Mine Earthworks
The Kali Kuning area will require large volumes of bulk earthworks during the construction phase predominantly to prepare the leach pad, SX-EW plant and stormwater pond areas in the Kali Kuning Valley (KKV or KK Valley).
The size of the fleet is designed to achieve the bulk earthworks tasks in line with the construction and production schedules. At peak activity periods the fleet would comprise 7 x 45t hydraulic excavators and 16 x 25t articulated dump trucks. Equipment will be supplied by a mining contractor.
Specialist earthworks designs for facilities such as the leach pads and process areas were designed by SRK and Golder Associates.
Mine Waste Rock Management
Mining will commence at Kali Kuning (KK) and all waste rock produced, either from the pit or from construction earthworks, will be used as construction fill material.
The initial waste rock dump area is at the head of the KK Valley. Non acid forming (NAF) waste in the KK Valley dumped will be reclaimed to cap the KK Valley leach at the end of the project.
During the first two years, all of the potentially acid forming (PAF) waste rock will be used as fill in the base of the KK Valley pads. The remainder will be stored in a permanent waste rock dump on the coastal area north of the KK Pit.
