Abstract: At approximately 1:00 p.m. on November 13, 2014, an employee/owner of the company and several workers were working to repair a deteriorating concrete block retaining wall. The employee was using an electric chisel to remove decorative stone veneer from a deteriorated retaining wall. The wall maintained several fissures caused by back pressure (fill soil) and poor drainage. The workers were working in front of the wall using electric chisels and hammer drills inducing vibration. The wall began to collapse and the employee fell to a lower level and the retaining wall followed behind crushing and killing him.