letter)

ExamplesofAPCequipmentandparametersgenerallymonitored. Monitorasintestplan and/orapprovalletter • • Scrubber(listtype ofscrubber): M 

### (in. w.c.) and feedrate (gpm andpsig) • Bagbouse,Cyclone,andMulti-clone: AP (in. w.c.)

• CatalyticIncinerator :("Fin 

### ,OFoul) 

### and Thermal Incinerator: (OFtemneratur.) 

### • ESP: Numberandidentityofoperating field(s) APCandparametermonitored Run 1 Run2 Run3 Averate ScrubberPressureDrop, (inw.c.) 3.68 3.74 3.70 3.71 ScrubberFlow (gpm) 1027 1012 1017 1019

Listpollutant

## & averalingbasis.--sbouICl

# reflectpermit Run 1 Run2 Run3 Aver8lle ContinuousOpacityMonitor(listhourlyaverage) Monitor(listaveragingbasis): Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquareincb gauge in. w.c.-incbes ofwatercolumn AP- pressure drop

Note: This form provides only asummary ofthe operatingconditionsduringthe performancetest. Additional and more detailedrecords arerequired to meettherequirements ofMinn. R. 7017.2035, subp. 3. This form istobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-05, Page 1 of 1

### FormST-OS

# Qp~r~ti~gcp~tll_.§'qmmary**F~r.Pr~cess**

# ..Sources

- 'Y;--

## Minnes~ta**PoIl1ltioJiCont~oIAgency-** Minnesota

Pollution"



### Control 

## Agency 520LafayetteRd.N. SaintPaul, MN 

### 55155-4194(651)-296-6300

TestDate(s): 

### 7/20-2112011 S02EngTest ProcessEquipmentNumberlIdentification: SVOI6; CE016 CompanyName: ArcelorMittal MinorcaMine, Inc.
Equipment

### & OperatingData 1. Process EquipmentDescription: Furnace StackC 

### 6/9/06

2. Werethe process andcontrol**equipm-e-nt:-o-p-e-ra-:-te-d:-c-o-n-:si~st~en~t~W1-:·~th-n-o-rm-a:-I p-r-o-ce-:d:-ur-e-s~?--:YE=S~:---r.lliI~--~N-;-:O~:"D~~If"::"n-o-,-e-xp~l-:ai~n-:** 

### ---

3. Includecopyofproduction records orinstrumentationwhich indicatesrate ofproduction oroperation ofthe equipment, i.e. units perhour,poundsperhour, pressure, airflow, etc. 4. Date(s) andprocedure(s) oflastmaintenance/cleaningwithin 6months: DRemainsunchanged from info. providedin testplan See attached 5. Process rate (amountofrawmaterial orfinished productperhour, wetordrybasis)while combusting (listfuel type(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run2 Run 3 Greenball FeedRate, LTPH 524 513 513 FiredPellets,LTPH 366 322 341

Heatinput, MMBTU/hr 188.5 189.1 188.2 Average 517 343

188.6

6 Summarize control equipmentoperatingdatadocumented duringtesting. Values reported shouldreflectmaximum, minimum, averages, oras approved in the testplan. (Seetestplanand approval letter)

ExamplesofAPCequipmentandparametersgenerallymonitored. Monitorasin testplan and/orapproval letter•
• Scrubber(listtype ofscrubber):**~P** 

### (in. w.c.) and feed rate (gpm andpsig) • 8aghouse,Cyclone, andMulti-clone:**~p** 

### (in. w.c.)
• CatalyticIncinerator :(OFin ,OFout) 

### and Thermal Incinerator: (OFtemoer.tur.) 

### • ESP: Numberand identityofoperating field(s) APCandparametermonitored Run 1 ScrubberPressureDrop, (in w.c.) 4.39 ScrubberFlow (gpm) 1309

Listpollutant

### & averagingbasis.-shouldrenectpermit Run 1 ContinuousOpacityMonitor(listhourly average) Monitor(list averagingbasis): Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquareinch gauge Run2 Run 3 4.72 4.67 1297 1283

Run2 Run 3

in. w.c.-inchesofwatercolumn AP- 

### pressuredrop Averae:e 4.59 1296

Average

Note: This form provides only asummaryofthe operatingconditions during theperformancetest. Additional andmore detailedrecords arerequired to meettherequirements ofMinn. R. 7017.2035, subp. 3. This form is tobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-OS, Page 1 of1

# '~.2~ FormST-OS



# -
' 

### Minnesota

Pollution"



### Control 

## Agency

TestDate(s):

