Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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Resultat 1-5 av 6
Side 2
... produced depends upon the ores and other materials involved in the fire region . Gases from metal - mine fires include hydrogen sulphide , sulphur diox- ide , carbon monoxide , carbon dioxide , methane , and hydrogen , as well as oxides ...
... produced depends upon the ores and other materials involved in the fire region . Gases from metal - mine fires include hydrogen sulphide , sulphur diox- ide , carbon monoxide , carbon dioxide , methane , and hydrogen , as well as oxides ...
Side 5
... produced are a result of the action of atmospheric air and mine water upon the sulphides and carbonates in the fissured rock . In this particular mine there was no record of any sudden liberation of large amounts of gases , but gases ...
... produced are a result of the action of atmospheric air and mine water upon the sulphides and carbonates in the fissured rock . In this particular mine there was no record of any sudden liberation of large amounts of gases , but gases ...
Side 7
... produced in the carboys . The action of water and air upon the rocks for two or three days produced appreciable percentages of carbon dioxide and decreased the oxygen content of the air . After several months all of the oxygen in the ...
... produced in the carboys . The action of water and air upon the rocks for two or three days produced appreciable percentages of carbon dioxide and decreased the oxygen content of the air . After several months all of the oxygen in the ...
Side 11
... produces shortness of breath or panting ; and 5 to 6 per cent soon exhausts him so that he can not continue work effectively . The Bureau of Mines recommends that mine air be considered unfit for men to breathe if it contains more than ...
... produces shortness of breath or panting ; and 5 to 6 per cent soon exhausts him so that he can not continue work effectively . The Bureau of Mines recommends that mine air be considered unfit for men to breathe if it contains more than ...
Side 12
... produced by long exposure to concentrations as low as 0.005 per cent ; immediate collapse usually is the result when one is exposed to 0.06 to 0.1 per cent of the gas ; and death ensues quickly when one is exposed to more than 0.1 per ...
... produced by long exposure to concentrations as low as 0.005 per cent ; immediate collapse usually is the result when one is exposed to 0.06 to 0.1 per cent of the gas ; and death ensues quickly when one is exposed to more than 0.1 per ...
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Vanlige uttrykk og setninger
activated iodine pentoxide adequate amounts asphyxial asphyxial gases atmosphere Bull Bureau of Mines burning candle carbide lamp carbon dioxide carbon monoxide cent of carbon cent of oxygen Circ circulation of air coal mines combustible material decidedly dangerous deficient in oxygen dioxide and nitrogen dry-bulb temperatures efficiency electric arc explosive gas extinguished fire hazards flame safety lamp found in metal gas mask GASES FOUND gases high GASES IN METAL Gilpin County Harrington high in carbon hydrogen sulphide ignitions of methane inflammable inhaled Investigations killed metal mines metal-mine blasting metal-mine fires miners numerous open light oxides of nitrogen oxygen breathing apparatus oxygen content palladium chloride percentage of carbon poisonous gases PRECAUTIONS AGAINST GASES Pyrotannic Acid Method quantities relative humidity Rept respiratory protection result rock Rock-Strata Gases Sayers SCOTT TURNER shallow shafts strata sulphur dioxide sulphur gases Tech tested tion tunnel type N gas underground United States Bureau unventilated winze workers Yant
Populære avsnitt
Side 5 - ... are a result of the action of atmospheric air and mine water upon the sulphides and carbonates in the fissured rock.
Side 9 - Some of the heaviest losses of life in metal-mine fires have resulted from the burning of less than a railroad freight car or only a few cords of timber.