Integra Underground mining operations are approved at a maximum extraction rate of 4.5 million tonnes per annum (Mtpa) of run-of-mine (ROM) coal until 31 December 2035 under Project Approval (PA) 08_0101. This approval allows longwall mining of the Hebden, Barrett and Middle Liddell seams to produce high quality, semi-hard coking coal for export.
During the 2022 Integra Underground completed the mining of Longwall 17 and commenced the mining of Longwall 18. Surface activities at Integra Underground during the reporting period included the construction of gas drainage wells, pipelines and access roads for Longwalls 18 and 19. Rehabilitation was undertaken at eight gas well locations including access tracks and pipelines.
Integra Underground will undertake the following mining activities during 2023:
•First workings development in the Middle Liddell Seam for Longwall 20 using continuous miners;
• Longwall mining within the Middle Liddell seam, in Longwall 18 and Longwall 19;
• Extraction of ROM coal;
• Subsidence monitoring and remediation as per the approved Extraction Plan;
• Storage of ROM coal at the pit top;
• Hauling and processing of coal from Integra Underground to be undertaken by Bloomfield Collieries and its Rix’s Creek North CHPP;
• Operation of workshop and administration areas; and
• Installation, commissioning, and operation of gas management infrastructure for Longwalls 18, 19 and 20, includin ........
