Archive for February 8th, 2018

Originally published in the Pacific Coast Bulletin, February 7, 1924

Here are two mine examination questions of interest to firebosses and foremen. After you have solved them compare your answers with the correct solutions shown herewith.

QUESTION—If coal occupies 40 cu. ft. per ton, what size of storage bin will be required to carry a three weeks supply of coal for a plant where the water consumption is 12,937.5 lb. per hr.?

Assume a pound of coal evaporates 5 lb. of water; and state what weight of coal will be required in storage. (more…)

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