892 resultados para salt mine


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For 1915-1916, Sumner Smith continued the reporting of mining information in two monographs entitled: The mining industry in the Territory of Alaska during the calendar year 1915[-1916], issued as Bureau of Mines bulletins 142 and 153. At the same time, a Territorial Mine Inspector had also been appointed in 1915, and reports from this office were issued from 1915-1925/26 as: Report of the Territorial Mine Inspector to the Goveror of Alaska, etc.

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Microfiche.

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Prepared for National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency under grant S-800994,program element IBA024, ROAP/Task no. 21 AKQ/12.

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Includes index.

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Type-written letter: "To all employees" from J. F. Welborn, president of the Colorado Fuel and Iron Company, written after the findings of the Colorado Industrial Commission (mounted at end)