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You searched for: Creator Personal Names Geyer, John Nicholas, 1896- Remove constraint Creator Personal Names: Geyer, John Nicholas, 1896- All Subjects Coal mine accidents. Remove constraint All Subjects: Coal mine accidents. All Subjects Coal mines and mining--West Virginia. Remove constraint All Subjects: Coal mines and mining--West Virginia.
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1. Falls of roof in mines operating in the Pittsburgh coal bed, West Virginia.

Creator Personal:
Geyer, John Nicholas, 1896-, Paul, James Washington.
Title:
Falls of roof in mines operating in the Pittsburgh coal bed, West Virginia.
Call Number:
P3216
Date:
1933
Description:
Government document. Issued as: United States. Department of Commerce. Bureau of Mines. Technical paper, 547.
Subject Topical:
Coal mine accidents., Coal mines and mining--West Virginia.
All:
Coal mine accidents., Coal mines and mining--West Virginia.