Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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Side 11
... poisonous gases , including carbon monoxide . PROPERTIES OF GASES NITROGEN Pure nitrogen gas is a hazard to life ; it will suffocate a human being in much the same way that water does . When mixed with oxygen in the approximate ...
... poisonous gases , including carbon monoxide . PROPERTIES OF GASES NITROGEN Pure nitrogen gas is a hazard to life ; it will suffocate a human being in much the same way that water does . When mixed with oxygen in the approximate ...
Side 12
... poisonous gases known ; for- tunately only traces are ordinarily found in mine operation . In some respects it is more poisonous than hydrogen cyanide . In small proportions its odor of spoiled eggs is noticeable , but in heavy con ...
... poisonous gases known ; for- tunately only traces are ordinarily found in mine operation . In some respects it is more poisonous than hydrogen cyanide . In small proportions its odor of spoiled eggs is noticeable , but in heavy con ...
Side 20
... poisonous gases in greater concentrations than the gas mask can handle safely . A candle should be used in testing for oxygen only when the metal- mine atmosphere is known to contain no explosive gases . The type N gas mask protects ...
... poisonous gases in greater concentrations than the gas mask can handle safely . A candle should be used in testing for oxygen only when the metal- mine atmosphere is known to contain no explosive gases . The type N gas mask protects ...
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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.