TRAIL - Technical Report Archive and Image Library

Designing blast patterns using empirical formulas :a comparison of calculated patterns with plans used in quarrying limestone and dolomite, with geologic considerations

Bin hopper engineering and bulk materials flow :a state-of-the-art report on empirical and theoretical analyses

Analyses of natural gases, 1971

Injury experience in coal mining, 1967

Injury experience in coal mining, 1968

Respirators approved by the Bureau of Mines as of May 24, 1972 :a revision of Information circular 8436

Creep and other properties of zinc-copper-titanium alloys annealed after rolling

Activity patterns in the catalytic reduction of SO₂ on some transition elements in alumina

Recovery of feldspar and glass sand from South Carolina waste granite fines

In situ determination of stresses in mountainous topography

Effect of a surface borehole on longwall gob degasification(Pocahontas No. 3 Coalbed)

Force distribution in the high-intensity wet magnetic separator

Synthesis and characterization of dawsonite

An in-situ diffusion parameter for the Pittsburgh and Pocahontas No. 3 coalbeds

Separation of columbium, tantalum, titanium, and zirconium from titanium chlorination residues

Detection of rubble zones in oil shale by the electrical resistivity technique

Sample preparation variability in diamond-drill core from the Homestake Mine, Lead, S. Dak.

Reducing surface hot shortness of copper-bearing steels

Dispersion strengthening of internally oxidized iron-aluminum alloys

Hydrocarbon gases produced in a simulated swamp environment

Extraction of manganese from Georgia umber ores by a sulfuric acid-ferrous sulfate process (in two parts).

Dispersal of coal- and rock-dust deposits

A chemiluminescence detector for ozone measurement

Ground vibrations from tunnel blasting in granite :Cheyenne Mountain (NORAD), Colo.

Solubility of 1,1,2,2-tetrabromoethane in water as a function of temperature

Lowering the tin content of secondary leaded tin-bronze by replacement with lead or zinc

Extraction process for upgrading Sm₂O₃ using selective stripping techniques / by D.J. Bauer, L.E. Schultze, and R.E. Lindstrom.

The methane migration and storage characteristics of the Pittsburgh, Pocahontas No. 3, and Oklahoma Hartshorne coalbeds

Bureau of Mines instrumented impact tester :preliminary studies

Performance characteristics of coal-washing equipment :dense-medium cyclones

A solid-state amplifier for the bridge circuit of a mercury detector

The statistical and spatial evaluation of sulfur and ash in coal seams

Computer program for pit slope stability analysis by the finite element stress analysis and limiting equilibrium method

Estimating nahcolite and dawsonite content of Colorado oil shale from oil-yield assay data

Stability constants of metal coordination compounds :complexes of N-ethylethylenediamine and 2-(ethylthio)-ethylamine

Ultrafine grinding of several industrial minerals by the attrition-grinding process

Strongly caking coal gasified in a stirred-bed producer

Methane migration characteristics of the Pocahontas No. 3 coalbed

Evaluation of the sulfatization-reduction process for recovering manganese and iron oxide pellets

Ternary phase diagram for the system 1,1,2,2-tetrabromoethane/water/2-propanol

Methane emission in coal mines :effects of oil and gas wells

Recovery of phosphates and metals from phosphate sludge by solvent extraction

Solving ventilation problems with analog and digital computers

Analysis of fracture orientations for input to structural models of discontinuous rock

Emission characteristics of propane as automotive fuel

Oxygenates in automotive exhaust gas :estimation of levels of carbonyls and noncarbonyls in exhaust from gasoline fuels

Measurement and reduction of noise from detonating cord used in quarry blasting

Recovery of precious metals from electronic scrap

A comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal

Low-temperature heat capacities and high-temperature enthalpies of sodium chromate

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