A
Primary Smelting and Refining of Nonferrous Metals, Except Copper and Aluminum
Base Metal Smelters and Refiners
Precious Metals Smelters and Refiners
Gold Eagle Precious Metals Exchange
Primary Nonferrous Metals, Nec
Primary Smelting and Refining of Nonferrous Material
Silicon Refining (Primary, Over 99% Pure)