Search U.S. government technical reports digitized or harvested by TRAIL.
Rock-bolt anchorage in tertiary-gravel material :Badger Hill, California
Rock damage from small charge blasting in granite
Effects of specimen radius on the stress state near a roof bolt anchor :a finite element determination
Temperature investigations on resin-anchored bolts
Roof rock structures and related roof support problems in the Pittsburgh coalbeds of southwestern Pennsylvania
Longer-than-seam-height drill development program