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  1. 1
    Mining methods and equipment illustrated /
    by Stout, Koehler S.
    Published 1967
    Book
  2. 2
    Mining codes of Montana (annotated) /
    Published 1980
    Book
  3. 3
    Mining methods & equipment /
    by Stout, Koehler S.
    Published 1980
    Book
  4. 4
    Practical guide for prospectors and small-mine operators in Montana /
    by Stout, Koehler S.
    Published 1955
    Book
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