### Paper # 25 - Copper Mountain Overview on the Grinding ...

COPPER MOUNTAIN: OVERVIEW ON THE GRINDING MILLS AND THEIR DUAL PINION MILL DRIVES ... FL ball mills. Figure 1 - Overview grinding circuit The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet] long. ... If the plant expects they will need slow turning capabilities for any . 7