Information Circular1950 - Mines and mineral resources |
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Page 20
... occurred during the fiscal year 1949 two explosions , in which 24 lives were lost , and one fire , in which 5 lives were lost . Miscellaneous Accidents During the fiscal year 1949 , 132 miscellaneous accidents were reported , including ...
... occurred during the fiscal year 1949 two explosions , in which 24 lives were lost , and one fire , in which 5 lives were lost . Miscellaneous Accidents During the fiscal year 1949 , 132 miscellaneous accidents were reported , including ...
Page 39
... inspected . The excessive number of unusually hazardous conditions and practices found during these inspections shows why so many accidents occur in small mines . REGULAR INSPECTION WORK Inspections of coal mines under the Coal 3643 37.
... inspected . The excessive number of unusually hazardous conditions and practices found during these inspections shows why so many accidents occur in small mines . REGULAR INSPECTION WORK Inspections of coal mines under the Coal 3643 37.
Page 44
... occurred in coal mines of the Nation during the fiscal year ended June 30 , 1949 , are listed in table 7 and shown ... occur . 2.0 1.0 1933 1935 1937 1939 1941 1943 1945 1947 3643 · - 44.
... occurred in coal mines of the Nation during the fiscal year ended June 30 , 1949 , are listed in table 7 and shown ... occur . 2.0 1.0 1933 1935 1937 1939 1941 1943 1945 1947 3643 · - 44.
Page 54
... occurred in underground bituminous coal mines employing less than 25 men . · They do not include- The man - hours are The NOTE . These data cover only underground employees . surface employees nor strip - mine employees . based on ...
... occurred in underground bituminous coal mines employing less than 25 men . · They do not include- The man - hours are The NOTE . These data cover only underground employees . surface employees nor strip - mine employees . based on ...
Page 46
... occurred in underground bituminous coal mines employing . less than 25 men . · NOTE . These data cover only underground employees . They do not include- surface employees nor strip - mine employees . The man - hours are based on working ...
... occurred in underground bituminous coal mines employing . less than 25 men . · NOTE . These data cover only underground employees . They do not include- surface employees nor strip - mine employees . The man - hours are based on working ...
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13 north 37 south anthracite anthracite mines bituminous coal bituminous-coal and lignite blasting blends Bureau of Mines carbon dioxide carbon monoxide cars catalyst cent mines cent circuit coal bed Coal Mine Inspection coal mines coal-mine inspectors coke concentrate conditions and practices cost County cut and fill D.C. Approval drilling dust allaying electric engineers equipment explosions feet Figure fill stoping fire area fiscal year 1949 fuel gas mask gasification Gunnison County haulage high-volatile Highland Surprise holes hydrogen inches installed investigation Joy Manufacturing June 30 lignite lignite mines loading machine main east entry mechanical method mill mineral mines cent mines Mines Information Circular motor operations oxygen Per-No percent Pine Creek Pittsburgh plant Pocahontas portal properties reports respirators rock dust roof support samples seals shaft SHOSHONE COUNTY shrinkage stoping steel surface surface magazine switch synthesis gas tests timber tons Total tunnel Type underground ventilation volts zinc