EE WS SPLITTING ROCK WITH HYDRASPLITTER. HE WAS ATTEMPTING TO SPLIT OFF A PCJ OF SCRAP OFF A STONE & LET THE TOP HEAD MOVE DOWN TO LOW TO RECOVER THE MACHINE WITH HIS HAND ON TOP OF THE ROCK. NO SAFETY RULES WERE BROKEN JUST BAD OPERATOR JUDGMENT. THE MACHINE RECOVERS THE SAME WAY EVERY TIME. THE EE HAD HIS SAFETY EQUIP ON & HAD BEEN RUNNING THE MACHINE FOR MAJORITY OF HIS