FREMONT, Ohio (AP) - Authorities say one worker has died in a roof collapse at a sauerkraut factory in northern Ohio. Fremont Police Chief Tim Wiersma says three others were injured in Wednesday's accident. One of them was trapped for about four hours. Crews are still trying to remove the body of the man who died in the collapse. He and 44-year Todd Michael worked for B&W Welding and were replacing columns inside the building that support the roof at the Fremont Co. A third B&W worker was taken by medical helicopter to a hospital, and one Fremont Co. worker also was taken to a hospital, treated and released. The Fremont Co. is about 40 miles southeast of Toledo. It makes sauerkraut and bottles ketchup and barbecue sauce.