EE WAS POKING THE TOWER WITH AN AIR LANCE AND HAD NOT ESTABLISHED A POKE HOLE BEFORE TURNING THE AIR ON. THIS CAUSED THE HOT KILN FEED TO BLOW BACK INTO EE, RESULTING IN 2ND/3RD DEGREE BURNS T O NECK & CHEST AREA. WHEN EE TURNED HIS HEAD THEHOT MATERIAL BLEW UNDER HIS FACE SHIELD.