So Accurate Group Inc.
Profiner Inc.
Marco Polo Precious Metals
Kelley Metals Corporation
Gannon & Scott Inc.
Bartley Crucibles & Refractories Inc.
Advanced Chemical Company
United Precious Metals Refining
Umicore Precious Metals
Pease & Curren Inc.
Oxford Assaying & Refining
LGS Refining
Jewelers Refining Group Inc.
Horizon Metals
General Refining Corporation
David H. Fell & Co. Inc.
Eric Precious Metal Refining
Roseco
Stuller
Ross Metals Corp.
Myron Toback Inc.
Hoover & Strong Inc.