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Methane analyzer system to record continuously the methane content of coal mine ventilation air

Effects of hydraulic stimulation on coalbeds and associated strata

Hydraulic stimulation of a surface borehole for gob degasification

Humidity :a cyclic effect in coal mine roof stability

Methane accumulations in coal mine roof cavities

Effects of time between exposure and support on mine roof stability, Bear Coal Mine, Somerset, Colo.

Experimental studies on the origin and accumulation of coalbed gas

Grouting horizontal drainage holes in coalbeds

A fail-safe control system for a mine methane pipeline

Three coal mine gob degasification studies using surface boreholes and a bleeder system

Practical ignition problems related to intrinsic safety in mine equipment :four short-term studies

Reinforcement mechanisms of untensioned full-column resin bolt

Control of methane by ventilation of shafts during raise drilling

Methane drainage study using an underground pipeline, Marianna mine 58

Investigation of longwall gateroad roof support characteristics at Powhatan No. 4 Mine :instrumentation plan

Drilling a horizontal coalbed methane drainage system from a directional surface borehole

Laboratory testing of chemical oxygen self-rescuers for ruggedness and reliability

Preliminary evaluation of bit impact ignitions of methane using a drum-type cutting head

Control of longwall gob gas with cross-measure boreholes (upper Kittanning coalbed)

Novel coal-cutting bits and their wear resistances

Kettlebottoms :their relation to mine roof and support

Mechanical properties of some portland cement concretes made with coal and coal waste as aggregates

Geologic factors in coal mine roof stability :a progress report

Evaluation of the safety of one-hour compressed oxygen self-rescuers--results of destructive testing

Performance comparison of oxygen self-rescuers

Delayed blasting tests to improve highwall stability :a progress report

Effect of turbulence on vortex-shedding air-velocity transducers

Fire tests of five-gallon containers used for storage in underground coal mines

An overview of research on explosionproof enclosures

Remedial and strata replacement techniques on longwall faces :a report on the state of the art

Coal mine air tempering :effectiveness, design, and roof support

Electrostatic sensitivity, strength, and no-fire current of short-delay detonators

Anchorage capacities in thick coal roofs

Safety aspects of pneumatic transport

Coal mine roof instability :categories and causes

Bureau of Mines research into reducing materials handling injuries

Effects of millisecond-delay intervals on vibration and airblast from surface coal mine blasting

Delayed blasting tests to improve highwall stability :a final report

Firing delay characteristics of instantaneous and seismic detonators

Gas equilibrium in sealed coal mines

Short-delay blasting in underground coal mines

Evaluating ventilation parameters of three coal mine gobs

Investigation of similarities between methane drainage potential of Utah's Sunnyside Coalbed and eastern U.S. coalbeds

Protective structures for low-coal shuttle car operator

Coal mine hazard detection using in-seam ground-penetrating-radar transillumination

Clay veins :their occurrence, characteristics, and support

Probe-hole drilling :high-stress detection in coal

Evaluation of high-pressure front-mounted water jets for frictional-ignition suppression

Laboratory testing of the CSE SR-100 self-contained self-rescuer for ruggedness and reliability

Entry stabilization utilizing rib bolting procedures


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