During FY22, mining occurred in the Windmill, Calool, Roxburgh, Ayredale and Saddlers pits. Mining has occurred at a lesser intensity than the maximum rate of extraction approved by the Project Approval. Overburden was placed on the conveyor corridor, CD areas, VD areas, Saddlers North and Belmont.
Thiess, a subsidiary of the CIMIC Group, operates under a total services contract to mine the Ayredale and Roxburgh pits, located in the southern areas of the Mt Arthur Coal mine. Overburden and interburden material was removed by excavator/shovel and transported via rear dump truck to overburden emplacements, including visual dumps 4 to 5 (VD4 to VD5), contingency dumps 1 to 5 (CD1 to CD5), Out Of Pit Dump North (OP1N), conveyor corridor dump (CC1) and Saddlers dump. Raw coal was extracted by excavator and transported to the CHPP by rear dump truck.
During three-year term, approximately 65 million tonnes of ROM coal is planned to be mined using truck and shovel and/or excavator methods for an equivalent 47.4 million tonnes of product coal. This method is consistent with current and previous site open cut operations. During this Annual Forward Program (AFP) period, mining is proposed to continue within the extended pit shell of Mt Arthur, consisting of:
• Windmill Pit;
• Calool Pit;
• Roxburgh Pit;
• Ayredale Pit; and
• Saddlers Pit.
Prior to excavation of a new open cut strip, pre-stripping operations ensure that natur ........
