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Centrifugal testing apparatus for mine-structure stress analysis

Use of torque wrench to determine load in roof bolts.

Anchorage testing of mine-roof bolts.

Use of torque wrench to determine load in roof bolts.

Design of bolting systems to reinforce bedded mine roof

Theory of model testing as applied to roof bolting

Use of torque wrench to determine load in roof bolts.

Anchorage testing of mine-roof bolts.

Principles of reinforcing bedded mine roof with bolts


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