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Suspension roof support.
Use of torque wrench to determine load in roof bolts.
Use of torque wrench to determine load in roof bolts.
Use of torque wrench to determine load in roof bolts.
Anchorage testing of mine-roof bolts.
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Published Year
1940-1949 (1)
1950-1959 (4)
Subject
Mine roof bolting (5) *
Mine roof control (1)
Author
Barry, A. J. (5) *
McCormick, John A. (3)
Panek, Louis Anthony, (3)
Metcalfe, Arthur. (1)
Panek, Louis A. (1)
Thomas, Edward. (1)
