Browse TRAIL Inventories

A network analyzer for solving mine-ventilation-distribution problems

Making ventilation-pressure surveys with altimeters

Coal-mine ventilation without doors to control main air currents

Auxiliary ventilation of continuous miner places

Airflow changes in multiple-fan systems

Methods and costs of sinking a circular concrete-lined ventilation shaft

Methods and costs of shaft sinking in the Coeur d'Alene District, Shoshone County, Idaho

Survey of face ventilation practices in coal mines

Methods and costs of shaft sinking, U.S. Atomic Energy Commission Project Gnome, near Carlsbad, New Mexico

A study of dust-control methods for continuous mining of coal

Removing methane (degasification) from the Pocahontas No. 4 coalbed in southern West Virginia

Ventilation of continuous-miner places in coal mines

Rigid foam for mines

Electronic monitoring of mine fans

Rock-dust disseminator used in return air currents, Koehler Mine, Kaiser Steel Corp., Koehler, N. Mex.

Stoppings for ventilating coal mines

Effects of bleeder entries during atmospheric pressure changes

Face ventilation in underground bituminous coal mines :performance characteristics of common jute line brattice

Miniature bilevel alarm for oxygen-deficient atmospheres

Gas chromatographic analyses of the principal constituents of mine atmospheres

Miniature oxygen deficiency alarm

Face ventilation in underground bituminous coal mines :airflow characteristics of flexible, spiral-reinforced ventilation tubing

Radiation-ventilation relationships in six underground uranium mines

Face ventilation in underground bituminous coal mines :airflow and methane distribution patterns in immediate face area-line brattice

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


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