Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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U. S. DEPARTMENT OF COMMERCE BUREAU OF MINES GASES THAT OCCUR IN METAL MINES BULLETIN 347 ARTES 1817 SCIENTIA VERITAS LIBRARY OF THE UNIVERSITY OF MICHIGAN. Front Cover.
U. S. DEPARTMENT OF COMMERCE BUREAU OF MINES GASES THAT OCCUR IN METAL MINES BULLETIN 347 ARTES 1817 SCIENTIA VERITAS LIBRARY OF THE UNIVERSITY OF MICHIGAN. Front Cover.
Side
U.S. DEPARTMENT OF COMMERCE R. P. LAMONT , Secretary BUREAU OF MINES SCOTT TURNER , Director Bulletin 347 GASES THAT OCCUR IN METAL MINES BY D. HARRINGTON and E. H. DENNY DEPARTMENT UNITED OF STATES COMMERCE OF AMERICA UNITED STATES ...
U.S. DEPARTMENT OF COMMERCE R. P. LAMONT , Secretary BUREAU OF MINES SCOTT TURNER , Director Bulletin 347 GASES THAT OCCUR IN METAL MINES BY D. HARRINGTON and E. H. DENNY DEPARTMENT UNITED OF STATES COMMERCE OF AMERICA UNITED STATES ...
Side 1
... mines of the world contain by far a greater variety of gases than do the coal mines . Often the gases in metal mines ... Bureau of Mines . District mining engineer , U. S. Bureau of Mines , Denver , Colo . 1 ings where metal - mine blasting ...
... mines of the world contain by far a greater variety of gases than do the coal mines . Often the gases in metal mines ... Bureau of Mines . District mining engineer , U. S. Bureau of Mines , Denver , Colo . 1 ings where metal - mine blasting ...
Side 3
... mines in New York and in Louisi- ana . Disastrous explosions have been started by ignitions of gas in asphalt mines ... Bureau of Mines , 1921 , 3 pp . Pickard , B. O. , and Gardner , E. D. , Methane in California Gold Mines : Rept . of ...
... mines in New York and in Louisi- ana . Disastrous explosions have been started by ignitions of gas in asphalt mines ... Bureau of Mines , 1921 , 3 pp . Pickard , B. O. , and Gardner , E. D. , Methane in California Gold Mines : Rept . of ...
Side 4
... Mine Ventilation During 1930 : Inf . Circ . 6469 , Bureau of Mines , May , 1931 , 17 pp . HIGH - NITROGEN AND LOW - OXYGEN GASES 5 are 4 GASES THAT OCCUR IN METAL MINES High-nitrogen or carbon dioxide and low-oxygen gases--
... Mine Ventilation During 1930 : Inf . Circ . 6469 , Bureau of Mines , May , 1931 , 17 pp . HIGH - NITROGEN AND LOW - OXYGEN GASES 5 are 4 GASES THAT OCCUR IN METAL MINES High-nitrogen or carbon dioxide and low-oxygen gases--
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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.