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mining

(Encyclopedia)mining, extraction of solid mineral resources from the earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminum; precious stones, such as d...

coal mining

(Encyclopedia)coal mining, physical extraction of coal resources to yield coal; also, the business of exploring for, developing, mining, and transporting coal in any form. Coal has been historically important indus...

mining engineering

(Encyclopedia)mining engineering: see engineering. ...

strip mining

(Encyclopedia)strip mining: see coal mining.

placer mining

(Encyclopedia)placer mining: see mining.

drainage, in mining

(Encyclopedia)drainage, in mining, removal of water seeping into shafts and other underground mine workings from the surrounding ground. Unless seeping water is removed continually, it may endanger haulage and mini...

long-wall mining

(Encyclopedia)long-wall mining: see coal mining. ...

underground coal mining

(Encyclopedia)underground coal mining: see coal mining. ...

Kirkland Lake

(Encyclopedia)Kirkland Lake, mining town, E Ont., Canada. An important gold-mining center, gold was discovered there in 1911 and again in the 1980s at Harker. The mining of iron ore and tourism are two other import...

Dąbrowa Górnicza

(Encyclopedia)Dąbrowa Górnicza dôNbrôˈvä gôrnēˈchä [key], Ger. Dombrowa, city, Śląskie ...