EE WAS PERFORMING WATERJET CLEANING OF THE MMD- SECONDARY CRUSHER USING THE WOMA HIGH PRESSURE PUMP. AFTER FINISHING THE CLEANING HE ACCIDENTALLY SWIPED THE WATERJET OVER HIS LEFT FOOT WITH A PRESSURE OF 7,000 PSI, THE WATERJET SPRAY CUT THRU BOOT BOTH IN THE STEEL TOE SECTION AND A SMALL SECTION ABOVE THIS WHERE THERE WAS ONLY LEATHER ALLOWING A STREAM OF HIGH PRESSURE WATER