From: <French.Chuck@epamail.epa.gov>

To: Fairchild.Susan@epamail.epa.gov; Donna.Lazzari@erg.com; Danny.Greene@erg.com

Date: 9/30/2010 6:02 PM

Subject: Fw: Gopher Resource Stack Test Data 2010

Attachments: Gopher ICR Prelim v2.pdf; EPA114PRODTHURSDAYfinalINFO.1.xlsx; 

EPA114PRODTUESDAYfinalINFO.1.xlsx; EPA114PRODUCTIONscrubber2010finalINFO 1.xlsx; 

EPA114PRODWEDNESDAYfinal.1.xlsx

See below and attached.

----- Forwarded by Chuck French/RTP/USEPA/US on 09/30/2010 06:01 PM

-----

 

From: "Barcus, David" <David.Barcus@grcmn.com> 

 

To: Chuck French/RTP/USEPA/US@EPA 

 

Date: 09/30/2010 04:30 PM 

 

Subject: Gopher Resource Stack Test Data 2010 

 

Mr. Chuck French

Attached is the preliminary torit/scrubber stack testing data and

production information that was done at Gopher Resource in August and

September of this year. I had problems attaching the data to the ftp

site so I also mailed them to your attention. If you have any questions

please feel free to contact me at 651-405-2229.

Thank You

Dave Barcus

EH&S Specialist

Gopher Resource LLC

651-405-2229 Direct

612-309-6745 Cell

651-405-6425 Fax

david.barcus@grcmn.com

(See attached file: Gopher ICR Prelim v2.pdf)(See attached file:

EPA114PRODTHURSDAYfinalINFO.1.xlsx)(See attached file:

EPA114PRODTUESDAYfinalINFO.1.xlsx)(See attached file:

EPA114PRODUCTIONscrubber2010finalINFO 1.xlsx)(See attached file:

EPA114PRODWEDNESDAYfinal.1.xlsx)
Gopher Resource Corporation

Gopher Resource Corporation Particulate Results

Eagan, Minnesota Cartridge Dust Collector Stack

Pace Project No. 1007-103 Test 1

Parameter Run 1 Run 2 Run 3

Date of Run 8/3/10 8/3/10 8/3/10

Time of Run 0830-1139 1245-1555 1653-1959

Sample Duration, Minutes 180 180 180

Average Flue Gas Temperature, °F 121.9 128.5 125.4

Moisture Content of Flue Gas, %v/v 2.7 2.0 2.2

Particulate Collected, mg

 Dry Catch 4.9 6.7 9.5

 Inorganic Wet Catch NR NR NR

 Organic Wet Catch NR NR NR

Volumetric Flow Rate (Rounded to 1000 CFM)

 ACFM 218,000 211,000 201,000

 SCFM 192,000 184,000 176,000

 DSCFM 187,000 180,000 172,000

Table 7

Sample Volume, Meter Conditions, Ft3 157.63 153.74 147.02

Sample Volume, Dry Standard, Ft3 145.07 139.16 133.46

Particulate Concentration

 Dry Catch, GR/DSCF 0.0005 0.0007 0.0011

 Inorganic Wet Catch, GR/DSCF NR NR NR

 Organic Wet Catch, GR/DSCF NR NR NR

 Dry Catch+Organic WC, GR/DSCF NA NA NA

 Total Particulate (PM-10 Eq.), GR/DSCF NA NA NA

Particulate Emission Rate

 Dry Catch Only, LB/HR 0.84 1.15 1.62

 Inorganic Wet Catch Only, LB/HR NR NR NR

 Organic Wet Catch Only, LB/HR NR NR NR

 Dry Catch+Organic WC, LB/HR NA NA NA

 Total Particulate (PM-10 Eq.), LB/HR NA NA NA

 NR=Not required or not requested. NA = Not applicable 
Gopher Resource Corporation

