Bulletin, Utgave 347U.S. Government Printing Office, 1931 |
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Side 1
... fumes may contain some sulphur dioxide . GASES POSSIBLE IN METAL MINES Methane has been found in a number of metal mines and occur- rences have been attended by explosions ; its limits of inflammability are 5 to 14 per cent in air ...
... fumes may contain some sulphur dioxide . GASES POSSIBLE IN METAL MINES Methane has been found in a number of metal mines and occur- rences have been attended by explosions ; its limits of inflammability are 5 to 14 per cent in air ...
Side 3
... fumes from very active metal - mine fires , especially when water is introduced into fire areas where some of the strata are heated to incandescence . Recently , while drilling , a mixture of hydrogen , methane , ethane , and nitrogen ...
... fumes from very active metal - mine fires , especially when water is introduced into fire areas where some of the strata are heated to incandescence . Recently , while drilling , a mixture of hydrogen , methane , ethane , and nitrogen ...
Side 8
... fumes in which hydrogen sulphide was the most dangerous constituent , although it may have been accompanied in some instances by other noxious gases , such as sulphur dioxide , carbon monoxide , and various oxides of nitrogen . In ...
... fumes in which hydrogen sulphide was the most dangerous constituent , although it may have been accompanied in some instances by other noxious gases , such as sulphur dioxide , carbon monoxide , and various oxides of nitrogen . In ...
Side 9
... fumes containing hydrogen sulphide and sulphur dioxide as well as carbon monoxide . Sometimes sulphur gases are liberated in coal and metal mines directly or indirectly from waters released in mining ; as a rule , these gases are ...
... fumes containing hydrogen sulphide and sulphur dioxide as well as carbon monoxide . Sometimes sulphur gases are liberated in coal and metal mines directly or indirectly from waters released in mining ; as a rule , these gases are ...
Side 10
... fumes from a metal - mine fire under certain conditions may contain hydrogen sulphide , sulphur dioxide , methane , or hydrogen , as well as other gases . If the ore contains antimony or arsenic the fire fumes will give off oxides of ...
... fumes from a metal - mine fire under certain conditions may contain hydrogen sulphide , sulphur dioxide , methane , or hydrogen , as well as other gases . If the ore contains antimony or arsenic the fire fumes will give off oxides 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.