Munmorah Power Station's remaining boiler house and coal hoppers have been simultaneously demolished via controlled explosive demolition techniques. The blast was the final explosive demolition event to be carried out during the course of the power station's removal, following the toppling of the chimney stacks and the other boiler house last year.

The task was undertaken by specialist demolition and remediation contractor, Liberty Industrial. Contracted by the power station's owner, Generator Property Management, Liberty Industrial has been carrying out the demolition of the NSW power station since July 2016.

The undertaking is considered to be the largest explosive demolition event to be carried out in Australia to date, with the toppled structures weighing a staggering 32,000 tonnes.

Following the record breaking explosive demolition of the power station's 23,000-tonne boiler house carried out in May last year, the demolition would constitute the largest explosive demolition undertaken anywhere in Australia to date.

Liberty Industrial used a controlled explosion to bring the 60-metre high, 32,000-tonne structure down. The demolition was achieved with an engineered induced collapse demolition technique. Months of planning and preparation has taken place in the lead up to this event, which culminated in the detonation of strategically positioned explosives used to collapse the structure and reduce it to a suitable height for processing with heavy machinery.

Liberty Industrial director Simon Gill praised the project team for their efforts.

"Wonderful to see the final explosive demolition event safely completed at Munmorah Power Station," he said.

"Our site team has worked tirelessly over the past three months in preparation for this event. The success of this event is testament to their dedication and hard work, and further highlights Liberty Industrial's expertise in the field of explosive demolition."

Liberty Industrial's fleet of heavy duty demolition excavators including a custom built 260-tonne demolition excavator will process the resulting debris before the material is removed from site for recycling.

To date 35,000 tonnes of demolition material has been recycled with a further 20,000 tonnes estimated to be removed for recycling prior to the project's completion.

The removal of the power station is expected to be completed by September 2018.