Gopher Resource Corporation Particulate Results

Eagan, Minnesota Cartridge Dust Collector CE008/009 Stack

Pace Project No. 1007-103 Test 1

Parameter Run 2 Run 3 Run 4

Date of Run 8/4/10 8/4/10 8/5/10

Time of Run 1253-1559 1655-2000 0723-1026

Sample Duration, Minutes 180 180 180

Average Flue Gas Temperature, °F 114.4 111.0 104.6

Moisture Content of Flue Gas, %v/v 2.3 2.4 1.7

Particulate Collected, mg

 Dry Catch 5.3 5.8 7.2

 Inorganic Wet Catch NR NR NR

 Organic Wet Catch NR NR NR

Volumetric Flow Rate (Rounded to 1000 CFM)

 ACFM 138,000 141,000 140,000

 SCFM 123,000 126,000 127,000

 DSCFM 120,000 123,000 125,000

Table 8

Sample Volume, Meter Conditions, Ft3 143.01 146.12 142.59

Sample Volume, Dry Standard, Ft3 129.21 132.68 133.33

Particulate Concentration

 Dry Catch, GR/DSCF 0.00063 0.00067 0.00083

 Inorganic Wet Catch, GR/DSCF NR NR NR

 Organic Wet Catch, GR/DSCF NR NR NR

 Dry Catch+Organic WC, GR/DSCF NA NA NA

 Total Particulate (PM-10 Eq.), GR/DSCF NA NA NA

Particulate Emission Rate

 Dry Catch Only, LB/HR 0.65 0.71 0.89

 Inorganic Wet Catch Only, LB/HR NR NR NR

 Organic Wet Catch Only, LB/HR NR NR NR

 Dry Catch+Organic WC, LB/HR NA NA NA

 Total Particulate (PM-10 Eq.), LB/HR NA NA NA

 NR=Not required or not requested. NA = Not applicable 
Gopher Resource Corporation

Gopher Resource Corporation Particulate Results

Eagan, Minnesota Breaker Scrubber Stack

Pace Project No. 1007-103 Test 1

Parameter Run 1 Run 2 Run 3

Date of Run 9/14/10 9/14/10 9/14/10

Time of Run 0835-1137 1215-1517 1600-1703

Sample Duration, Minutes 180 180 180

Average Flue Gas Temperature, °F 81.3 77.5 82.4

Moisture Content of Flue Gas, %v/v 3.0 3.5 3.2

Particulate Collected, mg

 Dry Catch 14.0 14.7 12.7

 Inorganic Wet Catch NR NR NR

 Organic Wet Catch NR NR NR

Volumetric Flow Rate (Rounded to 10 CFM)

 ACFM 9,210 8,940 8,740

 SCFM 8,770 8,580 8,310

 DSCFM 8,510 8,280 8,050

Table 9

Sample Volume, Meter Conditions, Ft3 150.92 149.64 145.79

Sample Volume, Dry Standard, Ft3 146.28 142.14 137.14

Particulate Concentration

 Dry Catch, GR/DSCF 0.0015 0.0016 0.0014

 Inorganic Wet Catch, GR/DSCF NR NR NR

 Organic Wet Catch, GR/DSCF NR NR NR

 Dry Catch+Organic WC, GR/DSCF NA NA NA

 Total Particulate (PM-10 Eq.), GR/DSCF NA NA NA

Particulate Emission Rate

 Dry Catch Only, LB/HR 0.11 0.11 0.10

 Inorganic Wet Catch Only, LB/HR NR NR NR

 Organic Wet Catch Only, LB/HR NR NR NR

 Dry Catch+Organic WC, LB/HR NA NA NA

 Total Particulate (PM-10 Eq.), LB/HR NA NA NA

 NR=Not required or not requested. NA = Not applicable 
Gopher Resource Corporation

