EMPLOYEE WAS SENT TO THE TAILINGS DAM TO WORK ON A RUPTURED RADIATOR ON THE AIR BOAT. WHEN THE RADIATOR RUPTURED, THERE WAS ANTI-FREEZE AND WATER SPILLED ON THE BOTTOM OF THE BOAT. HE SLIPPED WHEN GETTING IN THE BOAT, TWISTING HIS ANKLE. INJURY RESULTED IN A FRACTURE OF A NON-WEIGHT BEARING BONE ON HIS RIGHT ANKLE.