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free hd videos of open shaft coal mining

Open-pit mining - Wikipedia, the free encyclopedia

Open-pit mining, open-cut mining or opencast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or ...

Surface mining - Wikipedia, the free encyclopedia

"Mountaintop removal mining" (MTR) is a form of coal mining that uses explosives to blast "overburden" off the top of some Appalachian mountains.

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Coal Mining - Coalwood, West ia

Coal Mining. Types of Coal Mines. There are four main types of coal mines: shaft mine, slope mine, drift mine, and surface (open-cast) mine. The mine at Coalwood was ...

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drive (dr v) v. drove (dr v), driv·en (dr v n), driv·ing, drives. v.tr. 1. To push, propel, or press onward forcibly; urge forward: drove the horses into the corral.

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drive - definition of drive by The Free Dictionary

drive (dr v) v. drove (dr v), driv·en (dr v n), driv·ing, drives. v.tr. 1. To push, propel, or press onward forcibly; urge forward: drove the horses into the corral.

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