Abstract: Employee #1 was attempting to remove the end cap from a hydraulic cylinder. The cap is threaded onto the end of the 28 foot cylinder. When the cap would not come off, Employee #1 welded parts to the cap for better leverage. The cap still would not move, even with repeated blows with a hammer/mallet. Employee #1 then attempted to remove the cap by applying heat from an oxygen/acetylene torch assembly. He was unsuccessful. Employee #1 placed the cylinder in a metal cutting saw in an attempt to cut the cap off. During the cutting process, the cylinder exploded. Employee #1 was struck by flying parts and killed.