Cover of Papers read before the Black Hills mining men's association at their regular monthly meetings, on the mining and metallurgy of Black Hills ores, together with a brief outline of the mining industry of the Black Hills, and some statistics relating to the output of gold from the district
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Papers read before the Black Hills mining men's association at their regular monthly meetings, on the mining and metallurgy of Black Hills ores, together with a brief outline of the mining industry of the Black Hills, and some statistics relating to the output of gold from the district

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135 pages 1904

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