 | 1930 - 722 σελίδες
...D21. (See 501.0, p. 4.) The increments shall be regularly and systematically collected, so that the entire quantity of coal sampled will be represented...sample of the required amount shall be collected. (6) In case it is necessary to collect the sample from the exposed surface of the car, at least nine... | |
 | John Quayle Cannon, Addams Stratton McAllister - 1930 - 706 σελίδες
...D21. (See 501.0, p. 4.) The increments shall be regularly and systematically collected, so that the entire quantity of coal sampled will be represented...sample of the required amount shall be collected. (6) In case it is necessary to collect the sample from the exposed surface of the car, at least nine... | |
 | United States. Army. Quartermaster Corps - 1930 - 1216 σελίδες
...coal and impurities being sampled. Collect the increments regularly and systematically, so that the entire quantity of coal sampled will be represented proportionately in the gross sample, and collect them at such intervals that the gross sample will be of the required size. The gross sample... | |
 | United States. Army. Quartermaster Corps - 1930 - 1238 σελίδες
...coal and impurities being sampled. Collect the increments regularly and systematically, so that the entire quantity of coal sampled will be represented proportionately in the gross sample, and collect them at such intervals that the gross sample will be of the required size. The gross sample... | |
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The increments shall be regularly and systematically collected, so that the entire quantity of coal sampled will be represented proportionately in the gross sample, and with such frequency that a gross sample of the required amount shall be collected.... 
