The coal mine, owned by China's National Coal Group Corp in Yulin City of northwest China's Shaanxi Province, was still under construction when the accident happened on Wednesday.
Thirty-seven workers were in the shaft when a major cement pipeline detached.
Rescuers have retrieved 11 bodies from the coal mine where the pipeline collapsed.
Of the 26 people who were brought out shortly after the accident, two were confirmed dead and 24 people were pulled out alive, state-run news agency Xinhua reported.
Rescuers are still searching for the two missing workers, though chances of finding anyone alive are slim.