Gopher Resource Corporation Speciated Constituent Results

Eagan, Minnesota Cartridge Dust Collector Stack

Pace Project No. 1007-103 Test 1

Parameter Run 1 Run 2 Run 3 Average

Date of Run 8/3/10 8/3/10 8/3/10

Time of Run 830-1139 1245-1555 1653-1959

Sample Duration (Minutes) 180 180 180

Stack Temperature (°F) 122 129 125 125

Duct Moisture Content (%v/v) 2.7 2.0 2.2 2.3

Volumetric Flow Rate (Rounded to 1000 CFM)

 ACFM 218,000 211,000 201,000 210,000

 SCFM 192,000 184,000 176,000 184,000

 DSCFM 187,000 180,000 172,000 180,000

Constituent Concentration, μg/dscm

 Arsenic 0.95 2.77 0.92 1.54

 Beryllium <0.0061 <0.0061 <0.0066 <0.0063

 Cadmium 0.09 0.11 0.05 0.08

 Chromium 0.20 0.19 <0.026 0.14

Lead 18 6 17 4 15 9 17 3

Table 10

 Lead 18.6 17.4 15.9 17.3

 Manganese <0.024 <0.024 <0.026 <0.025

 Nickel 0.10 0.16 <0.026 0.094

 Mercury <0.12 <0.12 <0.13 <0.13

Constituent Mass Rate, LB/HR

 Arsenic 0.00066 0.00187 0.00059 0.00104

 Beryllium <0.000004 <0.000004 <0.000004 <0.000004

 Cadmium 0.00006 0.00007 0.00003 0.00006

 Chromium 0.00014 0.00013 <0.000017 0.00010

 Lead 0.013 0.012 0.010 0.012

 Manganese <0.000017 <0.000016 <0.000017 <0.000017

 Nickel 0.000070 0.00011 <0.000017 0.000064

 Mercury <0.000085 <0.000082 <0.000085 <0.000084
Gopher Resource Corporation

Gopher Resource Corporation Speciated Constituent Results

Eagan, Minnesota Cartridge Dust Collector CE008/009 Stack

Pace Project No. 1007-103 Test 1

Parameter Run 1 Run 2 Run 3 Average

Date of Run 8/4/10 8/4/10 8/5/10

Time of Run 1253-1559 1655-2000 723-1026

Sample Duration (Minutes) 180 180 180

Stack Temperature (°F) 114 111 105 110

Duct Moisture Content (%v/v) 2.3 2.4 1.7 2.2

Volumetric Flow Rate (Rounded to 1000 CFM)

 ACFM 138,000 141,000 140,000 140,000

 SCFM 123,000 126,000 127,000 126,000

 DSCFM 120,000 123,000 125,000 123,000

Constituent Concentration, μg/dscm

 Arsenic <0.027 <0.027 <0.026 <0.027

 Beryllium <0.0068 <0.0068 <0.0066 <0.0068

 Cadmium <0.027 <0.027 <0.026 <0.027

 Chromium <0.027 0.068 <0.026 <0.041

Lead 2 56 2 21 2 00 2 26

Table 11

 Lead 2.56 2.21 2.00 2.26

 Manganese 0.54 <0.027 <0.026 <0.198

 Nickel <0.027 <0.027 <0.026 <0.027

 Mercury <0.14 <0.14 <0.13 <0.14

Constituent Mass Rate, LB/HR

 Arsenic <0.000012 <0.000013 <0.000012 <0.000012

 Beryllium <0.000003 <0.000003 <0.000003 <0.000003

 Cadmium <0.000012 <0.000013 <0.000012 <0.000012

 Chromium <0.000012 0.000031 <0.000012 <0.000019

 Lead 0.0012 0.0010 0.0009 0.0010

 Manganese 0.00024 <0.000013 <0.000012 <0.000089

 Nickel <0.000012 <0.000013 <0.000012 <0.000012

 Mercury <0.000062 <0.000063 <0.000062 <0.000062
Gopher Resource Corporation

Gopher Resource Corporation Speciated Constituent Results

Eagan, Minnesota Breaker Scrubber Stack

Pace Project No. 1007-103 Test 1

Parameter Run 1 Run 2 Run 3 Average

Date of Run 8/3/10 8/3/10 8/3/10

Time of Run 830-1139 1245-1555 1653-1959

Sample Duration (Minutes) 180 180 180

Stack Temperature (°F) 81 77 82 80

Duct Moisture Content (%v/v) 3.0 3.5 3.2 3.2

Volumetric Flow Rate (Rounded to 10 CFM)

