THAWING OUT DIESEL WATER PUMP. PUT WEED BURNER TORCH IN PUMP CHAMBER TO THAW ICE. EXCESS PORPANE FROM BURNING TORCH FILLED UPPED CHAMBER WITH GAS. WHEN PULLING TORCH OUT IT IGNITED EXCESS GAS RESULTING IN A FLASH BACK EFFECT. FLAME ROLLED OUT AND SINGED EYE LASHES AND EYE BROWS. REDDENED EYES.