Steel Ball Used in Ball Mill For Pulverizing Gold Ore in ...
Ten years ago a trucker was hauling a load of 44,000 pounds of hardened steel balls to a ball mill in Ontario, Canada. These balls were to be used in the mill to pulverize gold ore. As the trucker drove up Birch Hill between Ashland and Hurley, Wisconsin, the doors on back swung open and balls began rolling out onto the road.