 ACFM 9,210 8,940 8,740 8,960

 SCFM 8,770 8,580 8,310 8,560

 DSCFM 8,510 8,280 8,050 8,280

Constituent Concentration, μg/dscm

 Arsenic 0.89 1.08 0.69 0.88

 Beryllium <0.0060 <0.0060 <0.0064 <0.0062

 Cadmium 0.17 0.27 0.27 0.24

 Chromium 0.11 0.36 0.14 0.21

Lead 166 168 234 189

Table 12

 Lead 166 168 234 189

 Manganese 1.32 1.36 1.18 1.29

 Nickel 0.22 0.21 0.48 0.30

 Mercury <0.12 <0.12 <0.13 <0.12

Constituent Mass Rate, LB/HR

 Arsenic 0.000028 0.000033 0.000021 0.000027

 Beryllium <0.0000002 <0.0000002 <0.0000002 <0.0000002

 Cadmium 0.000006 0.000008 0.000008 0.000007

 Chromium 0.000004 0.000011 0.000004 0.000006

 Lead 0.0053 0.0052 0.0071 0.0059

 Manganese 0.000042 0.000042 0.000036 0.000040

 Nickel 0.000007 0.000007 0.000015 0.000009

 Mercury <0.000004 <0.000004 <0.000004 <0.000004
Gopher Resource Corporation

Gopher Resource Corporation Speciated Constituent Results

Eagan, Minnesota Cartridge Dust Collector Stack

Pace Project No. 1007-103 Test 1

Parameter Run 1 Run 2 Run 3 Average

Date of Run 8/3/10 8/3/10 8/3/10

Time of Run 830-1139 1245-1555 1653-1959

Sample Duration (Minutes) 180 180 180

Stack Temperature (°F) 122 129 121 124

Duct Moisture Content (%v/v) 3.2 2.2 2.9 2.8

Volumetric Flow Rate (Rounded to 1000 CFM)

 ACFM 187,000 193,000 194,000 191,000

 SCFM 164,000 168,000 171,000 168,000

 DSCFM 159,000 165,000 166,000 163,000

Constituent Mass Collected, mg

 Hexavalent Chromium 0.00017 0.00014 0.00014 0.00015

Table 13

Constituent Concentration, μg/dscm

 Hexavalent Chromium 0.048 0.040 0.038 0.042

Constituent Mass Rate, LB/HR

 Hexavalent Chromium 0.000028 0.000025 0.000024 0.000026
Gopher Resource Corporation

Gopher Resource Corporation Speciated Constituent Results

Eagan, Minnesota Cartridge Dust Collector CE008/009 Stack

Pace Project No. 1007-103 Test 1

Parameter Run 1 Run 2 Run 3 Average

Date of Run 8/4/10 8/4/10 8/4/10

Time of Run 848-1154 1253-1559 1655-2000

Sample Duration (Minutes) 180 180 180

Stack Temperature (°F) 110 110 111 111

Duct Moisture Content (%v/v) 2.3 2.4 1.7 2.1

Volumetric Flow Rate (Rounded to 1000 CFM)

