Mineral Ball Mill It usually adopts wet type ball mill in the mineral production. The grate and overflow type ball mills are the most universal equipment in the mi Overflow Type Ball Mill ore benefication of metal mine, and nonmetal mineral hill.Establishing baseline prices for appraisals. The Mine Mill Equipment Cost Guide covers than 3,000 items of mobile, portable, and stationary equipment commonly required by mining and milling operations. Select from a full range of sizes and types, with productivity information for many items. View the Full List of Equipment.