Barrier Pillars in Wyoming Basin, Northern Field: Anthracite Region of Pennsylvania
Description:
From Introduction: "The purpose of this report is to furnish factual data on barrier pillars that enter into the water problem of the Wyoming Basin; these data will, in turn, be helpful in solving the anthracite-mine-water problem of the Northern field."
Date:
1954
Creator:
Ash, S. H. (Simon Harry), b. 1889
Item Type:
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