The male workers, aged 50, were airlifted to Rockhampton Hospital yesterday afternoon after an explosion in a 50m high mine hopper at the opencut Boundary Hill Mine in Biloela.
News.com.au reports the Queensland Ambulance Service confirmed one man suffered burns to 37% of his body, including his legs, face, back and arms.
The other worker suffered burns to 10% of his body including his back, elbows and head.
Both workers will require specialist treatment but are expected to survive their injuries.
ABS News reports Gladstone Police said the men were welding at the time of the explosion and the police considered it an industrial accident without suspicious circumstances.
The Queensland Mines Inspectorate will oversee the investigation into the accident that began at the site this morning.