The trapped miners were brought out on stretchers through a tunnel excavated during the rescue early today morning.
A cave-in had occurred at a stannum mine in Lianghe County at around 1 pm, local time, on Saturday, when the miners were working underground, state-run Xinhua news agency reported.
Local authorities attributed the accident to the effect of a mudflow triggered by continuous downpour in the county.
Some ventilation equipments in the mine still worked after the cave-in.