EMPLOYEE REPORTED: A 4-MAN CREW WAS WORKING IN THE MINE SLOPE WASHING DOWN THE FLOOR. HE WAS LOCATED AT THE BOTTOM AREA KEEPING THE DRAIN TROUGH CLEAR OF MATERIAL. A HOIST ROPE WEAR PAD WAS ST RUCK BY THE HIGH PRESSURE WATER STREAM, IT BOUNCED DOWN THE SLOPE AND STRUCK HIS RIGHT ARM RESULTING IN A FRACTURE TO BOTH BONES IN HIS RIGHT ARM.