Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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Side
... Temperature and humid- Carbon monoxide in metal ity .. mines_ Burning materials__ Combustible rock minerals_ Explosives-- Miscellaneous gases in metal mines__ Detection of gases- gases . Conclusions . Sampling air_ Types of detectors ...
... Temperature and humid- Carbon monoxide in metal ity .. mines_ Burning materials__ Combustible rock minerals_ Explosives-- Miscellaneous gases in metal mines__ Detection of gases- gases . Conclusions . Sampling air_ Types of detectors ...
Side 1
... temperature gases con- taining a mixture of gases of sulphur ( sulphur dioxide , hydrogen sulphide , and possibly sulphur trioxide ) , carbon dioxide , and nitro- gen are found at the working faces ; in some high - sulphide metal mines ...
... temperature gases con- taining a mixture of gases of sulphur ( sulphur dioxide , hydrogen sulphide , and possibly sulphur trioxide ) , carbon dioxide , and nitro- gen are found at the working faces ; in some high - sulphide metal mines ...
Side 2
... temperatures due either to the natural heat of surrounding strata , to heated rock from sealed or partly sealed mine fires , or to some form of oxidation or other chemical reaction . Not infrequently the gas condition or the high- ...
... temperatures due either to the natural heat of surrounding strata , to heated rock from sealed or partly sealed mine fires , or to some form of oxidation or other chemical reaction . Not infrequently the gas condition or the high- ...
Side 3
... temperature reactions between the timber in the fire area and the water introduced to fight the fire . Methane has been found in limestone mines or other similar noncoal - mining opera- tions in sedimentary formations . Hydrogen has ...
... temperature reactions between the timber in the fire area and the water introduced to fight the fire . Methane has been found in limestone mines or other similar noncoal - mining opera- tions in sedimentary formations . Hydrogen has ...
Side 5
... temperature is high . The amount of sulphur dioxide present as determined by odor was too small to be determined analytically . A dry - bulb temperature of 99 ° and a wet - bulb temper- ature of 79 ° were recorded . The excessive heat ...
... temperature is high . The amount of sulphur dioxide present as determined by odor was too small to be determined analytically . A dry - bulb temperature of 99 ° and a wet - bulb temper- ature of 79 ° were recorded . The excessive heat ...
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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.