The explosion occurred this morning in Dahebian Coal Mine in Liupanshui city when 41 people were working underground.
The blast killed seven workers and wounded 11 others.
Twenty-three workers have been lifted out of the shaft safely, state-run Xinhua news agency reported.
The Dahebian coal mine belongs to the state-owned Guizhou Shuicheng Mining Company, which has an annual output of 900,000 tonnes.
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