PERSON WAS CHANGING WATER SPRAY TUBE ON FRONT OF MINER HEAD WHEN A ROCK SLID DOWN THE MINER HEAD AND PINNED HIS HANDS TO THE MACHINE. HE GOT HIS HANDS OUT AND FELL BACKWARDS. HE WAS CHECKED IN E.R. AND RELEASED FOR WORK. HIS LEFT KNEE CONTINUED TO BOTHER HIM AND HE WENT TO AN ORTHOPEDIST AND HAND TO HAVE SURGERY. FIRST DAY OFF 4/26/02