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Proceedings of the symposium on respirable coal mine dust, Washington D.C., November 3-4, 1969

Methane emission rate studies in a central Pennsylvania mine

Methane emission from U.S. coal mines :a survey

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

Methane emission rate study in a deep Pocahontas No. 3 coalbed mine in conjunction with drilling degasification holes in the coalbed

Flame spread evaluation of ventilation cloth

Methane control by isolation of a major coal panel :Pittsburgh coalbed

The direct method of determining methane content of coalbeds for ventilation design

Degasification of virgin Pittsburgh coalbed through a large borehole

Bleeder system in virgin area in a Pittsburgh coalbed mine

A continuous-recording methanometer for exhaust fan monitoring

Ventilation eddy zones at a model coal mine working face

Statistical analysis of methane concentration fluctuations produced by incomplete mixing of methane and air at a model coal mine working face

Tracer gas as an aid in mine ventilation analysis

Using sulfur hexafluoride as a gaseous tracer to study ventilation systems in mines

Replacing brattice cloth at coal faces with air curtains and diffuser fans,a preliminary study

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

A spiral sequential sampler for air and liquids :preliminary results

Three coal mine ventilation studies using sulfur hexafluoride tracer gas

Sampling capability of vacutainers for fixed gases and low-molecular-weight hydrocarbons

Longwall gob degasification with surface ventilation boreholes above the Lower Kittanning coalbed

Brattice window method for measuring leakage through mine stoppings

Directionally controlled drilling to horizontally intercept selected strata, upper Freeport coalbed, Green County, Pa.

Shock loss calculations across junctions and splits

Methane emissions from four working places in the Beckley mine, Raleigh County, W. Va.

Hydraulic stimulation of a surface borehole for gob degasification

Effect of duct fire on the ventilation air velocity

Jet fan effectiveness as measured with SF₆ tracer gas

Foam stimulation to enhance production from degasification wells in the Pittsburgh coalbed

Bureau of Mines damage-resistant brattice

Tracer gas method for measuring leakage through mine stoppings

Spontaneous oxidation and combustion of sulfide ores in underground mines :a literature survey

Directional drilling for coalbed degasification :program goals and progress in 1978

Dust control for a borer-type continuous miner using a venturi scrubber on a transfer car

Drainage of methane from the overlying Pocahontas no. 4 coalbed from workings in the Pocahontas no. 3 coalbed

Model coal tunnel fires in ventilation flow


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