Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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Side
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
ARTES 1817 SCIENTIA VERITAS LIBRARY OF THE UNIVERSITY OF MICHIGAN TUEBOR S1 - QUERIS PENINSULAM - AMCNAM CIRCUMSPICE FROM THE LIBRARY OF SCOTT TURNER THE GIFT OF SCOTT TURNER MICHIGAN A.B. 1902 : D. ENG . 1930 FROM THE LIBRARY OF SCOTT ...
ARTES 1817 SCIENTIA VERITAS LIBRARY OF THE UNIVERSITY OF MICHIGAN TUEBOR S1 - QUERIS PENINSULAM - AMCNAM CIRCUMSPICE FROM THE LIBRARY OF SCOTT TURNER THE GIFT OF SCOTT TURNER MICHIGAN A.B. 1902 : D. ENG . 1930 FROM THE LIBRARY OF SCOTT ...
Side 2
... Michigan copper and iron mines while long - abandoned timbered mines were being un- watered , and as usual the open light has been the igniting agency . In unwatering any kind of mine , coal or metal , long filled with water ...
... Michigan copper and iron mines while long - abandoned timbered mines were being un- watered , and as usual the open light has been the igniting agency . In unwatering any kind of mine , coal or metal , long filled with water ...
Side 4
... Michigan , a worker ignited a body of methane in light- ing a cigaret ; 29 men were burned , although , fortunately , none were killed . Samples of air from the tunnel were analyzed and found to contain appreciable percentages of ...
... Michigan , a worker ignited a body of methane in light- ing a cigaret ; 29 men were burned , although , fortunately , none were killed . Samples of air from the tunnel were analyzed and found to contain appreciable percentages of ...
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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.