Wood mill

Workers look for 4 missing after explosion at UK wood mill

The four — three men and a woman — are believed to have been at the industrial site when an explosion Friday ripped through the mill in the village of Bosley, in Cheshire. Firefighters with a sniffer dog entered the site Saturday.

Paul Hancock, chief fire officer for the Cheshire Fire and Rescue Service, says the longer the four remain missing, the more "it is looking more like a recovery than a rescue operation."