Four miners remain in critical condition with a fifth – reportedly in a stable but serious condition - still receiving treatment, after they were caught in an explosion at Grosvenor coal mine in central Queensland. The miners have been taken to the Royal Brisbane and Women’s Hospital where four have been placed on ventilators. All five workers - believed to be aged in their forties and fifties - suffered significant burns to their upper bodies and airways from the explosion which was reportedly triggered by an ignition of gas. Two mine inspectors are examining the scene with more expected to join the investigation team today. Image: News Corp Australia