Search U.S. government technical reports digitized or harvested by TRAIL.
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
Model coal tunnel fires in ventilation flow
Sideboard device for improved face ventilation in coal mines
Water spray vent tube cooler for hot stopes :a preliminary report
Three coal mine gob degasification studies using surface boreholes and a bleeder system
Behavior of wood fires in model tunnels under forced ventilation flow :Tests with untreated wood
Control of methane by ventilation of shafts during raise drilling
Methane drainage study using an underground pipeline, Marianna mine 58
Reducing dust at longwall shearers by confining the dust cloud to the face
New twin scrubber installation for continuous mining machines
The water spray cooler :an update
Sulfur hexafluoride as a mine ventilation research tool :recent field applications
Degasification study from an air shaft in the Beckley Coalbed
Effects of a fan shutdown on a radon concentration in a positive pressure ventilated mine
Control of longwall gob gas with cross-measure boreholes (upper Kittanning coalbed)
Reducing longwall tailgate workers' dust exposure utilizing water-powered scrubbers
Diesels in underground mining :a review and an evaluation of an air quality monitoring methodology
Coal mine air tempering :effectiveness, design, and roof support
Comparison of rotary and in-hole motor techniques for drilling horizontal boreholes in coal
Laboratory evaluation of spray-applied rigid urethane foams
Face ventilation for oil shale mining
Transformer fluid fires in a ventilated tunnel
Dust controls to improve quality of longwall intake air
Deposition of respirable coal dust in an airway
Performance characteristics of large-capacity face ventilation systems for oil shale mining
Wood crib fires in a ventilated tunnel
Recent developments in spray cooling of deep mines
Evaluating ventilation parameters of three coal mine gobs
Method factors for anemometer measurement at pipe outlets
Calculating fire-throttling of mine ventilation airflow
Effects of barium-based additive on diesel exhaust particulate
Impact of water sprays on scrubber ventilation effectiveness
Impact of using auxiliary fans on coal mine ventilation efficiency and cost
Dust considerations when using belt entry air to ventilate work areas
Determining the source of longwall gob gas :Lower Kittanning Coalbed, Cambria County, PA
The Effect of ventilation on the water spray pattern of automatic sprinkler heads
Impact of air velocity of the development and detection of small coal fires