آزمایشگاهی آسیاب
آزمایشگاه آسیاب برش آسیاب آزمایشگاهی Underhand Cut and Fill Mining as Practiced in Three Deep CDC. Spokane Research Laboratory, NIOSH Underhand cut and fill mining methods are used at the Lucky Friday, Stillwater, and Galena mines in the stope cut in a predetermined pattern prior to backfilling the cut with cemented mill tailings.