Information Circular1950 - Mines and mineral resources |
From inside the book
Results 1-5 of 99
Page 11
... material for this report is gratefully acknowledged . Thanks are tendered , also , to the following members of the staff , who supplied needed information : Miller , engineer , Fillmore Murphy , mill foreman , and D. Baslington , mine ...
... material for this report is gratefully acknowledged . Thanks are tendered , also , to the following members of the staff , who supplied needed information : Miller , engineer , Fillmore Murphy , mill foreman , and D. Baslington , mine ...
Page 15
... materials from timber - creosoting plants Study of spontaneous heating of carbonaceous shales from the Menominee iron range of Michigan .. Determination of incombustible material in coal - mine dusts .... Determination of mercury in ...
... materials from timber - creosoting plants Study of spontaneous heating of carbonaceous shales from the Menominee iron range of Michigan .. Determination of incombustible material in coal - mine dusts .... Determination of mercury in ...
Page 1
... materials from timber - creosoting plants Study of spontaneous heating of carbonaceous shales from the Menominee iron range of Michigan ... Determination of incombustible material in coal - mine dusts ..... Determination of mercury in ...
... materials from timber - creosoting plants Study of spontaneous heating of carbonaceous shales from the Menominee iron range of Michigan ... Determination of incombustible material in coal - mine dusts ..... Determination of mercury in ...
Page 7
... materials , such as dusts from coal and metal mines , quarries , construction jobs , coal and oil ash , slag , limestone ... material for coal - mine locomotives , a survey was started to evaluate the dust exposure of motormen and their ...
... materials , such as dusts from coal and metal mines , quarries , construction jobs , coal and oil ash , slag , limestone ... material for coal - mine locomotives , a survey was started to evaluate the dust exposure of motormen and their ...
Page 8
... materials of low silica content to use as substitutos for quartz sand as traction material for mine locomotives . Observations were made on the use of iron - orc tailings for this purpose at a mine in West Virginia , but the study has ...
... materials of low silica content to use as substitutos for quartz sand as traction material for mine locomotives . Observations were made on the use of iron - orc tailings for this purpose at a mine in West Virginia , but the study has ...
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13 north 37 south accidents anthracite anthracite mines Bituminous Coal bituminous-coal and lignite blasting blends Bureau of Mines carbon dioxide carbon monoxide catalyst cent mines cent circuit coal bed Coal Mine Inspection coke conditions and practices County D.C. Approval determine drilling dust respirators electric equipment explosives Federal Mine Safety feet field filter fire area first-aid fiscal year 1949 fuel gasification Gunnison County haulage hazards Health and Safety high-volatile Highland Surprise holes hydrogen inches industries Inspection Branch installed investigations issued Joy Manufacturing June 30 lignite mines loading machine mechanical method mill mineral mines cent mines Mines Information Circular motor Number officials operations oxygen Per-No percent personnel Pine Creek Pittsburgh plant Pocahontas portal production reports respirators respiratory protective devices rock dust roof support roof-control Safety Code Safety Division samples shaft SHOSHONE COUNTY surface surface magazine synthesis gas tests timber tons Total tunnel Type underground Valier ventilation volts zinc