Gaining access to very deep coal seams by carrying explosive in

Details Gaining access to very deep coal seams by carrying explosive in Gaining access to very deep coal seams by carrying explosive in

1982-02-12

1984-05-29

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

Stabilizing underground structure

299 13, 299 18, 166299, E21C 3712

Patent

active

044510888

ABSTRACT:
A process for gaining access to the coal of very deep seams, and for extracting this coal with the aid of a conveying liquid, which is fed to the seams via boreholes and is thence brought back again to the surface with coal which has been detached, wherein agents for detaching and breaking up the coal are admixed to the liquid.

REFERENCES:
patent: 3072054 (1963-01-01), Ashbrook
patent: 3874733 (1975-04-01), Poundstone et al.
patent: 3964792 (1976-06-01), Archibald
patent: 4044563 (1977-08-01), Hurst et al.

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