 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,...  Reports of the Department of the Interior - Página 385de United States. Department of the Interior - 1912Visualização completa - Sobre este livro
 | L. Bonnefoux - 1864 - 778 páginas
...possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives...may direct, with the recommendations of such bureau. 26 COINAGE LAWS OF THE UNITED STATES. SEC- 3- That tn.e Secretary of the Interior shall provide clerks,... | |
 | United States - 1917 - 706 páginas
...prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention...inquiries and technologic investigations pertinent to the mining industry, and including all equipment, supplies, and expenses of travel and subsistence,... | |
 | United States. Department of the Treasury - 1911 - 498 páginas
...possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives...investigations, and information obtained as the Secretary o£ said department may direct, with the recommendations of such bureau. Countries. Monetary unit.... | |
 | 1918 - 892 páginas
...possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives...the prevention of accidents, and other inquiries and technological investigations pertinent to such industries. He also has charge of tests and analyses... | |
 | 1911 - 644 páginas
...prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention...inquiries and technologic investigations pertinent to the mining industry, $360,000 ; for the investigation, analyzing and testing of the coals, lignites... | |
 | United States. Dept. of the Interior - 1910 - 130 páginas
...possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives...pertinent to said industries, and from time to time to make public reports of the work, investigations, and information obtained as the secretary of said... | |
 | 1910 - 1240 páginas
...poerible Improvement of conditions under which mining operations are carried on, the treatment of ores hall be levied, collected, and paid therein upon articles,...countries other than the United States, the Internal -re tin e to time make such public reports of the work. Investigations and information obtained as the... | |
 | United States - 1910 - 886 páginas
...possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives...inquiries and technologic investigations pertinent Pott, p. юз. to said industries, and from time to time make such public reporta of the work, investigations,... | |
 | United States. President - 1911 - 1346 páginas
...possible improvement of conditions under which mining operations are carried on, tne treatment of ores and other mineral substances, the use of explosives...the work, investigations, and information obtained aa the Secretary of said department may direct, with the recommendations of such bureau. SEC. 3. That... | |
 | 1911 - 646 páginas
...possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives...pertinent to said industries, and from time to time to make public reports of the work, investigations, and Information obtained as the secretary of said... | |
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