EE WAS OPERATING A 150 TON COAL HAULER. HE WAS WAITING AT THE CAT 5230 SHOVEL TO BE LOADED WHEN HE TOOK A DRINK. THE SHOVEL DROPPED A BUCKET LOAD OF COAL INTO THE BED OF THE TRUCK. THIS JARRED THE TRUCK ENOUGH THE EE CHIPPED HIS FRONT TOOTHON A GLASS BOTTLE.