Four people, who illegally entered an open cast mine — which was not in operation— and were feared trapped, excavated a route through the structure to return to safety in Bokaro early on Monday morning, officials said.
They were trapped for at least 30 hours.
All four, residents of Tilataand village of Chandankyari block, on Saturday entered the mine through one of the entrances that collapsed and trapped them, police said.
Administration officials, police personnel, National Disaster Response Force (NDRF) and the Bharat Coking Coal Limited (BCCL) mining officials were deployed to rescue the four but did not make headway. The mine is owned by BCCL.