Approved Amendment. Underlining indicates additions.

COMMODITY EXCHANGE, INC.
COPPER BRANDS AND MARKINGS
PAGE 3
GRADE 1 CATHODE COPPER (Cont.)
PRODUCER COMPUTER CODE BRAND NAME (1)
Phelps Dodge Corporation-. P*D
SANTA RITA
PDSS
BCCC BCCC ("BURRO CHIEF")
PDMI PDMI
CBCC CBCC
CMMC CMMC ER
TWIN CTB
PDGO PD*GO
Philippine Associated Smelting & Refining Corp.-- PSAR PASAR
Sociedad Contractual Minera E] Abra------------------ABRA ABRA
Sociedad Minera Cerro Verde S.A.-: ~-- SMCV SMCV
Southern Peru Copper Corp.---------------------------- SPCC SPCC-ILO
Southern Peru Copper Corporation/
Southern Peru Copper Ltd.------------------------------ SPLX SPCC-SXEW
Sumitomo Metal Mining Co. Ltd.---------------------- SUMI SUMIKO
White Pine Copper Refinery, Inc. WPCR White Pine Copper
Zambia Consolidated Copper Mines
Mufulira Copper Refinin, MCM
Nkana Copper Refinery--. REC

qd) Copper Cathodes do not bear a brand marking. Accordingly, a written declaration of
brand pursuant to Rule 11.16(f) of the Comex By-Laws must accompany all deliveries.

*No Longer Produced


Approved Amendment. Underlining indicates additions.

COMMODITY EXCHANGE, INC.
COPPER BRANDS AND MARKINGS
PAGE 2
GRADE 1 CATHODE COPPER (Cont.)
PRODUCER COMPUTER CODE BRAND NAME (1)
Dowa Mining Co. Ltd.----------------------------------- DOWA DOWA
Falconbridge Limited, Kidd Creek Division---------- FKA FKA
Huttenwerke Kayser AG-------------------------------- HKAG HK
INCO Limited----------------------------0--o--ceneeenoee ORCO ORC
Kennecott Utah Copper Corporation--------------- KUCU KUC
LG-Nikko Copper Inc. ---------------------------------- ONSN ONSAN
Metallo-Chimique International N.V.------------------ SME SME
Minera El Tesoro ---------------------------------------- MELT MET
Minera Escondida Limitada ----------------------------- ESOX ESOX
Mitsubishi Materials Corporation----------------------- MTSB MITSUBISHI
Mitsui Mining & Smelting Co. Ltd.------------------- MITS MITSUI
TAMA TAMANO
Nippon Mining & Metals Co., Ltd--------------------- HM HM
SR SR
Noranda Inc. ---------------------------------------------- NORA NORANDA
Norddeutsche Affinerie AG----------------------------- NAEN NA-ESN
Onahama Smelting & Refining CO. Ltd.------------- OSR OSR


TL 26 PHU 42

OFC. CF The SECRETARIAT
July 26, 2005

BY EMAIL AND AIR BORNE EXPRESS
Office of the Secretariat

Commodity Futures Trading Commission
Three Lafayette Centre

1155 21st Street, N.W.

Washington, D.C. 20581

Re: Rule Certification. NYMEX Submission 05-127: Notification of Approved
Amendment to Supplement No. 1, “Official List of Approved Brands and
Markings” of the Grade 1 Copper Futures Contract.

Dear CFTC Commissioners:

The New York Mercantile Exchange, Inc. ("NYMEX" or the "Exchange") is notifying the
Commodity Futures Trading Commission (“CFTC” or “Commission”) of an approved
amendment to Supplement No. 1, “Official List of Approved Brands and Markings” of the Grade
1 Copper Futures Contract to be implemented effective Friday, July 29, 2005. The approved
amendment adds the copper brand “RT” produced by Corporacion Nacional del Cobre de Chile
(“CODELCO”) as acceptable for delivery against the Grade 1 Copper Futures Contract.

CODELCO is wholly owned by the Chilean State and is the world’s largest copper producer.
Other CODELCO brands approved for delivery against the COMEX Grade 1 Copper Futures
Contract are “Chuqui-P”, “cCc” and “cCc SBL,” produced at the Chuquicamata complex; “AE”
and “AE SX-EW” produced at the company’s Salvador division; “ABRA” produced by joint
venture with Phelps Dodge at El Abra; and “ENM” produced at the Las Ventanas smelter and
refinery.

Pursuant to Section Sc(c) of the Commodity Exchange Act (“Act”) and CFTC Rule 40.6, the
Exchange hereby certifies that the attached rule amendment complies with the Act, including
regulations under the Act. This approved amendment will go into effect on Friday, July 29,
2005.


Should you have any questions concerning the above, please contact Albert J. Getz at (212) 299-
2608.

Very truly yours,

Robert A. Levin
Senior Vice President - Research

cc: Christopher Bowen

Attachment: Approved Amendment to Supplement No. 1, “Official List of Approved Brands
and Markings” of the Grade 1 Copper Futures Contract.


Approved Amendment. Underlining indicates additions.

Copper Supplement

No. 1
COMMODITY EXCHANGE, INC.
GRADE 1 COPPER CATHODES

OFFICIAL LIST OF APPROVED BRANDS AND MARKINGS

COMPUTER CODE BRAND NAME(1)

ASARCO Incorporated---------------------------------- ATR ATR

ASARCO Incorporated Ray Unit -

ASARCO RAY GRADE 1

Atlantic Copper S.A. ------------------------------------- FMS FMS
BHP Billiton Tintaya S.A. ------------------------------- TINT TINTAYA
BHP Copper Inc.------------------------------------------- PINT *PINTO
BHP Copper Inc.------------------------------------------- -BHPC BHP Copper
BHP Copper Inc.------------------------------------------- BHPX BHP Copper/SKEW
BHP Copper Inc.------------------------------------------- -BHPP BHP Copper/Pinto
Cobre de Mexico, S.A.---------------------------------- CDM CDM
Codelco-Chile---Corporacion Nacional del----------- AE AE
Cobre de Chile ccc CCC
ASXW AE SX-EW
CSBL cCe SBL
CHUI CHUQUI-P
NAMI ENM
RT RT
Compania Minera Cerro Colorado Ltda-------------- CMCC CMCC
Compania Minera Dona Ines de Collahuasi SCM----COLL COLL
Compania Minera Falconbridge Lomas Bayas ------- MFLB LBF

Compania Minera Zaldivar---- ZALDIVAR