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Studies of roof movement in coal mines.

Water problem in the Pennsylvania anthracite mining region

Backfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidence

Published Year

• 1940-1949 (3) *

Subject

• Coal mines and mining--Pennsylvania (3) *
• Anthracite coal--Pennsylvania (2)
• Mine drainage (1)
• Mine subsidence (1)
• Mining engineering (1)
• Subsidences (Earth movements) (1)

Author

• Ash, S. H. (2)
• Greenwald, H. P. (1)
• Maize, Earl R. (1)
• Thomas, Edward. (1)
• Westfield, James. (1)

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