Search U.S. government technical reports digitized or harvested by TRAIL.
Placer-mining methods of E.T. Fisher Co., Atlantic City, Wyo.
Placer operations of Humphreys Gold Corporation, Clear Creek, Colo.
Performance of a hydraulic classifier designed to incorporate four hitherto neglected principles
Mining and transporting coal underground by hydraulic methods :a literature survey
Hydraulic coal mining research :equipment and preliminary tests
Hydraulic coal mining research :tests in a steeply pitching coalbed, Rosalyn, Wash.
Hydraulic fracture treatments in Glade and Clarendon oil reservoirs, Warren County, Pa.
Hydraulic mining of anthracite :engineering development studies
Hydraulic mining of anthracite :analysis of operating variables
Fragmentation of concrete with hydraulic jets
Airborne respirable dust generated during cutting of coal with water jets
A support-performance prediction method for hydraulic backfill