# Qp~r~ti~g,p~tll_.§'qmmary**F~r.Pr~cess**

# "Sources

- 'Y;--

## Minnes~ta**PoIl1ltioJiCont~oIAgency** 520LafayetteRd.N. SaintPaul, MN 

### 55155-4194(651)-296-6300

7/20-2112011 S02EngTest ProcessEquipmentNumberlIdentification: SVOI6; CE016 Company Name: ArcelorMittal MinorcaMine, Inc.
Equipment

### & OperatingData 

### 6/9/06

1. Process EquipmentDescription: Furnace StackC 2. Werethe process andcontrol

### equipm-e-nt~o-p-e-ra-:-te-d:-c":'o":'n-:si:-st-e-nt-W1-:·:-:th-n-o-rm-a:-I**p-r-o-ce-d:-ur-e-s~?--:YE:-:=~S:---r.lliI~---:N-::"O=-·"'.** o-rI-::"fn-o-,-e-xp-=l-:ai:-n-:

---

3. Includecopyofproduction records orinstrumentationwhich indicatesrate ofproduction oroperationofthe equipment, i.e. units perhour,poundsperhour, pressure, airflow, etc. 4. Date(s) andprocedure(s) ofJastmaintenance/cleaningwithin 6months: DRemainsunchanged from info. provided in test plan See attached 5. Process rate (amountofrawmaterial orfinished productperhour, wetordry basis)while combusting (listfuel type(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run2 Run 3 Greenball FeedRate, LTPH 524 513 513 FiredPellets,LTPH 366 322 341

Heatinput, MMBTU/hr 188.5 189.1 188.2 Averal[e 517 343

188.6

6 Summarize control equipmentoperatingdatadocumented duringtesting. Values reported shouldreflectmaximum, minimum, averages, oras approved in the testplan. (Seetest plan and approval letter)

ExamplesofAPCequipmentand parameters generallymonitored. Monitorasin testplan and/orapproval letter•
• Scrubber(listtype ofscrubber):**~P** 

### (in. w.c.) and feed rate (gpm andpsig) • 8aghouse,Cyclone, andMulti-clone:**~p** 

### (in. w.c.)
• CatalyticIncinerator :(OFin ,OFout) 

### and Thermal Incinerator: (OFtemoerstur.) 

### • ESP: Numberand identity ofoperating field(s) APCandparametermonitored Run 1 ScrubberPressureDrop, (in w.c.) 4.39 ScrubberFlow (gpm) 1309

Listpollutant

### & averaRin,;basis.-shouldrenectpermit Run 1 ContinuousOpacityMonitor(listhourly average) Monitor(list averagingbasis): Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquareinch gauge Run2 Run 3 4.72 4.67 1297 1283

Run2 Run 3

in. w.c.-inchesofwatercolumn AP- 

### pressuredrop Average 4.59 1296

Averal[e

Note: This form provides only asummaryofthe operatingconditions during theperformancetest. Additional andmore detailedrecords arerequired to meettherequirements ofMinn. R. 7017.2035, subp. 3. This form is tobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-OS, Page 1 of1

### Form ST-05 

# OperatingData SummaryForProcess Sources
Minnesota

Pollution

Control Agency MinnesotaPollutionControlAgency 520LafayetteRd.N. SaintPaul. MN 55155-4194(651)-296-6300

TestDate(s): 

### 7/2112011 S02EngTest ProcessEquipmentNumberlIdentification: SVOI7; CE017 CompanyName: ArcelorMitta1 MinorcaMine, Inc.
Equipment

### & OperatingData I. Process EquipmentDescription: 

### Furnace Stack 0 2. Weretheprocess andcontrol equipmentoperated consistentwithnormalprocedures? YES: NO: Dlfno,explain: 6/9/06

3. Includecopyofproduction records orinstrumentationwhich indicatesrate ofproduction oroperationoftheequipment, i.e. units perhour, poundsperhour, pressure, airflow, etc. 4. Date(s) andprocedure(s) oflastmaintenance/cleaningwithin 6months: DRemainsunchanged from info. providedin testplan See attached 5. Process rate (amountofraw material orfinishedproductperhour, wetordry

### basis) while combusting (listfuel type(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run2 Run3 GreenballFeedRate, LTPH 518 518 513

--- 

### c----

-- 

### Fired Pellets, LTPH 358 353 ! 

### 374**~-** f-------

--- 

# -1**.-~- -.--~-**  .._- -_. ---**-.--------~-** ----- -

- -- --- -- f------

---- ----**~** ----_. 

