Information Circular1950 - Mines and mineral resources |
From inside the book
Results 1-5 of 48
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... volatile bituminous coals Medium - volatile bituminous coals 45 52 53 High - volatile bituminous coals .. No. 5 block- and Pocahontas No. 6 - bed coals Paonia , Colo . , coal Beckley - bed coal , Raleigh County , W. Va . Blending tests ...
... volatile bituminous coals Medium - volatile bituminous coals 45 52 53 High - volatile bituminous coals .. No. 5 block- and Pocahontas No. 6 - bed coals Paonia , Colo . , coal Beckley - bed coal , Raleigh County , W. Va . Blending tests ...
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... volatile bituminous coals Production of electrode carbon in Germany ... high - pressure steam generators Carbonization of coal Survey of carbonizing ... volatile bituminous coals High - volatile bituminous coals ... No. 5 block- and ...
... volatile bituminous coals Production of electrode carbon in Germany ... high - pressure steam generators Carbonization of coal Survey of carbonizing ... volatile bituminous coals High - volatile bituminous coals ... No. 5 block- and ...
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... high - volatile A ≥ : minous . The weighted average ash and sulfur content of samples of coal from the Fairview bed , as - received basis , are 14.0 and 3.8 percent , respectively . Analyses = sulfur forms in the Fairview coal show ...
... high - volatile A ≥ : minous . The weighted average ash and sulfur content of samples of coal from the Fairview bed , as - received basis , are 14.0 and 3.8 percent , respectively . Analyses = sulfur forms in the Fairview coal show ...
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... high - volatile A bitu- minous . The weighted average ash and sulfur content of samples of coal from the Fairview bed , as - received basis , are 14.0 and 3.8 percent , respectively . Analyses of sulfur forms in the Fairview coal show ...
... high - volatile A bitu- minous . The weighted average ash and sulfur content of samples of coal from the Fairview bed , as - received basis , are 14.0 and 3.8 percent , respectively . Analyses of sulfur forms in the Fairview coal show ...
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... high - volatile A bitu- minous . The weighted average ash and sulfur content of samples of coal from the Fairview bed , as - received basis , are 14.0 and 3.8 percent , respectively . Analyses of sulfur forms in the Fairview coal show ...
... high - volatile A bitu- minous . The weighted average ash and sulfur content of samples of coal from the Fairview bed , as - received basis , are 14.0 and 3.8 percent , respectively . Analyses of sulfur forms in the Fairview coal show ...
Common terms and phrases
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