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Suspension roof support.

Roof movement study of mechanized retreating longwall operation, Lancashire no. 15 mine, Bakerton, Cambria County, Pa.

Published Year

• 1940-1949 (1)
• 1950-1959 (1)

Subject

• Mine roof control (2) *
• Longwall mining (1)
• Mine roof bolting (1)

Author

• Barry, A. J. (2) *
• Metcalfe, Arthur. (1)
• Thomas, Edward. (1)
• Wojciechowski, J. J. (1)

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