underground coal mining terms

Pennsylvania Code

(c) For surface coal mine facilities, coal refuse reprocessing facilities and coal mining activity facilities, except for bituminous underground mines, permit application fees collected will be deposited in the Surface Mining Conservation and Reclamation Fund.

Get a Price

Voisey's Bay underground mine on hold | MINING.com

Plans to extend the life of the Voisey's Bay nickel mine in northern Labrador by moving operations underground – already once delayed – are now on hold.

Get a Price

Coal mining | Britannica.com

Coal mining: Coal mining, extraction of coal deposits from the surface of Earth and from underground. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy.

Get a Price

Trump nominates mining engineer to be top federal coal mine ...

President Trump has nominated a coal industry advocate and engineer to be the nation's top mining regulator.

Get a Price

Coal mining heritage - Fake Luxury Watches, Replica Rolex ...

Coal Mining Overview; Geology of the coal measures; List of South Yorks pits in 1987/2004/2011; Waleswood colliery anti closure NUM leaflets 1948; Reclaiming old pit tips

Get a Price

Coal Mining in South Africa – Universal Coal plc

Universal Coal plc Universal Coal is committed to building a sustainable mid-tier coal mining company providing investors with exposure to Southern African coking and thermal coal assets with the potential to develop into projects of regional significance.

Get a Price

Mine Services - Water | Introduction | underground COAL

Water. Large quantities of water are used in mining operations for cooling machinery, dust suppression, cleaning, fire-fighting and drinking. Water supplies are normally carried in steel pipes from surface to points close to the work places, with flexible hoses used for the final connections.

Get a Price

Glossary of Mining Terms - Coal Education

A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back ...

Get a Price

Mining | Britannica.com

Mining: Mining, process of extracting useful minerals from the surface of the Earth, including the seas. A mineral, with a few exceptions, is an inorganic substance occurring in nature that has a definite chemical composition and distinctive physical properties or molecular structure.

Get a Price

Underground coal gasification - Wikipedia

Underground coal gasification (UCG) is an industrial process which converts coal into product gas. UCG is an in-situ gasification process carried out in non-mined coal seams using injection of oxidants, and bringing the product gas to surface through production wells drilled from the surface.

Get a Price

Guyana Goldfields goes underground, stops worrying about ...

The Canadian company is set to invest $120 million to conduct underground gold mining for the first time in Guyana's history.

Get a Price

Coal mining - Wikipedia

Most coal seams are too deep underground for opencast mining and require underground mining, a method that currently accounts for about 60 percent of world coal production.

Get a Price

Glossary of Mining Terms - rocksandminerals.com

Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock or vein material containing no minerals of value, and of strata without coal, or containing coal in seams too thin to be workable.

Get a Price

Cline Mining Corporation • Projects • Mining Terms

Augur (or Punch) Mining A form of unmanned underground mining offering minimal capital cost and relatively short start up periods. Large augers or remote-controlled mine equipment bore into coal seams from roadways established on the floor of surface exposures.

Get a Price