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Kettlebottoms :their relation to mine roof and support

Clay veins :their occurrence, characteristics, and support

Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining

Published Year

• 1980-1989 (3)

Subject

• Coal mines and mining--Safety measures (2)
• Clay veins (1)
• Coal mines and mining--West Virginia--McDowell County (1)
• Ground control (Mining) (1)
• Kettlebottoms (Mining) (1)
• Mine roof control (1)
• Pillaring (Mining) (1)

Author

• Chase, Frank E. (3) *
• Campoli, A. A. (1)
• Oyler, David C. (1)
• Sames, Gary P. (1)
• Ulery, J. P. (1)

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