EE HAD JUST COMPLETED WASHING A CAT 793 TRUCK TIRE THAT WAS BEING HELD VERTICAL WITH A TIRE HANDLER. AS THE ITRE WAS BEING TAKEN AWAY, THE TIRE FELL FREE FROM THE TIRE HANDLER CLAWS. THE TIRE ROLLED ON ITS END ABOUT 6 FT AND STRUCK THE EE AND A SERVICE TRUCK. EE SUFFERED 3 FRACTURED RIBS AND AN ABRAISON ON HIS FACE.