On March 11, 2002, a 32-year-old male plumber (the victim) died after being crushed between a tandem scissors lift platform and the I-beam frame of a mobile home. The victim worked as a plumber for a mobile home manufacturing company, and he had crawled under a mobile home that was nearly finished to complete a measurement. A few minutes later the company’s tandem scissors lift operator, who had not seen the victim go under the home, began to raise the home to provide adequate space for workers to install wheels on its axles and to install a tongue assembly at the front of the home. The victim was caught between the scissors lift platform and the I-beam when the scissors lift was raised. Coworkers and the victim yelled to the operator to stop. When the lift was lowered, the victim was able to wiggle free. After seeing that the victim had been injured, a supervisor ran to the office and directed the receptionist to call 911. The company safety manager/nurse responded immediately and provided emergency care. Emergency medical services (EMS) personnel responded within minutes and provided emergency care, then transported the victim by ambulance to a county hospital. Shortly after his arrival at the county hospital, the victim was airlifted to a city hospital where he was pronounced dead later that day. NIOSH investigators concluded that, to help prevent similar occurrences, employers should: 1) incorporate specific safe operating procedures for controlling hazardous energy into their scissors lift safety policy, including individually assigned locks and keys to secure energy control devices, and train all workers in the new procedures; 2) evaluate and upgrade warning systems as needed to maximize their effectiveness.