Search U.S. government technical reports digitized or harvested by TRAIL.
A review of water-jet-assisted rock cutting
Pillar design methods for longwall mining
The Bureau of Mines ground-fault protection research program :a summary
Preventing automatic fire suppression system failures on underground mining belt conveyors
Cutter roof failure :six case studies in the Northern Appalachian Coal Basin
Frictional ignition with coal mining bits
Review of single-entry longwall mining technology in the United States
Multislice mining for thick western coal seams
BOMSPS :Bureau of Mines signal processing software : concepts, expressions, and tutorial
Baseline tensile testing at the Wire Rope Research Laboratory
A Cobalt commodity recycling flow model
Sources and characteristics of quartz dust in coal mines
Analysis of dump-point accidents involving mobile mining equipment
Analyses of natural gases, 1989
Thermal decomposition of ventilation ducting
Helium resources of the United States, 1989
Summary of combustion products from mine materials :their relevance to mine fire detection
Stress determination in rock using the Kaiser effect
Analysis of acoustic responses of domal salt mine samples
Effects of selected physical agents on the performance of acoustically absorptive materials
Infrared spectroscopic study of the flocculation of zinc and copper precipitates
Mitigating destructive longwall bumps through conventional gate entry design
Evaluation of pulsed-phase-lock-loop technology applied to mine roof bolt load measurement
Use of sheathed explosive charges on longwalls
Mathematical modeling of spontaneous heating of a coalbed
Recovery of sulfur from phosphogypsum :conversion of calcium sulfide to sulfur
Chromite recovery from northern California ores using a physical concentration process
Electromagnetic investigation of abandoned mines in the Galena, KS, area
Evaluation of a punch shear test device
Arch canopy verification tests
Impact of using auxiliary fans on coal mine ventilation efficiency and cost
Column flotation of multiple products from a fluorite ore
Pressure leaching of galena concentrates to recover lead metal and elemental sulfur
Electrolytic production of calcium metal
Evaluation of field-applied lubricants to increase wire rope life
Laboratory evaluation of cable bolt supports (in two parts) :
An improved method for preparing gravimetric standard gas mixtures of helium-4 in nitrogen
Leaching of pyroxmangite ore with calcium fluoride and sulfuric acid
Effect of nonionic surfactants on chalcopyrite leaching under dump chemical conditions
In-mine test of the Bureau of Mines preproduction wireless survey system
Laser tracking and tram control of a continuous mining machine