Search U.S. government technical reports digitized or harvested by TRAIL.
Preliminary evaluation of bit impact ignitions of methane using a drum-type cutting head
Large-scale laboratory drag cutter experiments in hard rock
A laboratory comparison of drag cutting methods in hard rock
Large-scale testing of the ripper fragmentation system
Physical properties and mechanical cutting characteristics of cobalt-rich managanese crusts
An investigation of crack propagation with a wedge indenter to improve rock fragmentation efficiency