Australia's second largest open-pit mine is adjacent to the Yallourn power station, and annually mines around 18 million tonnes of high moisture brown coal. The mine provides a continuous source of fuel to the power station, and has sufficient reserves to meet the facility’s projected needs until 2032.
While True Energy retains ownership of the mine, it is operated in an alliance by the Roche Thiess Linfox joint venture.
A mine collapse cut power to the Yallourn mine and forced it to close in 2007. The collapse allowed the Latrobe River to flow directly in to the mine, which caused substantial damage to conveyor systems and facilities. While no one was injured in the collapse, the Department of Primary Industries said that the incident posed a serious risk to safety. An inquiry into the incident found the failure occurred because of water pressures in the interseam clays underlying the coal.