Underlining indicates additions: Strike through indicates deletions.

Copper Supplement
No. 4

COMMODITY EXCHANGE, INC.

APPROVED ASSAYERS FOR COPPER

LEDOUX & COMPANY
359 Alfred Avenue
Teaneck, N.J. 07666
(Orders: (201) 837-7160)

ALEX STEWART (ASSAYERS) INC.

472 Westfield Avenue
Clark, New Jersey 07066
(Orders: (732) 827-0656)

AH KNIGHT

Eccleston Grange
Prescot Road

St Helens

Merseyside

WA10 3BQ

England

(Orders: (01744) 733757)

US LOCATION:

AH Knight North America, Ltd.
PO Box 3504

130 Tradd Street

Spartanburg, SC 29304-3504
(Orders: (864) 595-1627)

SGS Lakefield Research Limited
185 Concession

Lakefield, Ontario

Canada KOL 2HO

(Orders: (705) 652-2000)


Underlining indicates additions: Strike through indicates deletions.

Silver Supplement
No. 4

COMMODITY EXCHANGE, INC.

APPROVED ASSAYERS FOR SILVER

Ledoux & Company

359 Alfred Avenue
Teaneck, NJ 07666
(Orders: (201) 837-7160)

Alex Stewart (Assayers) Ltd.
Caddick Road

Knowsley Industrial Estate
Knowsley

Merseyside L34 9ER
England

(Orders: 0151 548 7777)

US LOCATION

Alex Stewart (Assayers) Inc.
472 Westfield Avenue
Clark, NJ 07066

(Orders: (732) 827-0656)

AH Knight

Eccleston Grange
Prescot Road

St Helens

Merseyside

WA10 3BQ

England

(Orders: (01744) 733757)

US LOCATION:

AH Knight North America, Ltd.

PO Box 3504

130 Tradd Street
Spartanburg, SC 29304-3504
(Orders: (864) 595-1627)

SGS Lakefield Research Limited
185 Concession

Lakefield, Ontario
Canada KOL 2HO

(Orders: (705) 652-2000)


November 23, 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. Notification of an Approved Amendment to Supplement
No. 3, “Approved Assayers for Gold” of the Gold Futures Contract,
Supplement No. 4, “Approved Assayers for Silver” of the Silver Futures
Contract and Supplement No. 4, “Approved Assayers for Copper” of the
Grade 1 Copper Futures Contract. NYMEX Submission 05-212.

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. 3, “Approved Assayers for Gold” of the Gold Futures Contract,
Supplement No. 4, “Approved Assayers for Silver’ of the Silver Futures Contract and
Supplement No. 4, “Approved Assayers for Copper” of the Grade 1 Copper Futures Contract to
be implemented effective Thursday, December 1, 2005. The approved amendments add SGS
Lakefield Research Limited, Lakefield, Ontario, Canada as an Approved Assayer for the
Exchange’s Gold, Silver and Copper Futures Contracts.

Pursuant to Section 5c(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. These approved amendments will go into effect on Thursday,
December 1, 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

ec: Christopher K. Bowen, Esq.


Attachment: Approved Amendments to Supplement No. 3, “Approved Assayers for Gold” of
the Gold Futures Contract, Supplement No. 4, “Approved Assayers for Silver” of the Silver
Futures Contract and Supplement No. 4, “Approved Assayers for Copper” of the Grade 1 Copper
Futures Contract.


Underlining indicates additions: Strike through indicates deletions.

Gold Supplement
No. 3
COMMODITY EXCHANGE, INC.
APPROVED ASSAYERS FOR GOLD
Ledoux & Company SGS Lakefield Research Limited
359 Alfred Avenue 185 Concession
Teaneck, NJ 07666 Lakefield, Ontario
(Orders: (201) 837-7160) Canada KOL 2HO

(Orders: (705) 652-2000)
Alex Stewart (Assayers) Ltd.

Caddick Road

Knowsley Industrial Estate
Knowsley

Merseyside L34 9ER
England

(Orders: 0151 548 7777)

US LOCATION

Alex Stewart (Assayers) Inc.
472 Westfield Avenue
Clark, NJ 07066

(Orders: (732) 827-0656)

AH Knight
Eccleston Grange
Prescot Road

St Helens

Merseyside

WA10 3BQ

England

(Orders: (01744) 733757)

US LOCATION:

AH Knight North America, Ltd.
PO Box 3504

130 Tradd Street

Spartanburg, SC 29304-3504
(Orders: (864) 595-1627)