The WMP will involve the mining of the Nebo and Babel Ni-Cu-PGE sulphide deposits as individual open pits. Nebo sits on a paleochannel aquifer and requires dewatering ahead of mining. Dewatering is planned to involve ground bores and groundwater sumps. Bore dewatering is assumed to be free of sediment and will be supplied directly to the mine site’s raw water system.

Nebo dewatering system is intended to provide water for the WMP from construction phase through to commissioning and early years of operation. The dewatering system will consist of approximately 15 in-pit and ex-pit bores. Drilling, development and pump testing of these bores is ongoing. System design will be refined as more information becomes available.

Two (2) (and soon to be four (4)) of these bores are already equipped and supply the current construction water demands.

The scope details at the time of publishing this Expression of Interest (EOI) (pending detailed design), are provided below. Detailed design will be completed by others ahead of this construct-only scope.

Scope includes:

1. Supply, site installation and commissioning of bore field collector lines, trunk mains, fittings and tie-in works to the raw water storage dam. The storage dam itself will be constructed by others. Pipeline specification and quantity estimation in table below.

2. Supply, site establishment and equipping of 15 raw water supply bores, including supply, installation and commissioning of the following:

a. 11 submersible bore pump sets; preliminary indications are that pumps will be a mixture of Bore Type 1 – SP17-13 (7.5kW) and Bore Type 2 – SP77-7 (26kW). Current expected split is approximately six (6) Type 1 bores and five (5) Type 2 bores. Pump specifications are typical and will be firmed up in detailed design.

b. Two (2) sets of complete and interchangeable spare bore pumps for each pump type complete with discharge valve, riser, adaptor, motor shroud, full length tested submersible cabling and termination kits, i.e., a total of four (4) spare pumps.

c. Bore headworks, riser (flexible riser for in pit bores), security cable. Headworks shall include instrumentation for flow and pressure metering and all valving and interconnecting piping for safe operation and maintenance of the equipment.

d. Local power generation gensets and fuel storage for all bores including integrated solar power panels and batteries. The system is likely to consist of six (6) 60 kVA gensets for type 1 bores and five (5) 25 kVA gensets for type 2 bores.

e. Including 5000 L self-bunded diesel fuel storage tanks (constructed and approved to AS1940/AS1692 with minimum seven (7) days run time per diesel unit), and suitable zero spill high flow rate refueling equipment. All generators to mine specification suitable for site operation conditions with high temperature and dust. Solar power panel for trickle charge of generator batteries and lockable battery isolators shall be included.

f. Local control panel and radio telemetry and control. The control skids for in-pit bores are expected to be trailer mounted to allow movement as mining progresses. Scope includes control instrumentation, typically: a pressure transmitter, level sensor, transmitter and flow meter.

3. SCADA and telemetry systems supply and programming for safe and reliable operation of the system.

4. Supply, site installation and commissioning of water supply scheme equipment and associated supporting equipment and infrastructure, including provision of training in operation/maintenance requirements.

5. Supply of all off-site and on-site labour, materials, and equipment to complete the works including supervision, tools, plant / machinery, site survey, testing and reporting.

6. Provide shop drawings for all bespoke equipment.

Submission of EOI

The Principal invites capable and experienced contractors/suppliers to register their EOI, clearly identifying their capability to execute the scope herein. The Principal will use the EOI to improve our understanding of market capability and interest, via the ICN Gateway. Suitable registrants may subsequently be invited to submit a tender for this package.

Please email WMPCommercial@ozminerals.com should you have any questions