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Primary Metals

    Name
      Primary Industry
City
    AFFCO Inc. Anaconda
Ferrous Metal Foundries
    American Chemet Corporation East Helena
Secondary Smelting, Refining, and Alloying of Copper
    Northwest Parts & Rigging Co I Kalispell
Alumina and Aluminum Production and Processing
    Stillwater Mining Co. Nye
Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)
    Timberline Tool & Casting Whitefish
Aluminum Die-Casting Foundries