Search U.S. government technical reports digitized or harvested by TRAIL.
Study of quarry costs :trap rock, sandstone, granite
Prospecting and exploration for sand and gravel
Economics of potash recovery from wyomingite and alunite
Earth vibrations caused by quarry blasting :progress report 1
Earth vibrations caused by mine blasting :progress report 2
House movement caused by ground vibrations
Time study analyses :progress report 1 : quarry shovel loading