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

Acid mine water in the anthracite region of Pennsylvania

Published Year

• 1940-1949 (2)

Subject

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

Author

• Westfield, James. (2) *
• Ash, S. H. (1)
• Felegy, E. W. (1)
• Johnson, Leland H. (1)

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