 ACFM 136,000 139,000 138,000 138,000

 SCFM 122,000 125,000 124,000 123,000

 DSCFM 119,000 122,000 122,000 121,000

Constituent Mass Collected, mg

 Hexavalent Chromium <0.00010 <0.00011 <0.00011 <0.00011

Table 14

Constituent Concentration, μg/dscm

 Hexavalent Chromium <0.026 <0.029 <0.029 <0.028

Constituent Mass Rate, LB/HR

 Hexavalent Chromium <0.000012 <0.000013 <0.000013 <0.000013
EPA114PRODUCTIONINFO.1 Tuesday, August 3, 2010

5-6 am 6-7 am 7-8 am 8-9 am 9-10 am 10-11am 11-12pm 12-1 pm 1-2 pm 2-3 pm 3-4 pm 4-5 pm 5-6 pm 6-7 pm 7-8 pm 8-9 pm 9-10 pm 10-11 pm

RAW MAT. 

PROCESSING Test runs: 8:30-11:39am; 12:45-15:55; 16:53-19:59

Raw Material Thoughput (tons/hr) 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95 41.95

Face Velocity (feet/sec) 6 6.8 7.2 7

CHARGING 

MATERIAL HAND.

Through-put (tons/hr)

Face Velocity (feet/sec) 5.7 8 7.5 6.5

FEED DRYER:

Charge Rate (tons/hr) 34.85 34.85 34.85 34.83 34.83 34.83 34.83 34.83 34.83 34.83 34.83 33.9 33.9 33.9 33.9 33.9 33.9 33.9

Operating 

Temperature (F) 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340

BLAST

Charge Rate (tons/hr) 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58 4.58

Operating Temp 

(hourly average F) 864 671 565 717 712 714 621 587 680 572 556 603 715 755 743 596 578 537

Lead production 

(tons/hr) 2 2 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

East Reverb

Charge Rate (tons/hr) 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45 35.45

Operating Temp. 

(hourly average F) 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+

Lead production 

(tons/hr) 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14 15.14

REFINING & 

ALLOYING OPS

Production (tons/hr)

Casting Operations

Production (tons/hr)

9 Kettles in various steps in the process

Poured 100 tons from 7:30pm-11pm
EPA114PRODUCTIONINFO.1 Wednesday, August 4, 2010

5-6 am 6-7 am 7-8 am 8-9 am 9-10 am 10-11am 11-12pm 12-1 pm 1-2 pm 2-3 pm 3-4 pm 4-5 pm 5-6 pm 6-7 pm 7-8 pm 8-9 pm 9-10 pm 10-11 pm

RAW MAT. 

PROCESSING Test runs: 8:48-11:54; 12:53-15:59; 16:55-20:00

Raw Material Thoughput (tons/hr) 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64 40.64

Face Velocity (feet/sec) 5 5.1 3.3 8

CHARGING 

MATERIAL HAND.

Through-put (tons/hr)

Face Velocity (feet/sec) 7.3 7.3 10.5 6.1

FEED DRYER:

Charge Rate (tons/hr) 33.88 33.88 33.88 32.8 32.8 32.8 32.8 32.8 32.8 32.8 32.8 31.2 31.2 31.2 31.2 31.2 31.2 31.2

Operating 

Temperature (F) 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340

BLAST

Charge Rate (tons/hr) 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06 5.06

Operating Temp 

(hourly average) 595 581 544 634 748 741 714 674 640 526 631 644 542 646 456 421 500 356

Lead production 

(tons/hr) 3.5 3.5 4.1 4.1 4.1 4.1 4.1 4.1 4.1 4.1 3.6 3.6 3.6 3.6 3.6 3.6 3.6 3.6

East Reverb

Charge Rate (tons/hr) 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15 35.15

Operating Temp. 

(hourly average F) 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+

Lead production 

(tons/hr) 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65 14.65

REFINING & 

ALLOYING OPS

Production (tons/hr)

Casting Operations

Production (tons/hr)

9 Kettles in various stages of the process

35 Ton 5am-6:15 am 213 tons from 7am thru 1pm 98 tons from 4:30 pm - 7:30 pm

66 tons from 9pm -

11pm
EPA114PRODUCTIONINFO.1 Thursday, August 5, 2010

5-6 am 6-7 am 7-8 am 8-9 am 9-10 am 10-11am 11-12pm 12-1 pm 1-2 pm 2-3 pm 3-4 pm

RAW MAT. 

