A maintenance mechanic suffocated when his chest was squeezed between the rear of a vacuum cooler tube and the tube's door. His foreman, working for a produce wholesaler, had asked the victim to see if replaced valves were operating properly. A pneumatic valve raised and lowered the tube's 2,000-pound (907-kilogram) door. Using the valve's control, the victim partially raised the door. An air line on the pneumatic valve later blew off, lowering the door. The foreman heard the rush of air and found the victim pinned. The foreman handheld the air line on the valve and raised the door, allowing the victim […]