Abstract: At approximately 12:45 p.m. on August 15, 2011, Employee #1 was part of a crew in the first stages of rigging down. The hoist on the off-drillers side and the boom hoist had been rigged to a manifold to remove it from the rig floor. After breaking all connections on the standpipe, Employee #1 signaled for the manifold to be lifted. When it became stuck, he signaled the hoist operator to stop. Employee #1 then walked over to the manifold, bent over, and pushed on it. The manifold broke free suddenly, struck him, and knocked him over a guardrail. Employee #1 fell 26 ft to the rig floor. He was initially conscious and complaining of back injuries. Employee #1 was transported to University Hospital, where he died.