The Mt Rawdon gold deposit is a massive intrusive-related low grade gold deposit that exhibits excellent characteristics conducive to low cost mining and treatment. Alluvial gold was first discovered on the hill flanks in 1946 leading to early mining endeavours however the gold grade was too low to be profitable in those times. The gold mineralisation is closely associated with fine disseminated pyrite and base metal sulphides as well as in irregular discrete veinlets within the igneous host rocks. The gold grade is statistically independent of the sulphide percentage of the host however. The host rocks are predominantly rhyodacitic intrusives, breccias and a related volcaniclastic pile, with the orebody dipping moderately to the south west.

Mining production is derived from a single open pit, utilising conventional drill and blast, load and haul methodologies, mining 10-15m benches. The operation is scheduled to continue until FY23 at current estimates with a remaining life of mine strip ratio of 1.8:1.

Ore treatment/processing method/s:Conventional crush-grind-CIL to produce gold dore.

Grinding Media:High Manganese steel. 125 mm ball (steel lined SAG mill) 64mm balls (rubber lined Ball mill) Grind size 60%-106 um.

Recycle crusher:Autofine 736 Cone Crusher (Allis Chalmers).

Mineral liberation plant/equipment:1 x 1,500 m leaching tank, 5 x 1,500 m adsorption tanks.

Refining plant/equipment:8t AARL elution column.