 The ultimate effect of this extreme heat on the miners' constitution is not so easily noted. The mine levels differ so materially in temperature, and the assigned station of a miner is so frequently changed from one cause and another, that it is impossible...  Transactions of the American Institute of Mining, Metallurgical and ... - Page 51by American Institute of Mining, Metallurgical, and Petroleum Engineers, American Institute of Mining Engineers - 1911Full view - About this book
 | Nevada Bureau of Mines - Mines and mineral resources - 1904 - 1040 pages
...Foster and JS Haldane, p. 151 (1905). where the air. is fairly dry and in motion, men can work well at a dry-bulb temperature of 90°, or even 100', and...: "The ultimate effect of this extreme heat on the niinern' constitution is not so easily noted. The mine levels differ so materially in temperature,... | |
 | Geology - 1904 - 530 pages
...Foster and JS Haldane, p. 151 (1905). where the air is fairly dry and in motion, men can work well at a dry-bulb temperature of 90°, or even 100°, and...higher temperatures are not oppressive." Eliot Lord " discusses the permanent effect of high heat upon the system, and reaches the following conclusion... | |
 | Clement le Neve Foster, John Scott Haldane - Air - 1905 - 252 pages
...ease and comfort. In collieries where the air is fairly dry and in motion, men can work quite well at a dry-bulb temperature of 90°, or even 100°; and...dry air much higher temperatures are not oppressive. Men working rock-drills driven by compressed air have the great advantage, if the mine is hot, of being... | |
 | Geological Survey (U.S.) - Geology - 1883 - 492 pages
...the complexion is clear, if somewhat sallow.2 The ultimate effect of this extreme heat on the miner's constitution is not so easily noted. The mine levels...differ so materially in temperature, and the assigned station of a miner is so frequently changed from one cause and another, that it is impossible to obtain... | |
 | Mineral industries - 1909 - 1234 pages
...ease and comfort. In collieries ■where the air is fairly dry and in motion, men can work well at a dry-bulb temperature of 90°, or even 100°, and...differ so materially in temperature, and the assigned station of a miner is so frequently changed from one cause and another, that it is impossible to obtain... | |
 | Mineral industries - 1909 - 778 pages
...Foster and JS Haldane, p. lol (1905;. •where the air is fairly dry and in motion, men can work well at a dry-bulb temperature of 90°, or even 100°, and...differ so materially in temperature, and the assigned station of a miner is so frequently changed from one cause and another, that it is impossible to obtain... | |
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