THE DRIVER POSITIONED HIS TRUCK IN THE PIT TO BE LOADER, AND REACHED OVER TO THE DASH TO GET HIS LOAD COUNT REPORT AS THE LOADER WAS APPROACHINGTHE TRUCK TO DUMP THE BUCKET WITHT HE LOADER. THE OPERATOR DROPPED THE BUCKET FULL OF COAL STRIKING THE TOP OF THE BOX CAUSING THE TRUCK TO BOUNCE, RESULTING IN WHIP LASH TO THE TRUCK DRIVER.