The operation envisages open pit mining, utilising drill & blast with a truck and shovel approach to ore and waste haulage.
Mining – Bissa
Mining operations at Bissa are focused on a number of different open pits.
Bissa gold mine operates a typical modern open pit operation with drilling and blasting followed by load and haul allowing for selective mining of the ore. The material lithologies are divided into four main categories: Laterite, Saprolite, Transition, and Fresh.
Fleet capacity is sufficient, with only rebuilding and some replacement capital necessary during the LoM. There are currently 39 trucks with a payload of 100 t that are
used for production from the open pits. Assumed cycle times average 24 minutes.
The mine has several significant opportunities to extend the LoM but this will depend on the exploration program and the gold price.
The ramps have been designed at a gradient of 10% at 23 m width. The mining benches are between 8 m and 16 m high and are loaded out in 4 m fletches.
Mining – Bouly
The Bouly operation extracts material from multiple open pits. The ore is hauled to the heap leach pads, while the waste is hauled to the waste dumps.
Production is undertaken through conventional drilling, blasting, loading and hauling processes. There are currently 16 CAT 777 90 t haul trucks at Bouly which are shared with the Bissa operation. There are two PC2000s an ........