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How about a ball from a ball mill used to pulverise ? Pete ----- Original Message ----- From: "Shawn" <[log in to unmask]> To: "Pete Mason" <[log in to unmask]> Sent: Friday, June 11, 2004 9:53 PM Subject: Strip Mining in Pennsylvania and a strange object give to me. > I have been sent an item through the mail with a challenge to figure out > what it is. My father in law sent it with only one hint.."Its from the > hills of Pennsylvania.". > > He was a strip miner where he lived, Clymer PA, and he is a civil war buff. > My Initial impression was that this item was a cannon ball. > > Description: Round steel ball (magnets stick to it) > 3 1/4" inch in diameter > Weight: 12-15 lb > Its Rusted and has small 1" long symmetrical grooves about16th > of an inch deep at a 45 degree angle down facing each other in > 2 places on the surface. These are faint, but you can see them > in good light. > > Because its steel, I believe its a ball bearing of some type. Does > equipment exist in the realm of strip mining that would require a ball > bearing of this size? > > I realize this is vague, thank you for any information/time in advance.