Rescuers have reached an area where 22 miners are believed to be trapped following a coal mine blast in northeast China's Heilongjiang Province, rescue headquarters said Thursday.
The explosion occurred at a private coal mine in Qitaihe City at 9 p.m. Tuesday, trapping 22 workers underground.
The flames in the shaft have been put out, and the ventilation system in some areas has resumed. Rescuers have arrived at the main shaft, where experts said the miners are likely trapped.
The rescue efforts have been frustrated by debris that has piled up in some tunnels due to the blast.
An initial inquiry showed that the blast was an accident and that the mine is unlicensed. At least two people are being questioned by police over the accident.
