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Primary Smelting and Refining of Nonferrous Metals, Except Copper and Aluminum (545)

Antifriction Bearing Metals, Lead-Base (6)

   Better Built Street Rod Parts

   F & C Professional Aluminum

   Marvin Zeman Enterprise

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Base Metal Smelters and Refiners (13)

   Alumitech Inc

   Federal Refining Inc

   Automation Software

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Beryllium Manufacturers (9)

   Materion Brush Inc

   Brush Wellman Inc

   Copper Beryllium Alloys

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Cobalt Refining (Primary) (4)

   Alloy Ball & Seat CO

   Umicore USA Inc

   Umicore Usa Inc

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Gold Refining (Primary) (55)

   Southeastern Refining CO

   Gold & Silver Refinery

   Ads Gold Inc

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Lead Smelting and Refining (Primary) (5)

   Mayer Alloys Corp

   Meister Bullets & Ammunition C

   Garfield Refining CO

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Lead and Zinc (7)

   Horsehead Corp

   Dnsc-Df

   Mayco Industries, Inc

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Magnesium Refining (Primary) (4)

   Magretech Inc

   Us Magnesium LLC

   Engineering Value LLC

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Platinum Group Metal Refining (Primary) (7)

   T M P Refining Corporation

   Southern Metal Resources

   Cyclegreen

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Precious Metals Smelters and Refiners (248)

   Gerace Precious Metal Corporation 1

   Mark Refining Co

   Umicore Precious Metals Nj, LLC

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Primary Nonferrous Metals, Nec (114)

   Refiners House

   Pam Refiners

   Cambridge-Lee Industries Inc

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Primary Smelting and Refining of Nonferrous Material (13)

   Aquamira Technologies Inc

   Purosil

   Vennerbeck Stern-Leach

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Silicon Manufacturers (10)

   G E Silicones

   Limtech Inc

   BioEmbedded Research LLC

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Silicon Refining (Primary, Over 99% Pure) (9)

   Globe Metallurgical Inc

   Virginia Semiconductor Inc

   21-Century Silicon, Inc

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Silicon and Chromium (5)

   Rec Solar Grade Silicon LLC

   Rec Silicon Inc

   R I Lampus CO

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Silicon, Pure (14)

   Sintegra Inc

   Rsi Silicon Products LLC

   Silica Engineering Group

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Silver Refining (Primary) (4)

   Oklahoma Industrial Silver Inc

   N T & H Enterprises Inc

   Umicore Technical Materials

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Tantalum Refining (6)

   H C Starck Inc

   H C Starck Inc

   H C Starck Inc

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Titanium Metal, Sponge and Granules (5)

   Hamilton Rti Inc

   Timet

   Saes Smart Materials Inc

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Zinc Refining (Primary), Including Slabs & Dust (7)

   Purity Zinc Metals LLC

   Zinifex Clarksville Zinc Plant

   Arecibo Diecast, Inc

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