The mine, previously known as the Wyee longwall is located east of Wyee on New South Wales central coast, will now run as an underground “super-panel” continuous miner operation.

Planned productivity will be comparable to the company’s other low-cost mines such as Charbon continuous miner operation – which also employs a super-panel. This method uses two continuous miners with up to four shuttle cars and one crew to ensure production is virtually uninterrupted.

Start-up is expected next month using existing infrastructure previously utilised by Wyee Colliery.

The company said the planned working area boasted favourable conditions.

Initially output will be used by the adjacent Vales Point Power Station, however in line with Centennial’s move to boost export potential, some of the production may go to foreign markets.

Production from Mannering forms part of Centennial’s full year production target of 17.6 million tonnes (15.9Mt equity share).