Four miners were trapped in a Siberian coal mine for a second day yesterday after a methane explosion caused a ceiling to collapse, killing at least 11 workers.

　　The explosion ripped through the Ziminka mine in the Kemerovo region mining town of Prokopyevsk, about 3,000 kilometers east of Moscow, on Monday. Two miners were rescued and hospitalized, said Marina Ryklina, the spokeswoman for the Emergency Situations Ministry. Three miners were able to crawl out of the collapsed area on their own, and the bodies of 11 who died had been recovered by yesterday.