 | United States. Congress. House. Committee on Appropriations - 1936 - 1682 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 - 1936 - 1226 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. Senate. Committee on Finance - United States - 1939 - 1104 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. Senate. Committee on Finance - United States - 1942 - 1032 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...operations are carried on, the use of explosives and Pod, pp. 653,684,752, 827. 55 STAT.] PUBLIC LAWS— CH. 259— JUNE 28, 1941 [55 STAT. Vehicles. Personal... | |
 | United States. Congress. House. Committee on Appropriations - 1938 - 1658 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 - 1938 - 1656 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. Appropriations - 1938 - 1694 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 - 1939 - 1926 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... | |
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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,... 
