David H. Fell & Co. Inc
Accurate assay and refining services
dhfco.com

Eric Precious Metal Refining
Refiners Precious Metals
ericpmr.com

The National Refining Group Inc.
Precious metals refining, polish sweeps, scrap melt, karat melting, stone recovery.
visitnational.com

Wiliams Gold & Silver LLC
Metals Refining and Consulting
williamsgoldandsilver.com