 | George Cyrus Thorpe - Executive departments - 1925 - 1124 pages
...with the investigation of the methods of mining, especially in relation to the safety of miners and the appliances best adapted to prevent accidents,...under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives and electricity, the prevention... | |
 | United States. Congress. House. Committee on Government Operations - Public works - 1928 - 502 pages
...with the investigation of the methods of mining, especially in relation to the safety of miners and the appliances best adapted to prevent accidents,...under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives and electricity, the prevention... | |
 | United States. Congress. House. Committee on Government Operations - Public works - 1928 - 512 pages
...with the investigation of the methods of mining, especially in relation to the safety of miners and the appliances best adapted to prevent accidents,...under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives and electricity, the prevention... | |
 | United States. Congress. House. Committee on Appropriations - 1930 - 366 pages
...accidents. For investigations as to the causes of mine explosions, causes of falls of roof and coal, methods of mining, especially in relation to the safety...and electricity, the prevention of accidents — And so forth. Your appropriation for 1931 was $438,640, while your estimate for 1932 is $435,820, a decrease... | |
 | United States. Bureau of the Budget - Budget - 1931 - 1016 pages
...accidents: For investigations as to the causes of mine explosions, causes of falls of roof and coal, methods of mining, especially in relation to the safety...explosives and electricity, the prevention of accidents, alatixtical studies and reports relating to mine accidents, and other inquiries and technologic investigations... | |
 | United States. Bureau of the Budget - Budget - 1932 - 1036 pages
...investigations as to the causes of mine explosions, causes oí (alls of root and coal, methods oí mining, especially in relation to the safety of miners,...explosives and electricity, the prevention of accidents, statistical studies and reports relating to mine accidents, and other inquiries and technologic investigations... | |
 | United States. Congress. House. Committee on Appropriations - 1935 - 1198 pages
...first-aid methods; investigations as to the causes of mine explosions, causes of falls of roof and coal, methods of mining, especially in relation to the safety...explosives and electricity, the prevention of accidents, statistical studies and reports relating to mine accidents, and other inquiries and technologic investigations... | |
 | United States. Congress. House. Committee on Appropriations - 1935 - 1196 pages
...first-aid methods; investigations as to the causes of mine explosions, causes of falls of roof and coal, methods of mining, especially in relation to the safety...explosives and electricity, the prevention of accidents, statistical studies and reports relating to mine accidents, and other inquiries and technologic investigations... | |
 | 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... | |
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Interior, to make diligent investigation of the methods of mining, especially in relation to the safety of miners, and the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on,... 
