Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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Resultat 1-5 av 7
Side 1
... connection with mining almost invariably it is inferred that the explosive gas , methane , is in mind and that the reference is to coal mining . Although methane is likely to occur in any coal mine , the metal mines of the world contain ...
... connection with mining almost invariably it is inferred that the explosive gas , methane , is in mind and that the reference is to coal mining . Although methane is likely to occur in any coal mine , the metal mines of the world contain ...
Side 3
... connected with the occurrences of methane in metal mines are omitted here ; details for some have not been published ... connection with this work that some drastic action should be taken to make tunnel driving and excavating for deep ...
... connected with the occurrences of methane in metal mines are omitted here ; details for some have not been published ... connection with this work that some drastic action should be taken to make tunnel driving and excavating for deep ...
Side 4
... connection with the driving of shafts and tunnels for the Hetch Hetchy water project near San Francisco several ignitions of methane have occurred in which some men have been killed and others burned ; one rather serious fire also ...
... connection with the driving of shafts and tunnels for the Hetch Hetchy water project near San Francisco several ignitions of methane have occurred in which some men have been killed and others burned ; one rather serious fire also ...
Side 8
... connection with fires in metal mines , including not only quick , hot fires but also long - drawn - out partly sealed or sealed fires . One should always keep in mind the fact that if oxygen is deficient no type of gas mask can be worn ...
... connection with fires in metal mines , including not only quick , hot fires but also long - drawn - out partly sealed or sealed fires . One should always keep in mind the fact that if oxygen is deficient no type of gas mask can be worn ...
Side 12
... connected with high - sulphur petroleum production and refining amply testify to the extreme danger of this gas . Hydrogen sulphide inhaled in large amounts results in immediate asphyxiation ; is in small amounts it results in ...
... connected with high - sulphur petroleum production and refining amply testify to the extreme danger of this gas . Hydrogen sulphide inhaled in large amounts results in immediate asphyxiation ; is in small amounts it results in ...
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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.