Search U.S. government technical reports digitized or harvested by TRAIL.
Preliminary evaluation of the relationship of bit wear to cutting distance, forces, and dust using selected commercial and experimental coal- and rock-cutting tools
Blast vibrations and other potential causes of damage in homes near a large surface coal mine in Indiana
COALVAL, a prefeasibility software package for evaluating coal properties using Lotus 1-2-3, release 2.2 :documentation and user's guide