Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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Side
... district , Colorado .. Cripple Creek district , Colo- rado_ . Rock - strata gases- Utah ... Other localities . Gases in timbered mines .. Properties of gases- Nitrogen ____ Carbon dioxide . Oxygen .. Methane Hydrogen sulphide_ Sulphur ...
... district , Colorado .. Cripple Creek district , Colo- rado_ . Rock - strata gases- Utah ... Other localities . Gases in timbered mines .. Properties of gases- Nitrogen ____ Carbon dioxide . Oxygen .. Methane Hydrogen sulphide_ Sulphur ...
Side 1
... engineer , safety division , U. S. Bureau of Mines . District mining engineer , U. S. Bureau of Mines , Denver , Colo . 1 ings where metal - mine blasting is done and the Metal-mine and coal-mine mospheres Gases possible in metal mines_.
... engineer , safety division , U. S. Bureau of Mines . District mining engineer , U. S. Bureau of Mines , Denver , Colo . 1 ings where metal - mine blasting is done and the Metal-mine and coal-mine mospheres Gases possible in metal mines_.
Side 2
... district were being un- watered . In both these districts the strata are distinctly igneous , no shale or other carbonaceous formations being present . The methane undoubtedly was formed by slow decomposition of timber under water ...
... district were being un- watered . In both these districts the strata are distinctly igneous , no shale or other carbonaceous formations being present . The methane undoubtedly was formed by slow decomposition of timber under water ...
Side 3
... district of Missouri and in the newer Picher ( Okla . ) district as well ; in fact , methane ignitions have occurred in all three States comprising the tri - State lead - zine district . Methane has been found also in at least one iron ...
... district of Missouri and in the newer Picher ( Okla . ) district as well ; in fact , methane ignitions have occurred in all three States comprising the tri - State lead - zine district . Methane has been found also in at least one iron ...
Side 5
... DISTRICT , COLORADO Recently an occurrence of irrespirable gases in a metal mine in the Rico district , southwestern Colorado , was investigated by the United States Bureau of Mines . Irrespirable ... districts , the Rico district, Colorado.
... DISTRICT , COLORADO Recently an occurrence of irrespirable gases in a metal mine in the Rico district , southwestern Colorado , was investigated by the United States Bureau of Mines . Irrespirable ... districts , the Rico district, Colorado.
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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.