Abstract: At 11:23 a.m. on January 19, 2018, Employee #1, employed by a construction company, was engaged in the construction of a 9-foot retaining wall. He was working inside an excavated trench, removing forms used for a poured concrete footing and shoveling debris from the trench. The trench collapsed, and a chunk of concrete fell into the excavation and landed on top of Employee #1, pinning him against rebar and crushing him. Emergency services were called, and Employee #1 was transported and admitted to the hospital. At the time of this investigation's closing, Employee #1 was in a coma with injuries that included a crushed torso.