Approved Assayers

For more information or to obtain an application to become an Exchange Approved Assayer, Approved Brand, Approved Carrier, Licensed Depository/Warehouse, or Licensed Weighmaster, please contact Terry Gehring +1 312 435 3644 For other product information, please contact Joann Arena +1 212 299 2356


Canada, Ontario
SGS Lakefield Research Limited
185 Concession
Lakefield, Ontario K0L 2H0
phone: +1 705 652 2000
UK, Merseyside
Alfred H. Knight, International Ltd.
Eccleston Grange, Prescot Rd.
St. Helens, Merseyside, WA10 3BQ
phone: +44 17 4473 3757
USA, New Jersey
Alex Stewart (Assayers) Inc.
314 Rte. 22 West, Suite C
Green Brook, NJ 08812
phone: +1 732 529 4408
fax: +1 732 827 0567
Ledoux & Company
359 Alfred Avenue
Teaneck, New Jersey 07666
phone: +1 201 837 7160
fax: +1 201 837 1235
USA, South Carolina
Alfred H. Knight North America Ltd.
P.O. Box 3504, 130 Tradd Street
Spartanburg, South Carolina 29304
phone: +1 864 595 1903
fax: +1 864 595 1627



Futures & Options Trading

As the world's leading and most diverse derivatives marketplace, CME Group is where the world comes to manage risk. CME Group exchanges offer the widest range of global benchmark products across all major asset classes, including futures and options based on interest rates, equity indexes, foreign exchange, energy, agricultural commodities, metals, weather and real estate. CME Group brings buyers and sellers together through the CME Globex electronic trading platform and trading facilities in New York and Chicago. CME Group also operates CME Clearing, one of the largest central counterparty clearing services in the world, which provides clearing and settlement services for exchange-traded contracts, as well as for over-the-counter derivatives transactions through CME ClearPort.

Idea Exchange

Idea Exchange is your direct link to the product managers, marketers, and the development teams who create and will allow you to review functionality, participate in focus and provide feedback on upcoming Web initiatives

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Contact Us

CME Group/Chicago HQ:
Local: +1 312 930 1000
Toll Free: +1 866 716 7274

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CME Group is the world's leading and most diverse derivatives marketplace. The company is comprised of four Designated Contract Markets (DCMs). Further information on each exchange's rules and product listings can be found by clicking on the links to CME, CBOT, NYMEX, and COMEX.