The Millennium Minerals Nullagine Gold Project is located in the Pilbara region of northwestern Australia. Klohn Crippen Berger (KCB) have been commissioned to undertake a range of hydrogeological investigations at the site from feasibility to providing on-going services during mine production. Millennium engaged KCB to assist with the assessment and permitting requirements for mine dewatering needs for the Golden Eagle Deposit. Additionally, Millennium propose to use the extracted water for mine operation purposes (e.g. dust suppression, process water supply etc).
KCB has provided the following services:
- Baseline characterisation including drilling monitoring bores, installing nested piezometers and hydrochemical sampling
- Evaluation of mine dewatering requirements and mine water inflows, including building and calibrating a numerical groundwater model (Visual MODFLOW)
- Desk-top hydrogeological assessment of the satellite deposits, identifying future investigation / modelling requirements
- Provided supporting information to the client for regulatory approvals for groundwater extraction
- Development of a project Water Management Plan to assess the current supply-demand balance, reviewing bore yields, ore processing and recycling changes over time to determine if and when additional water supplies may be needed. A spreadsheet tool was provided to the client for future in-house assessment of the supply-demand balance
- Supervision of drilling and installation of additional water supply bores. This included identifying suitable drill sites using geophysics, as well as initial assessment of bore yields