The 100% free dig open-pit mining operation uses conventional truck and shovel with a short haul to an in-pit crushing and conveying (IPCC) system.
In a ‘strip-mining style’ the pit will be mined to full depth of economic mineralisation and then advanced northwest along strike, allowing for the continual backfill of waste in the void.
The truck and shovel operation will consist of:
- Initially two 550 t CAT6050BH backhoes operating in Ore and overburden, followed by the addition of two CAT6060FS AC electric face shovels operating in overburden commencing in Year 5 and 7 when the third and fourth shovels are required to meet production.
- Initially 12, 193t payload haul trucks, peaking at 30
- Customised 31 m3 shovel buckets and light weight truck trays specific to the site material characteristics, (principally low abrasivity)
- A development fleet of articulated trucks used for construction works to support the mine operations. These activities include, tailings dam construction; surface water diversion, building of the Ore conveyor access corridor; site works to support the IPCC, road construction and maintenance and topsoil stripping and stockpiling and subsequent placement for rehabilitation.
The Ore IPCC system will be relocated along strike approximately every 12 months. This keeps the haulage distance between the advancing dig face and the crusher short, and allows for cheap transportation of the material back to the beneficiation plant site.
Video: SRK Consulting Ltd based in Cardiff constructed a full 25 year production schedule for the DFS. The detailed schedule includes the movements of all Ore blocks containing approximately 460Mt of Ore, along with the positioning of haul roads, crushing stations and conveyors.