TRAIL - Technical Report Archive and Image Library

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

Rapid response pneumatic fire detection for multilevel metal mines :system design and in-mine testing

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

Electrochemical impedance spectroscopy study of corrosion of painted cold-rolled and electrogalvanized sheet steel for automotive use

Laboratory evaluation of cable bolt supports (in two parts) :

Assessment of Ra²²⁶ and toxic element distribution at Tennessee Valley Authority phosphate slag stockpiles, Muscle Shoals, AL

Probability of making a successful mine escape while wearing a self-contained self-rescuer--a computer simulation

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

Froth flotation collision efficiencies in strong force fields

Recovery of sulfur from phosphogypsum :conversion of calcium sulfate to calcium sulfide

Mining machine orientation control based on inertial, gravitational, and magnetic sensors

Genetic algorithm applied to least squares curve fitting

Characterization of the rare-earth mineralogy at the Pea Ridge Deposit, Missouri

Reducing back injuries in low-coal mines :redesign of materials-handling tasks

Preliminary analysis of methodologies for mining thin-seam mountaintop coal resources

Blind pneumatic stowing in voids in abandoned mines

Computer-aided software engineering (CASE) for software automation

International intercalibration and intercomparison program radon daughter measurements :exercise at the Twilight Mine, Uravan, CO

Utilizing mechanical linear transducers for the determination of a mining machine's position and heading :the concept

Fuel additive and engine operation effects on diesel soot emissions

Human Factors in Mining Search System

Longwall automation :a ground control perspective

Dust control in coal preparation and mineral processing plants

Method and apparatus for direct determination of helium-3 in natural gas and helium

True uniaxial compressive strengths of rock or coal specimens are independent of diameter-to-length ratios

Field verification of load transfer mechanics of fully grouted roof bolts

Shield mechanics and critical load studies for unsymmetric contact configurations

The influence of sulfate ion on the coal-wetting performance of anionic surfactants

Mine fire diagnostics and implementation of water injection with fume exhaustion at Renton, PA

Slip-and-Fall Accidents During Equipment Maintenance in the Surface Mining Industry

Steel in motor vehicles - a 35-year perspective

Methods for the analysis of mineral chromites and ferrochrome slag

Advanced materials--outlook and information requirements :proceedings of a Bureau of Mines conference, November 7-8, 1989, Arlington, VA

Mineral industry in early America

Trends in Iron Casting Compositions as Related to Ferrous Scrap Quality and Other Variables: 1981-86

Interactions between multiple seam longwall and room-and-pillar operations :a case study in Boone County, WV

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