Timbering of Metal Mines
Description:
Report issued by the Bureau of Mines over the importance of timbering in metal mines. The reasons and methods for timbering are presented and discussed. This report includes illustrations, and photographs.
Date:
June 1923
Creator:
Holbrook, Elmer Allen; Ageton, Richard V. & Tufft, Harry E.
Item Type:
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Report
Partner:
UNT Libraries Government Documents Department