The two transport vehicles collided while travelling in opposite directions at the bottom of the drift in an underground coal mine. There were no injuries reported.

Traffic lights in the mine were functional, however, the two drivers failed to observe that other traffic was in the area.

NSW Mine Safety said that when site traffic rules were not followed in underground coal mines, mine operators should investigate why and review those rules as appropriate.

“Mine operators should remind all vehicle drivers of the site traffic rules and that they must be followed and periodically monitor traffic rule compliance at the site through unplanned task observation,” Mine Safety said in an alert.