Twelve miners died Friday in a methane explosion at the Wujek-Slask coal mine in Ruda Slaska-Kochlowice, southern Poland, Edyta Tomaszewska, spokeswoman for Poland's mines authority, said.
"Twelve coal miners are dead and 15 are in serious condition," Tomaszewska told AFP via telephone. A total of 30 miners were hospitalised after the blast which ripped through the mine, she added.
Wujek-Slask mine spokesman Andrzej Bielecki said earlier 38 miners were underground in the area when the blast occurred 1,050 meters (nearly 3,500 feet) underground.
Twenty-nine escaped to the surface while the remainder were evacuated by mine rescue workers, Bielecki said.
The death toll could rise further as several miners sustained serious burns, he said.