Abstract: At approximately 2:15 p.m. on June 21, 2011, Employee #1 was repairing a pipeline for a new housing development. Employee #2 laid a pipe in the trench using an 8 ft. high trench box. The foreman noticed a separation between some previously laid pipe and had his crew pull out the affected sections of pipe. He went to his truck to gather some testing equipment for the pressure test that needed to be performed on the remaining sections of piping. Employee #1 went into the trench to set up for the test, the north wall caved in. There was no cave-in protection other than sloping the top 3 to 4 ft. portion of excavation. Employee #1 was killed when buried. The foreman had told Employee #1 prior to leaving the scene not to enter the trench without having the trench box reinstalled in the trench.