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Explosions in Pennsylvania coal mines, 1870-1932
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Published Year
1930-1939 (1)
Subject
Coal mine accidents--Pennsylvania (1) *
Coal mines and mining--Pennsylvania (1)
Mine explosions--Pennsylvania (1)
Mine gases (1)
Mine rescue work (1)
Author
Forbes, John Joseph Vincent, (1) *
Humphrey, H. B. (1)
