Moisture 1. The coal shall be sampled when it is being loaded into or unloaded from railroad cars, ships, barges, or wagons, or when discharged from supply bins, or from industrial railway cars, or grab buckets, or from any coalconveying equipment, as...
A Coal Manual for Salesmen, Buyers and Users - Σελίδα 38
των Francis Rawle Wadleigh - 1921 - 184 σελίδες
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