Previously, Xinhua had reported that 15 miners were dead, while 18were unaccounted for. Two had managed to escape the mine, the agency said on Monday.
Rescue work has now concluded and the dead bodies have been moved away from the site, Xinhua said Wednesday. More than 200 rescue workers were involved in the search.
China's mines are known for being among the world's most dangerous. Thousands die every year in mining accidents, a much higher rate than seen in other countries with similar mining industries.