 ... or more shall be collected. The gross sample should contain the same proportion of lump coal, fine coal, and impurities as is contained in the coal sampled. When coal is extremely lumpy, it is best to break a proportional amount of the lumps before...  Bulletin - Σελίδα 491916Πλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | 1913 - 1054 σελίδες
...evenly distributed throughout the coal, a gross sample of approximately 600 pounds may prove sufficient. The gross sample should contain the same proportion of lump coal, fine coal, and impurities as the coal delivered. As the portions are collected they should be deposited in a receptacle having a... | |
 | Iowa Geological Survey - 1914 - 820 σελίδες
...larger than three-quarters of an inch, a gross sample of approximately 600 pounds may prove sufficient. The gross sample should contain the same proportion...fine coal, and impurities as is contained in the coal delivered. As the increments are collected, they will be deposited in a receptacle having a tight-fitting... | |
 | H. S. B. W. Cochrane Corporation, Philadelphia - 1918 - 286 σελίδες
...of anthracite in which the impurities do not exist in abnormal quantities or in pieces larger than % inch, a gross sample of approximately 500 pounds shall...for the preservation of the integrity of the sample. 4. Quantity Represented. — A gross sample shall be taken for each 500 tons or less, or in case of... | |
 | United States. Army. Quartermaster Corps - 1917 - 1252 σελίδες
...such impurities are very large, a gross sample of 1,500 pounds or more shall be colloct«d . The groas sample should contain the same proportion of lump...and impurities as is contained in the coal sampled. Provision should be made for the preservation of the integrity of the sample. A gross sample shall... | |
 | 1917 - 734 σελίδες
...evenly distributed throughout the coal, a gross sample of approximately 600 pounds may prove sufficient. The gross sample should contain the same proportion of lump coal, fine coal, and impurities as the coal delivered. As soon as the portions are collected they should be deposited in a receotacle... | |
 | 1918 - 992 σελίδες
...impurities, such as slate, and if the pieces of such impurities are very large, a gross sample of 1500 Ib. or more shall be collected. The gross sample should...for the preservation of the integrity of the sample. 4. A gross sample shall be taken for each 500 tons or less, Quantity or in case of larger tonnages,... | |
 | Alfred Holmes White - 1920 - 348 σελίδες
...the pieces of such impurities are very large, a gross sample of approximately 1500 Ib. or more should be collected. The gross sample should contain the...for the preservation of the integrity of the sample. 4. A gross sample shall be taken for each 500 tons or less, or in case of larger tonnages, for such... | |
 | Alfred Holmes White - 1920 - 348 σελίδες
...approximately 1500 Ib. or more should be collected. The gross sample should contain the same proportion cf lump coal, fine coal, and impurities as is contained...for the preservation of the integrity of the sample. 4. A gross sample shall be taken for each 500 tons or less, or in case of larger tonnages, for such... | |
 | 1921 - 936 σελίδες
...impurities, such as slate, and if the pieces of such impurities are very large, a gross sample of 1500 Ib. or more shall be collected. The gross sample should contain the same proportion of lump coal, line coal, and impurities as is contained in the coal sampled. When coal is extremely lumpy, it is... | |
 | 1926 - 360 σελίδες
...impurities, such as slate, and If the pieces of such impurities are very large, a gross sample of 1,500 Ib. or more shall be collected. The gross sample should...impurities as is contained in the coal sampled. When TABLE I. Weight of Sample Largest Size of Coal and Impurities to be Divided, Ib. Allowable in Sample... | |
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