EE WAS POSITIONED NEAR THE REAR OF THE MECVHANICS TRUCK WAITING ON MECHANIC TO REPAIR A LEAK IN A HYDRAULIC FITTING ON HIS CATERPILLAR 992C LOADER. MECHANIC FINISHED BRAZING A HOLE IN THE FITT ING AND AFTER WAITING A SHORT PERIOD OF TIME HE FOUND IT WAS STILL TOO HOT TO HANDLE. HE THEN PRODUCED AND UNMARKED JUG WHICH HE THOUGHT CONTAINED WATER. WHEN HE APPLIED THIS TO THE FITTING A