THE USAGE OF A NEW KIND OF MUD SYSTEM IN COAL EXPLORATION IN YANGQUAN NO.5 MINE
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Abstract
So as to tackle the problems arising from the sofisticated strata faced in the coal exploration drilling in the East north and West-north region of Yangquan No.5 Mine,a new kind of mud system which mainly consists of artificated Na-bentonite,GSA, "801" and water was used in the drilling and got success.
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