### I Heatinput, MMBTUlhr 190 187.2 182.1 Averale 516 362

186.4

6 Summarize control equipmentoperatingdatadocumentedduring testing. Valuesreportedshouldreflectmaximum, minimum, averages, oras approved inthetestplan. (Seetestplan andapproval letter)

Examples ofAPCequipmentandparametersgenerallymonitored. Monitorasintestplan and/orapprovalletter • • Scrubber(listtype ofscrubber):**~P**

### (in. w.c.) and feedrate (gpmandpsig) • Bagbouse,Cyclone, andMulti-clone:**~P** 

### (in. w.c.)

• CatalyticIncinerator 

### :eFin ,oFouJ and Thermallncinerator: 

### eF \ 

### • ESP: Numberand identityofoperatingfield(s) APCandparametermonitored Run1 Run2 Run3 Averalle ScrubberPressureDrop, (inw.e.) 4.34 4.33 4.37 4.35 ScrubberFlow(gpm) 1248 1250 1252 1250

-------


### Listpollutant

### & averagingbasis.--shouldreflectpermit Run 1 Run2 Run3 Avera!!e ContinuousOpacityMonitor(listhourlyaverage) Monitor(listaveragingbasis): Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquareincb gauge in. w.c.-inchesofwatercolumn AP- pressuredrop

Note: This formprovides only asummaryofthe operating conditionsduring the performancetest. Additional andmoredetailedrecords arerequired tomeetthe requirements ofMinn. R. 7017.2035, subp. 3. This form istobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-OS, Page I of1 Form ST-05 

# OperatingData SummaryForProcess Sources
Minnesota

Pollution

Control Agency MinnesotaPollutionControlAgency 520LafayetteRd.N. SaintPaul. MN 55155-4194(651)-296-6300

TestDate(s): 

### 7/2112011 S02EngTest ProcessEquipmentNumberlIdentification: SVOI7; CE017 CompanyName: ArcelorMitta1 MinorcaMine, Inc.
Equipment

### & OperatingData I. Process EquipmentDescription: 

### Furnace Stack 0 2. Weretheprocess andcontrol equipmentoperated consistentwithnormalprocedures? YES: NO: Dlfno,explain: 6/9/06

3. Includecopyofproduction records orinstrumentationwhich indicatesrate ofproduction oroperationoftheequipment, i.e. units perhour, poundsperhour, pressure, airflow, etc. 4. Date(s) andprocedure(s) oflastmaintenance/cleaningwithin 6months: DRemainsunchanged from info. providedin testplan See attached 5. Process rate (amountofraw material orfinishedproductperhour, wetordry

### basis) while combusting (listfuel type(s) and ratios as appropriate

ProcessParameter: listtypeandunits Run 1 Run2 Run3 GreenballFeedRate, LTPH 518 518 513 1----- 

### Fired Pellets, LTPH 358 353 ! 

### 374 c---- t--------- 

# -1**.-~- -.--~-**  .._- -_. ---**-.--------~-** ----- -

- -- --- -- r------- 

### I

---- ----**~** ----_. 

### Heatinput, MMBTUlhr 190 187.2 182.1 Avera!e 516 362

186.4

6 Summarize control equipmentoperatingdatadocumentedduring testing. Valuesreportedshouldreflectmaximum, minimum, averages, oras approved inthetestplan. (Seetestplan andapproval letter)

Examples ofAPCequipmentandparametersgenerallymonitored. Monitorasintestplan and/orapprovalletter • • Scrubber(listtype ofscrubber):**~P**

### (in. w.c.) and feedrate (gpmandpsig) • Bagbouse,Cyclone, andMulti-clone:**~P** 

### (in. w.c.)

• CatalyticIncinerator 

### :eFin ,oFouJ and Thermallncinerator: 

### eF 

# -, • ESP: Numberand identityofoperatingfield(s) APCandparametermonitored Run1 Run2 Run3 Averale ScrubberPressureDrop, (inw.e.) 4.34 4.33 4.37 4.35 ScrubberFlow(gpm) 1248 1250 1252 1250

-------


### Listpollutant

### & averagingbasis.--shouldreflectpermit Run 1 Run2 Run3 Averale ContinuousOpacityMonitor(listhourlyaverage) JMonitor(listaveragingbasis): )Monitor(listaveragingbasis): Abbreviations: APC-airpollution control Ibs.-pounds gpm.-gallons perminute psig-pressure persquareincb gauge in. w.c.-inchesofwatercolumn AP- pressuredrop

Note: This formprovides only asummaryofthe operating conditionsduring the performancetest. Additional andmoredetailedrecords arerequired tomeetthe requirements ofMinn. R. 7017.2035, subp. 3. This form istobe submitted as partoftheperformancetestreport.
aq-f6-ST05 Form ST-OS, Page I of1

