Causes of Wants or Areas of Barren Ground in the Coal Beds of the State
Creators:Roy, Andrew, 1834-
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Citation:Ohio Mining Journal, vol. 1, no. 1 (November, 1882), 32-35.
The paper by Mr. Roy on the Causes of Wants or Areas of barren ground in the coal beds of the State was the last of the series, and brought out quite a lengthy discussion by a number of the engineers, Mr. Akley, Mr. Head, Mr. Mitchell and Mr. Hazeltine, taking part in the discussion.
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