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" When coal is extremely lumpy, it is best to break a proportional amount of the lumps before taking the various increments of a sample. Provision should be made for the preservation of the integrity of the sample. "
A Coal Manual for Salesmen, Buyers and Users - Σελίδα 39
των Francis Rawle Wadleigh - 1921 - 184 σελίδες
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Bulletin

United States. Bureau of Mines - 1916 - 74 σελίδες
...the preservation of the integrity of the sample. Quantity repre- 4. A gross sample shall be taken for each 500 tons or less, or in case of larger tonnages for such quantities as may be agreed upon. Preparation. 5. After the gross sample has been collected, it shall be systematically crushed, mixed,...

Finding and Stopping Waste in Modern Boiler Rooms: A Reference Manual to Aid ...

H. S. B. W. Cochrane Corporation, Philadelphia - 1918
...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 larger tonnages for such quantities as may be agreed upon. 5. Preparation. — After the gross sample has been collected, it shall be systematically crushed,...

Technical Gas and Fuel Analysis

Alfred Holmes White - 1920 - 319 σελίδες
...should be made 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 quantities as may be agreed upon. 1 Bulletin 116 and Technical Paper 133 by Ceo. S. Pope. 2 ASTM Standards issued by American Society...

A Coal Manual for Salesmen, Buyers and Users

Francis Rawle Wadleigh - 1921 - 184 σελίδες
...American Society for Testing Materials, adopted, in 1916, a standard method for sampling coal, as a reThe official description is given herewith in full. For...in Sample Before Division, in. 1000 or over 1 5000 % 850 Va 125 % 60 % 30 3/16 or 4-mesh screen Crushing 5. After the gross sample has been collected,...

Ceramic Data Book

1922
...should be made 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 quantities aa may be agreed upon. TABLE I. Weight of Sample Largest Size of Coal and Impurities to be Divided,...

NBS Special Publication, Τεύχος 110

1930
...should be made 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 quantities as may be agreed upon. 5. After the gross sample has been collected, it shall be systematically crushed, mixed, and reduced...

Standards and Specifications for Nonmetallic Minerals and Their Products ...

John Quayle Cannon - 1930 - 680 σελίδες
...should be made 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 quantities as may be agreed upon. 6. After the gross sample has been collected, It shall be systematically crushed, mixed, and reduced...




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