The mine, which suffered from a roof fall in November last year, is now focused on returning to full productivity of more than 5 million tonnes per annum.

“Anglo American’s number one priority is the safety of our people,” a spokesperson for Anglo American told ILN.

“Operations have safely resumed underground at Moranbah North mine and we are nearing the completion of rectification work.

“Throughout the recovery period at Moranbah North we worked closely with our workforce and consulted with our industry safety and health representatives, the Mines Inspectorate, DEEDI, the Construction, Forestry, Mining and Energy Union and other employee representatives.”

A rally organised by the CFMEU was held at Moranbah North last week in protest against alleged unsafe work culture.

“At this pit alone [Moranbah North] we have seen three major roof falls and numerous high-potential incidents in the last five years,” the union reportedly told the AFR.

“If companies continue to throw safety by the wayside in a mad grab for profits, we are staring down the barrel of a disaster.”

On November 7, a drift at Moranbah North suffered a roof collapse, which is believed to have cost Anglo at least 40,000t in lost production.

Speaking about the incident, an Anglo American spokesperson told ILN the operations at Moranbah had halted at the time “due to a slump of ground in a conveyor drift”

No one was injured and an investigation into the incident commenced.