(CNN) -- Three people were missing early Tuesday after a coal mine gas blast in China's Shanxi province killed at least 11 people, China's state run news agency reported.
Sixteen miners were working in the area Monday morning when the blast slammed through a 300-foot mine shaft owned by Xingguang Coal Industry in Jinzhong City, Xinhua reported.
Two workers were rescued, the agency said, and 11 bodies were recovered.
Rescuers were trying to push a pipe into the shaft to bring air to possible survivors as well as to dilute gas. Rescuers won't be sent underground until a plan is worked out later Tuesday.
Xinhua reported that the mine launched construction earlier this year aimed at increasing its annual production from 300,000 tons to 1.2 million tons.
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