EE HAD BEEN OPERATING A 4600 MANITOWOC CRANE IN THE LIMESTONE QUARRY. WHEN HE WENT TO DISMOUNT THE MACHINE AT BREAK TIME, HE GRABBED THE HANDRAIL AND IT BROKE LOOSE. THIS CAUSED THE EE TO SLIP . HE CAUGHT HIMSELF BEFORE FALLING, BUT TWISTED HIS BACK. HE WAS SENT TO PHYSICIAN AND TREATED WITH OSTEOPATHIC MANIPULATION ON MORE THAN ONE OCCASION.