Copper-zinc mine - Saudi Arabia

Copper-zinc mine - Saudi Arabia

As part of a proposal to deepen an existing open pit gold mine from the oxide zone into the sulphide zone, we were commissioned to carry out a pre-feasibility and feasibility study for a brown field copper-zinc mine in Saudi Arabia - reviewing the central and management of water inflows as well as water supply.

We developed an initial hydrogeological conceptual site model based on historic data and then dovetailed the hydrogeological and geotechnical drilling to minimise site investigation. Encountering groundwater within the proposed footprint of the pit, we carried out in-situ testing and analysis to assess likely discharge rates. We recommended control measures and additional hydrogeological investigations. We also reviewed whether the mine has sufficient water resources to supply the proposed expansion.

Our geotechnical team produced a phased site investigation design that collects the most relevant information at the appropriate phase of the project - assessing both the volume and quality of water needed to process the ore, and potential water recycling measures that could maximise water efficiency.