Abstract: Employee #1 and a coworker, both city employees, were collecting refuse with boom truck #86411, plate #B81943, gross vehicle weight of 56,000 pounds. The employees observed that the truck would not move. At 12:55 p.m., the employees reported the trouble to their dispatcher and were told that the vehicle maintenance personnel would be notified. At 1:05 p.m., the employees attempted to fix the problem before the mechanics' arrival by bleeding air from the air brakes tank underneath the truck. The coworker pulled the truck forward while Employee #1 was underneath it bleeding air from the brakes air tank. Employee #1's lower body was crushed by the truck's rear wheels.