Browse TRAIL Inventories

Some hazards of conveyor loading in coal mines

Permissible electrically operated hand-held coal drills

Multiple-shift mechanical mining in some bituminous coal mines.

Some information on the transportation, storage, and handling of lubricants in and about coal mines

Description of the Eickhoff-Schr©·amlader longwall coal-cutting and loading machine

Design and operation of the coal planer, Ruhr District, Germany

Anthracite mechanical mining investigations :progress report 2 : preliminary testing of the Eickhoff shearing machine, model DEK

Anthracite mechanical mining investigations :progress report 1 : preliminary underground tests of the Bureau of Mines scraper-shaker loading machine for driving gangways

Anthracite mechanical mining investigations.

Anthracite mechanical mining investigations.

Modified longwall mining with a German coal planer (plow) in the Pocohontas No. 4 coal bed, Helen, W. Va.

Anthracite mechanical mining investigations.

Anthracite mechanical-mining investigations.

Mining with a Dosco continuous miner on a longwall face

Mechanical mining in some bituminous-coal mines.

Modified longwall mining with a German coal planer.

Anthracite mechanical-mining investigations :use of yielding steel supports (props) in combination with backfilling for mining thick, flat beds

Mechanical mining in some bituminous-coal mines.

Modified longwall mining with German coal planers :summary of operations at five coal mines

The use of augers in surface mining of bituminous coal

Mechanical mining in some bituminous-coal mines :progress report 9 : face haulage

Extracting final stump in pillars and pillar lifts with continuous miners

Use of a large-diameter auger in mining pitching anthracite beds

Longwall mining with a German coal planer :Pocahontas No. 3 coalbed, Keystone, W. Va.

Developing a lock-hopper feeder for hydraulic hoisting of coal

Use of a continuous borer in mining pitching anthracite beds

Pneumatic transportation of solidsproceedings: Institute of Gas Technology - Bureau of Mines Symposium, Morgantown, W. Va., October 19-20, 1965

Longwall mining in bituminous coal mines with planers, shearer- loaders, and self-advancing hydraulic roof supports

Multiple-orifice feeder for fine particles

Field testing the microminerresearch continuous miner

Nonclogging water spray system for continuous-mining machines :installation and operating guidelines

Laser alinement sensor for continuous-mining machines

Reduction of dust and energy during coal cutting using point-attack bitswith an analysis of rotary cutting and development of a new cutting concept

Preliminary economics of mining a thick coal seam by dragline, shovel-truck, and scraper mining systems

Dust control on a longwall face with a shearer-mounted dust collector

Mechanized longwall mining :a review emphasizing foreign technology

Effect of water sprays for respirable dust suppression with a research continuous-mining machine

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

Effect of symmetric bit wear and attack angle on airborne respirable dust and energy consumption

Sideboard device for improved face ventilation in coal mines

A new sonic velocity-logging technique and results in near-surface sediments of northeastern New Mexico

Field test of an automated temporary roof support (ATRS) on a low-coal, single fixed-head roof-bolting machine (squirmer)

Coal cutting mechanics and noise generation

Improved shearer-clearer system for double-drum shearers on longwall faces

Development of protective operator compartment for thin-seam mobile bridge carrier

Framework for autonomous navigation of a continuous mining machine :face navigation


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