 | United States. Congress. House. Committee on Appropriations - United States - 1926 - 478 pages
...mining, especially in relation to the safety of miners, the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations' are carried on, the use of explosives and electricity, the prevention of accidents, and other inquiries and technologic... | |
 | United States. Congress. House. Committee on Government Operations - Public works - 1928 - 502 pages
...especially in relation to the safety of miners and the appliances best adapted to prevent accidents, the possible improvement of conditions under which...substances, the use of explosives and electricity, the prevention of accidents, the prevention of waste, and the improvement of methods in the production... | |
 | United States. Congress. House Appropriations - 1930 - 1674 pages
...mining, especially in relation to the safety of miners, the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention of accidents, and other inquiries and technologic... | |
 | United States. Congress. House. Committee on Appropriations - 1930 - 366 pages
...mining, especially in relation to the safety of miners, the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention of accidents — And so forth. Your appropriation... | |
 | United States. Congress - Directories, Governmental - 1931 - 716 pages
...especially in relation to the safety of miners, the appliances best adapted to prevent accidents, and the possible improvement of conditions under which...mining operations are carried on; the treatment of ores arid other mineral substances; the use of explosives and electricity; the prevention of accidents;... | |
 | United States. Congress. House. Committee on Appropriations - 1935 - 1196 pages
...mining, especially in relation to the safety of miners, the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention of accidents, statistical studies and reports relating... | |
 | United States. Congress. House. Committee on Government Operations - 1935 - 152 pages
...investigations pertinent to the mining industry, especially in relation to the safety of miners and the possible improvement of conditions under which mining operations are carried on, the causes of mine explosions and other accidents, and the improvement of mine resue and first-aid methods... | |
 | United States. Congress. House. Committee on Appropriations - 1935 - 1198 pages
...mining, especially in relation to the safety of miners, the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention of accidents, statistical studies and reports relating... | |
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That it shall be the province and duty of said bureau and its director, under the direction of the Secretary of the Interior, to make diligent investigation of the methods of mining, especially in relation to the safety of miners and the appliances best... 
