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AbstractAbstract
[en] An underground carbonaceous deposit containing other mineral values is burned in situ. The underground hot zone is cooled down to temperature below the boiling point of a leachig solution. The leaching solution is percolated through the residial ash, with the pregnant solution recovered for separation of the mineral values in surface facilities
Original Title
Patent
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Secondary Subject
Source
12 Sep 1978; 6 p; US PATENT DOCUMENT 4,113,313/A/
Record Type
Patent
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