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Books Bücher 1 - 10 von 12 in ... coal or powder smoke, a cut was made across the face of the coal from roof to...
" ... coal or powder smoke, a cut was made across the face of the coal from roof to floor, including all of the benches of coal mined and such impurities as were not removed in ordinary work. This cut was about 3 inches wide and 1 inch deep. The coal obtained... "
Bulletin - United States Geological Survey - Seite 19
von Geological Survey (U.S.) - 1905
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Bulletin, Ausgaben 260-261

1905
...affected by weathering in transit, it was loaded in a box car, but the great majority of samples werfc shipped in ordinary open coal cars without any protection...inch deep. The coal obtained from it. amounting to 2.1 or 30 pounds, was caught upon an oilcloth blanket spread upon the floor of the mine so as to protect...
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Preliminary Report on the Operations of the Coal-testing Plant of the United ...

Edward Wheeler Parker - 1905 - 172 Seiten
...ordinary open coal cars without any protection from the weather. Most of this coal was shipped duringthe months of August, September, October, and November,...inch deep. The coal obtained from it, amounting to i!5 or 30 pounds, was caught upon an oilcloth blanket spread upon the floor of the mine so as to protect...
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Bi-monthly Bulletin of the American Institute of Mining Engineers, Ausgaben 4-6

1905
...an undue amount of moisture in places where the floor was wet. A cut about 3 in. wide and 1 in. deep was made across the face of the coal from roof to floor, including thin and irregular shale, clay or sulphur partings, such as the miners fail to separate from the coal,...
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Professional Paper - United States Geological Survey

Geological Survey (U.S.) - 1906
...the chemical laboratory. Sample B was obtained in room 24, at the point where section B was measured. A cut was made across the face of the coal from roof to floor, including all parts of the bed usually mined, but excluding the partings noted in the section. This sample weighed...
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Professional Paper - United States Geological Survey

Geological Survey (U.S.) - 1906
...A was taken where section A was measured and sample B from the point where section B was measured. A cut was made across the face of the coal from roof to floor and the coal so obtained was crushed and quartered down until a quart sample of each was obtained....
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Zinc and Lead Deposits of the Upper Mississippi Valley

Harry Foster Bain - 1906 - 155 Seiten
...of the rani was cleaned of weathered coal and powder smoke a cut was made across the face of the bed from roof to floor, including all of the benches of coal mined arid such impurities as were not removed in ordinary work. This cut was about 3 inches wide and 1 inch...
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A Study of Four Hundred Steaming Tests Made at the Fuel-testing Plant, St ...

Lester Paige Breckenridge - 1907 - 196 Seiten
...following method was invariably observed : a After the face of the coal was cleaned of any we: tiered coal or powder smoke a cut was made across the face...inch deep. The coal obtained from it, amounting to 2o or 30 pounds, was caught upon an oilcloth blanket spread upon the floor of the mine, so as to protect...
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Contributions to Economic Geology, 1906, Ausgabe 316

Edwin Clarence Eckel, Marius Robinson Campbell, Samuel Franklin Emmons - 1907
...of the coal was cleaned of weathered coal and powder smoke a cut was made across the face of the bed from roof to floor, including all of the benches of...inch deep; the coal obtained from it, amounting to 25 [to 100] pounds, was caught upon an oilcloth [or heavy canvas square] spread upon the floor of the...
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Fuel Tests with Illinois Coal: Complied from Etest Made by the Technologic ...

Lester Paige Breckenridge, Paul Diserens - 1908 - 54 Seiten
...the coal at these places was cleaned in order to remove any weathered coal or powder smoke, and a cut made across the face of the coal from roof to floor, including all the benches mined and such impurities as were not removed in ordinary work. The coal obtained, amounting...
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The Innoko Gold-placer District, Alaska: With Accounts of the Central ...

Alfred Geddes Maddren - 1910 - 87 Seiten
...of the coal was cleaned of weathered coal and powder smoke a cut waa made across the face of the bed from roof to floor, including all of the benches of...inch deep; the coal obtained from it, amounting to 25 [to 100] o Preliminary report of the operations of the coal-testing plant of the US Geol. Survey at...
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