Rescuers spent hours trying to reach him,but were unable to because the area was unstable.
Isaac Region mayor Anne Baker said the tragedy had rocked the small community.
"As a coal-producing region whose communities and history is closely tied to the workforces of our local mines,this tragedy reaches deep into the hearts of all our residents,"she said.
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"Whether you’re a relative,friend or neighbour,there would be very few in Middlemount who do not have a connection to the mining sector.
"Whilst the circumstances of this tragedy will be subject to investigation by the mine operator and authorities,right now our focus is on supporting the close-knit Middlemount community in its grief.
She said the council"shared in the pain of their loss as it is one that all of our communities have known".