Underground Mine


Also found in: Acronyms.

Mine, Underground

 

(in Russian, shakhta), a mining enterprise that extracts minerals by underground methods and ships them to a consumer or an ore-enrichment plant. An underground mine includes both surface structures—for example, headframes, headhouses, and storehouses—and all the underground mining excavations that are used to work a deposit within a mine area. Such a mine is a mechanized and automated enterprise equipped with efficient machinery and devices for the extraction and hauling of minerals, for the sinking of mining excavations, for the removal of mine water, and for ventilation. Underground mines that work large deposits have lives of 50–70 or more years.

The largest underground coal mine in the USSR is the Raspadskaia Mine, which is in the Kuznetsk Coal Basin and has a projected eventual output of more than 7 million tons a year. The largest underground iron mine in the USSR is the Gigant Mine, which is in Krivoi Rog and has a projected eventual output of 12 million tons a year. The deepest underground mine in the USSR is the Academician A. A. Skochinskii Mine, which is in the Donets Coal Basin and is 1.2 km deep.

The deepest underground mines in the world are gold, silver, and diamond mines; they are 4–4.5 km deep. They include the Champion Reef gold mines in India and the Witwatersrand gold mines in the Republic of South Africa.

References in periodicals archive ?
was preparing in July to start construction on its new Poplar Grove underground mine near the Green River in McLean County.
RGLD will provide Golden Star with a USD130 million advance payment to be used for the development of underground mines and general corporate purposes
Applications for uGPS Rapid Mapper include development pick-ups, volumetric analyses and shaft scanning in underground mines.
Rozik said that the firm now was focusing on checking on the safety of all its underground mines and would conduct an investigation over the incident.
Mining is scheduled to commence this month at the second underground mine at Westralia, Allanson.
The company's Casselman underground mine in Garrett County, Maryland, meanwhile, has successfully completed a challenging geologic transition under the Casselman River.
The previously announced mining study outcomes show that the Big Bell underground mine can become the backbonefeedstock for a processing facility at the Central Murchison Project producing at approximately 500,000 tonnes perannum after an initial 18 month pre-production period.
Grande Cache Coal Corporation (TSX: GCE), a Canada-based company that mines metallurgical coal, has announced an intention to seek regulatory approval for the No# 12 South B2 Underground Mine.
Another important development is the deepening of the Hoyle Pond underground mine.
11, 2000, pressure from the full impoundment caused the barrier wall between the slurry pond and the underground mine to collapse.
5 billion, 1,500 MW coal-fired power plant and a 6 Mt/y underground mine near Central City in Muhlenberg County, western Kentucky.
An Alpha spokesperson said the Worker Adjustment and Retraining Notification (WARN) Act notices were distributed May 22 to affected workers at Rockspring Development's Camp Creek underground mine and processing plant.

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