EMPLOYEE INITIALLY STATED HE WAS WALKING ALONGSIDE THE NO.6 BELT AND DRAGGING A ROCKDUST HOSE WHEN HIS RIGHT KNEE STARTED HURTING. MEDICAL RECEIVED 10/18/01 SHOWS, 1.FINDINGS COMPATIBLE WITH P REVIOUS MENISCECTOMY. 2.SMALL CYST ADJACENT POSTERIOR CRUCIATE LIGAMENT. 3.MILD DEGENERATIVE CHANGES. HE HAD RIGHT KNEE SURGERY 1989, RIGHT KNEE STRAIN 1987, RIGHT KNEE INJURY 1982. THIS IS N