Concerns rise as mining death toll mounts in Queensland.
Union inspectors' planned trip was to be the day after the fatal incident.
David John Routledge the miner who lost his life in the June 26 incident.
Miner killed in an incident at the Middlemount coal mine.
Efforts are underway to free the miner.
722 out of 2109 Australian and foreign owned companies paid no tax in the 2016-17 tax year.