On Monday rescuers had found no sign of the Kaiyuan Colliery workers.
Rescuers are continuing attempts to find the four miners.
The accident occurred on the same day a tunnel collapsed in a coal mine near Beijing, trapping 10 miners.
FOUR miners have been trapped in a Henan Province coal mine in China after gas leaked into the mine on Sunday, Xinhua News Agency reported.
On Monday rescuers had found no sign of the Kaiyuan Colliery workers.
Rescuers are continuing attempts to find the four miners.
The accident occurred on the same day a tunnel collapsed in a coal mine near Beijing, trapping 10 miners.
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