Sentence examples for coal underground from inspiring English sources

Although hydraulic mining is sometimes used to mine coal underground, its primary application is on the surface, where it is a practical way to mine relatively fine-grained, unconsolidated material from placers, tailings, alluvium, and lateritic deposits.

Harnessing wind power is part of a new policy plan by the Mongolian government, which is looking for innovative ways to diversify into renewable energy, despite a wealth of coal reserves — Mongolia has about 100 billion tons of coal underground.

He added that the amount of coal underground goes "all the way to Oxford".

High intensity extraction of coal underground results in large scale ground settlement, barren farmland, and decrease of cultivated land.

This technology can gasify coal underground which cannot be mined by current methods from economic and technological reasons.

Until one is found, any attempts to gasify coal underground will either remain theoretical or will exacerbate the already grave problem of CO2 emissions.

In situ gasification is accomplished by controlled, incomplete burning of a coal bed underground while adding air and steam.

In the spring, lightning would sometimes ignite the coal deposits underground, firing the clay above them into brick-red porcelainite.

WHEN men earned a living hewing out coal deep underground, Barnsley was a prosperous place, if not very pretty.

There are also technologies that will let us get at coal deep underground, and at coal bed methane, extracted from coal seams.

Then air or oxygen is added to one pipe and the coal ignited underground.