Search U.S. government technical reports digitized or harvested by TRAIL.
Toward development of a hard-rock mining machine--drag cutter experiments in hard abrasive rocks
Large-scale laboratory drag cutter experiments in hard rock
Water-jet-assisted roadheaders
Correlating abrasive wear to alloy additions in low-alloy steels
Effects of barium-based additive on diesel exhaust particulate
Techniques to increase water pressure for improved water-jet-assisted cutting
Feasibility of CO₂ monitoring to assess air quality in mines using diesel equipment
Apparatus for measuring diesel tailpipe emissions in underground mines