TAIYUAN - Seven miners who were trapped for nearly two days after the roof of a coal mine collapsed in North China's Shanxi province were rescued on Wednesday, local government sources said.

The miners walked out of the pit by themselves with the assistance of the rescuers in the early hours of Wednesday morning, sources with the Zhongyang county government said.

All of the seven, who are now under medical observation in a local hospital, were trapped Monday morning after a 10-meter-long mine roof collapsed at the Nuanquan Coal Mine.

Thirteen miners were working in the mine when the collapse occurred. Six of them had been pulled up from the mine.