PROCESSING test run from 7:23 - 10:26am

Raw Material Thoughput (tons/hr) 46.34 46.34 46.34 46.34 46.34 46.34 46.34 46.3

Face Velocity (feet/sec) 7.2 7.1 6.7

CHARGING 

MATERIAL HAND.

Through-put (tons/hr)

Face Velocity (feet/sec) 5.3 7.8 6

FEED DRYER:

Charge Rate (tons/hr) 31.18 31.18 31.18 31.18 31.18 31.18 31.18 31.18

Operating Temperature 

(F) 1340 1340 1340 1340 1340 1340 1340 1340

BLAST

Charge Rate (tons/hr) 4.77 4.77 4.77 4.77 4.77 4.77 4.77 4.77

Operating Temp 

(hourly average F) 549 675 606 576 384 500 635 623

Lead production 

(tons/hr) 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1

East Reverb

Charge Rate (tons/hr) 36.29 36.29 36.29 36.29 36.29 36.29 36.29 36.29

Operating Temp. 

(hourly average F) 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+

Lead production 

(tons/hr) 15.66 15.66 15.66 15.66 15.66 15.66 15.66 15.66

REFINING & 

ALLOYING OPS

Production (tons/hr)

Casting Operations

Production (tons/hr) Poured 97 tons from 6am-10:45am

Nine kettles in variou stages of the process
EPA114PRODUCTIONscrubber2010finalINFO.1 Tuesday, Sept. 14, 2010 WET SCRUBBER TEST

5-6 am 6-7 am 7-8 am 8-9 am 9-10 am 10-11am 11-12pm 12-1 pm 1-2 pm 2-3 pm 3-4 pm 4-5 pm 5-6 pm 6-7 pm 7-8 pm 8-9 pm 9-10 pm 10-11 pm

RAW MAT. 

PROCESSING

Raw Material Thoughput (tons/hr) 33.63 33.27 60.11 43.26 48.90 47.57 54.77 32.55 52.80 36.30 44.00 71.50 39.60 38.50 35.20 42.90

Face Velocity (feet/sec) 6.9 7.2 7.4 7.7 13.7

CHARGING 

MATERIAL HAND.

Through-put (tons/hr)

Face Velocity (feet/sec) 4.3 8.3 8.4 5.4 5.2

FEED DRYER:

Charge Rate (tons/hr) 40.7 40.9 41.05 41.2 40.6 40.7 40.6 40.9 41.6 40.1 41.5 41.1 41 39.5 41.2 41.5 41.3 41.5

Operating Temperature 

(F) 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340 1340

BLAST

Charge Rate (tons/hr) 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3

Operating Temp 

(hourly average) 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600

Lead production 

(Tons) 4.1 4.2 3.1 2 7.7 3 4.9 2.9 3.9 4 4.8 3.8 3.8 4.1 4.8 4.7 3.9 2.8

East Reverb

Charge Rate (tons/hr) 40.7 40.9 41.05 41.2 40.6 40.7 40.6 40.9 41.6 40.1 41.5 41.1 41 39.5 41.2 41.5 41.3 41.5

Operating Temp. 

(hourly average) 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+ 2400+

Lead production 

(Tons) 16.3 17.1 16.3 18.1 12.5 15.3 16.9 16.7 18.6 19.5 18.5 15.3 17.9 20 18 21.7 16.9 15.7

REFINING & 

ALLOYING OPS

Production (tons/hr)

Casting Operations

Production (tons/hr)

9 Kettles in various stages of the process

Poured 66 tons Poured 104 tons from 12:30pm -5:15pm Poured 103 tons from 6-9pm