### GP2 FEED HOURS GP2 (Green Feed) GFR5 (Returns) P1 (Finished Pellets) GP2 FEED HOURS GP2 (Green Feed) GFR5 (Returns) P1 (Finished Pellets)7/20/2011 

### 15:00 712012011 16:00 Preheat Gas Consumption
SCFlHour

85000 84000 BChalTlber Gas Consumption AChamber Gas Consumption
SCFIHOUR



### 48600 47500 SCF/Hour



### 56500 55300 MMBTUlhr

7/20/2011 

### 15:00 712012011 16:00 Preheat Gas Consumption
SCFlHour

85000 84000 BChalTlber Gas Consumption AChamber Gas Consumption
SCFIHOUR



### 48600 47500 SCF/Hour



### 56500 55300 MMBTUlhr1257:58 

### --1258.02-**_.=If'~1E(**

## . j

__ "

__**"1257,1~** .••



### ...i......**.1.~s..7~.~**..

### -lii;;~~~-"**A'~~ ~;Q,';i---+<-** **A';:-~"~--'+-** 

# -M--ljiJa

1259:34 

### "1259.34- !**I~Vol;'D~.**__**~_t-_._,_.,,~.**

## __..__**,~_=~.":::,125i:ci2'_**

## ,.. ,.J 

## f- 4.56**~!~~.!!., ·---·~'1~--**  

## 4---··**.~::~~**

## .. 4.25 1258.02 12S6.7if

## f----!~-.**}~:!.=:** 

# -+--'---1:*---""+-**~~~~~~:~-,**

# .

.**-:~~::~=**

# ... "l":'"**:~j~,~;~::**

4.23
. 1262.86

# -··~~=="·T:=~~:!Jit··

'1259.34

"125734 

### 1258.46 1258:48 ········1258:46 ······i

1257:5.-· ,3.44 3:46·······

### -···-fl;~- 

# ..j.

_. ;._.**_.11~~.~..._**



### f

## 'H~fo .•

... ! 

### 114cin

.



## .....roO

. 'H4i:"54



# ..**_.==~. ±:'~'.~** 

### "11.40.22-

.:. L...,;.:.::.-"''';.;

.. '''

...**~_-** ._ .•**:._~**__.•

## !.3!1_

.._ ... _.__ H,!!!r:-

__.. !

# Appendix G
Project Participants and Contact Information 

# Appendix G
Project Participants and Contact Information

# Project Participants and Contact Information

ArcelorMittal Minorca Mine, Inc. JaimeBaggenstoss

- EnvironmentalEngineer Adam Sersha

- Process Engineer



## Barr Engineering Company
TimRussell- VicePresident/ChemicalEngineer TomKuchinski

- SeniorAirQualityTechnician RichardBerg

- SeniorAirQualityTechnicianIProjectManager GabeZika

- AirQualityTechnician RyanPantzke

- Air QualityTechnician MikeNorstrem

- Air QualityTechnician



## CONTACTINFORMATION ArcelorMittalMinorcaMine,Inc. JaimeBaggenstoss EnvironmentalEngineer ArcelorMittalMinorcaMine, Inc. P.O. Box 1 5950 OldHwy53 Virginia, MN55792 (218) 749-5910 ext. 

## 283 (218) 749-5256 jaime.baggenstoss@arcelormittal.com

#23691223.00 

## BarrEngineeringCo. RichardBerg Sr. AirQualityTechnician BarrEngineeringCompany 4700W. 77 Street Minneapolis, MN55435 (952) 832-2787 (952) 832-2601 rberg@barr.com 

# Project Participants and Contact Information

ArcelorMittal Minorca Mine, Inc. JaimeBaggenstoss

- EnvironmentalEngineer Adam Sersha

- Process Engineer



## Barr Engineering Company
TimRussell- VicePresident/ChemicalEngineer TomKuchinski

- SeniorAirQualityTechnician RichardBerg

- SeniorAirQualityTechnicianIProjectManager GabeZika

- AirQualityTechnician RyanPantzke

- Air QualityTechnician MikeNorstrem

- Air QualityTechnician



## CONTACTINFORMATION ArcelorMittalMinorcaMine,Inc. JaimeBaggenstoss EnvironmentalEngineer ArcelorMittalMinorcaMine, Inc. P.O. Box 1 5950 OldHwy53 Virginia, MN55792 (218) 749-5910 ext. 

## 283 (218) 749-5256 jaime.baggenstoss@arcelormittal.com

#23691223.00 

## BarrEngineeringCo. RichardBerg Sr. AirQualityTechnician BarrEngineeringCompany 4700W. 77 Street Minneapolis, MN55435 (952) 832-2787 (952) 832-2601 rberg@barr.com