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Safe Mechanical Equipment for Use in Shaft Sinking
Technical paper issued by the Bureau of Mines over shaft sinking safety. Safe mechanical equipment and procedures are discussed. This paper includes illustrations.
Date:
May 1922
Creator:
Kudlich, R. H.
System:
The UNT Digital Library
Leaching Nonsulphide Copper Ores with Sulphur Dioxide
Report issued by the Bureau of Mines discussing the sulfurous acid leaching of the Southwest experiment station. Operations and analyses of the experiment station are presented. This report includes tables, illustrations, and photographs.
Date:
May 1923
Creator:
Van Barneveld, Charles E. & Leaver, Edmund S.
System:
The UNT Digital Library