Bearings can use steel or ceramic balls, but that begs the obvious question: which is better? Should you stick with ...

Iron mined in northern Minnesota is turned into steel, which is turned into cars and appliances, which are turned into scrap, which is recycled into steel, which is turned into grinding balls, which ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Cellphone video captured the moment a ...