Search U.S. government technical reports digitized or harvested by TRAIL.
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.
Use of torque wrench to determine load in roof bolts.
Anchorage testing of mine-roof bolts.
Evaluating anchorage testing methods for expansion-type mine roof bolts