Abstract: On June 26, 2008, Employee #1, #2, and #3, a sub-contracted crew of welders, were dismantling piping at an oilfield gas processing plant, which had been shut down for several years. They were removing valves from around a bank of heat exchangers to recover them for scrap. They were not wearing flame resistant clothing and had no written demolition plan. Using a wand torch with propane/oxygen, they made cuts to ventilate the 10-inch piping. When a lower cut was made, trapped residual natural gas liquids sprayed out, coating them and ignited. They were immersed in a fireball and were severely burned. Employee #1 and #2 were hospitalized with burns, and Employee #3 died.