Miners' Circular, Utgaver 2-29Bureau of Mines, 1911 |
Innhold
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Vanlige uttrykk og setninger
A. H. Fay accidents from falls artificial respiration black blasting powder black damp brattice breathing apparatus Bureau of Mines burning carbide lamp carbon dioxide carbon monoxide Carl Meissner carry cars cartridge cause cent charge Clarence Hall coal dust coal mines cubic feet dangerous drill hole dynamite electric detonator entry explosives tested prior face falls of roof figs FIGURE fire boss fire damp first-aid flame foreman fuse G. A. Burrell G. S. Rice gases gauze Geological Survey Bulletin H. H. Clark Hall and S. P. heat ignited inches inflammable injured J. W. Paul killed loose methane method mine-rescue miner mixture nitroglycerin open light oxygen patient permissible explosives Permissible explosives tested precautions prevent properly props quantity Reprint of United ribs S. P. Howell safety lamp shock shot firer side splints squibs stemming stretcher tamped TECHNICAL PAPER timber trip trolley wire United States Geological ventilation W. O. Snelling