The accident occurred at 5:20 p.m. Friday at the Junde Coal Mine in Heilongjiang province when a rock outburst occurred, China's Xinhua News Agency reported.
The rescued miners were hospitalized in stable condition, medical staff said.
Rescuers were trying to contact the other four trapped miners, Xinhua said.
Texas principal bans speaking Spanish, stirs controversy
Man spent 15 hours in jail for plugging electric car into an outlet at a school