 | 1913 - 1054 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 of lump coal, fine coal, and impurities as is contained in the coal delivered. As the increments are collected, they will be deposited in a receptacle... | |
 | 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 of lump coal, fine coal, and impurities as is contained in the coal delivered. As the increments are collected, they will be deposited in a receptacle... | |
 | 1916 - 1072 σελίδες
...pieces of such impurities are very large, a gross sample of 1,500 pounds 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... | |
 | 1916 - 806 σελίδες
...the pieces of such impurities are very large, a gross sample of 1500 lb. 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... | |
 | 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 having a... | |
 | H. S. B. W. Cochrane Corporation, Philadelphia - 1918 - 286 σελίδες
...pieces of such impurities are very large, a gross sample of 1,500 pounds 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... | |
 | 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 coal, fine coal, and impurities as is contained in the coal sampled. Provision should be made for the preservation of the integrity of... | |
 | 1918 - 992 σελίδες
...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, fine coal, and impurities as is contained in the coal sampled. When coal is extremely lumpy, it is best to break a proportional... | |
 | Alfred Holmes White - 1920 - 348 σελίδες
...such impurities are very large, a gross sample of approximately 1500 Ib. or more should 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... | |
 | Francis Rawle Wadleigh - 1921 - 196 σελίδες
...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, fine coal, and impurities as is contained in the coal sampled. When coal is extremely lumpy, it is best to break a proportional... | |
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Ib. 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... 
