EE WAS REPLACING GRATING ON A FLOATING SEALING WATER PUMP. THE HOSE WAS STRETCHED TAUT, HAVING CAUGHT ON EDGE OF SLED AND AS EE TURNED HIS BODYTO MAKE A CUT TO TRIM GRATING, THE MOVEMENT OF H IS BODY CAUSED THE TORCH TO PASS OVER HIS LEFT HAND RATHER THAN THE CUT HE INTENDED TOMAKE. THIS RESULTED IN 1ST & 2ND DEG BURNS TO APPROX 25-30% OF HIS HAND FRONT & BACK INCLUDING LITTLE, RI