Orogenic greenstone gold deposits hosted in a number of different styles of lodes. Darlot deposits primarily occur at the intersections between structures and stratigraphy, however, there are subtle differences in alteration and mineralisation that control the local disposition of metal occurrence in thickness, continuity and mineralising texture.

Gold mineralisation is associated with quartz veins and alteration halos controlled by major structures or secondary splays and cross linking structures. The Darlot deposit has been differentiated into two separate entities, namely the Darlot lodes and Centenary ore body. The Centenary ore body is located some 1.2km east of the Darlot open pit and down dip from the Darlot lode extensions.

In the Darlot lodes, gold mineralisation occurs within and around quartz laminar and sheeted quartz veins in local dilation zones along the Darlot thrust, in addition to sub-horizontal extensional quartz veins in felsic volcanic and intrusive rocks above the thrust.

The Centenary ore body has been defined from approximately 150 metres to 700 metres below surface. Gold mineralisation occurs within sub horizontal to 20° westerly dipping stacked quartz veins bounded to the west by the Oval fault and to the east by the Lords fault.

The 2016 mine plan is focused on the underground Centenary ore systems and LSL, as well as setting up access and take off points for the CDA Oval area, should current exploration prove successful.

Mining is conducted via a combination of long hole open stoping, room and pillar and narrow vein long-hole stoping. Ore bodies are accessed via two declines from the base of the Darlot open pit. Paste fill is utilised to backfill open stopes allowing maximum extraction of the lode system.

Processing Treatment Facilities:

- Plant constructed in 1988 (relocated from Mt Fisher) for first production in 1989
- Crusher circuit upgraded in 2000 and secondary mill installed in 1997
- 0.8Mpta 1600kW two stage ball milling circuit and Knelson concentrator gravity circuit
- Cyanide leach CIL train incorporating 11 tanks with residence time of 22 hours
- 4.0 tonne carbon pressure Zadra elution circuit, horizontal carbon regeneration kiln, bullion production gold room
-Overall recovery ~ 93%
- Four cell, 45 hectare dual cell tailings facility
- Next lift to commence on tailings facility
- Additional cell approved for construction as required Additional cell approved for construction as required.