deep mining


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deep mining

[′dēp ′mīn·iŋ]
(mining engineering)
Exploitation of mineral or coal deposits at depths in excess of 3000 feet (900 meters).
References in periodicals archive ?
HACs offer a more energy efficient and reliable approach to air compression, but historically, they have relied on the existence of a nearby water source, which was one of the factors that prevented their widespread adoption in deep mining applications.
For ultra-deep mining, reducing the energy costs and improving the ventilation will make deep mining more financially feasible in the future.
Unite T&G Scottish Opencast convener Jim Walls said: "A whole generation has passed since deep mining operations were closed down.
The last task involves the development of an integrated geological and geotechnical database for deep mining areas.
From a cost-saving perspective, developing techniques to advance underground more quickly can make deep mining projects--where costs increase with every added metre of depth--more viable.
Interim profits at the group's deep mining arm were knocked by pounds 20m because of the Daw Mill stoppage, although production resumed there last June and the division has since made operating profits.
The UK's biggest coal producer said yesterday that it had almost trebled interim pre-tax profits as its move into property development helped to offset continued declines in deep mining.
THE UK's biggest coal producer has almost trebled interim pre-tax profits as its move into property development helped offset continues declines in deep mining.
The group's deep mining operation was still "marginally" profitable in the fourth quarter, according to the statement.
Mining Innovation (CEMI) plans to launch a Canada-wide request for proposals by late September for projects that would fall under its $46-million Ultra Deep Mining Network.
Woodhorn Colliery was turned into a mining heritage museum by Wansbeck District Council in the late 1980s after the pit closed in 1982 as part of the massive rundown of the region's deep mining industry.