Modern Engineering Company manufacture Ball mill are used to grind. ball mill consists of a hollow cylindrical Container shell rotating about its axis. The axis of the shell may be horizontal. It is partially filled with Grinding balls.Hanlon Mining Ball Mill Expansion Project. Our Mining Client desired increased production from their milling operations, HE is currently providing the Engineering, Procurement Assistance and Construction Management services to increase the South Mill design capacity from 19,000 to 31,000 TPD.