​Longwall mining commenced at RUM in 2007. Access to the underground operation is via a drift located to the east of the Ravensworth Coal Handling Preparation Plant (RCHPP).

Mining at RUM is completed using longwall mining methods. Prior to panels of coal being extracted by longwall methods, development headings are mined to provide access to the panels. Headings are formed with continuous miners along each side of the longwall panels. Coal is transported from the underground via the mine conveyor belt system. At the south westerly extremity of the longwall, the headings are connected to form a longwall installation face, which allows for the installation of the longwall mining equipment.

The main components of the longwall mining system at RUM consist of a shearer, armoured face conveyor and hydraulic roof supports. The shearer removes the coal from the coal face, which is approximately 250 metres wide. The average height of the Pikes Gully seam is 2.3 metres.

Mining operations occur 24 hours per day, five days per week.