 | Geology - 1906 - 1138 pages
...sample from water and from admixture of shale and clay fragments that usually abound in such places. The coal composing the sample was then pulverized...preparing samples, until a quart sample was obtained, the particles of coal being reduced to a size not much greater than one-half inch in diameter. The... | |
 | Geology - 1905 - 830 pages
...quartered down according to the generally accepted rules for preparing samples until a quart .simple was obtained with the particles of coal reduced to...in diameter. The sample was placed in an air-tight galvanized iron can having a screw top and the can was hermetically sealed by screwing the top down... | |
 | Edward Wheeler Parker - Coal - 1905 - 690 pages
...work. This cut was about 3 inches wide and 1 inch deep. The coal obtained from it, amounting to i!5 or 30 pounds, was caught upon an oilcloth blanket...in diameter. The sample was placed in an air-tight galvanized iron can having a screw top and the can was hermetically sealed by screwing the top down... | |
 | Geological Survey (U.S.) - Geology - 1906 - 330 pages
...sample from water and from admixture of shale and clay fragments that usually abound in such places. The coal composing the sample was then pulverized...preparing samples until a quart sample was obtained, the particles of coal being reduced to a size not much greater than one-half inch in diameter. The... | |
 | Harry Foster Bain - Lead mines and mining - 1906 - 778 pages
...from water and from admixture of shale and clay fragments that usually abound in such places. Tlie coal composing the sample was then pulverized and...preparing samples, until a quart sample was obtained, the particles of coal lx>ing reduced to a size not much greater than one-half inch in diameter. The... | |
 | Lester Paige Breckenridge - Coal - 1907 - 406 pages
...work. This cut was about 3 inches wide and 1 inch deep. The coal obtained from it, amounting to 2o or 30 pounds, was caught upon an oilcloth blanket...screwing the top down tight and covering the joint with tiro tape. The can containing the sample was then mailed to the testing plant, and in almost all cases... | |
 | Geology, Economic - 1907 - 602 pages
...samples from water and from admixture of shale and clay fragments that usually abound in such places. The coal composing the sample was then pulverized...preparing samples, until a quart sample was obtained, the particles of coal being reduced to a size not much greater than one-half inch in diameter. The... | |
 | Alfred Geddes Maddren - Gold mines and mining - 1910 - 726 pages
...samples from water and from admixture of shale and clay fragments that usually abound in such places. The coal composing the sample was then pulverized...preparing samples, until a quart sample was obtained, the particles. of coal being reduced to a size not much greater than one-half inch in diameter. The... | |
 | United States - 1910 - 872 pages
...samples from water and from admixture of shale and clay fragments that usually abound in such places. The coal composing the sample was then pulverized...preparing samples, until a quart sample was obtained, the particles of coal being reduced to a size not much greater than one-half inch in diameter. The... | |
 | Geological Survey (U.S.) - Geology - 1903 - 324 pages
...sample from water and from admixture of shale and clay fragments that usually abound in such places. The coal composing the sample was then pulverized...preparing samples until a quart sample was obtained, the particles of coal being reduced to a size not much greater than one-half inch in diameter. The... | |
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... inch in diameter. The sample was placed in an air-tight galvanized iron can having a screw top and the can was hermetically sealed by screwing the top down tight and covering the joint with tire tape. 