A CUSTOMERS TRUCK STALLED & EE JUMPED OUT OF THE LOADER & RAN UNDER THE CRUSHER TO GET A CHAIN TO PULL THE TRUCK OUT OF THE WAY. HE RAISED UP TOO SOON UNDER THE CRUSHER & HIT HIS HEAD & NECK , KNOCKING HIM FLAT. HE RECEIVED A 3/4"" CUT ON THE TOP/BACK OF HIS HEAD.