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[en] If yield (>75%) of <150mm ore partical size is used as evaluation criteria of constructed heap effect in stope leaching operations, all stope leaching operations are successful. But, which is the best? We do not know. A new evaluation method is proposed, that is using d75%(screen size of 75% ore passing) as evaluation criteria. The effect of constructed heap in different stope leaching operations can be evaluated by this method, and we can know which of these operations is the best. (authors)
Journal
Uranium Mining and Metallurgy; ISSN 1000-8063; 
; v. 28(4); p. 172-175
; v. 28(4); p. 172-175