Name of the Project
Mungari mill expansion.

Location
About 600 km east of Perth and 20 km west of Kalgoorlie, in Western Australia.

Project Owner/s
Australian gold mining company Evolution Mining.
 
Project Description
The Mungari plant currently has a two-million-tonne-a-year processing capacity, with gold production estimated at 127 500 oz. 

The expansion project aims to extend the plant’s life by about 15 years at an average production of 155 000 oz/y.

Processing capacity will be expanded from two-million tonnes a year to 4.2-million tonnes a year, increasing gold production from 135 000 oz/y to 200 000 oz/y from 2027 to 2032.

Potential Job Creation
Not stated.

Net Present Value/Internal Rate of Return
The project has an incremental net present value (NPV) of $260-million at $2 400/oz, and an NPV of $600-million at spot price. The internal rate of return (IRR) is estimated at 19% at $2 400/oz, with an IRR of 28% at spot price. The project has a short payback period of three years at $2 400/oz and one-and-a-half years at spot price.

Capital Expenditure
Final capital expenditure of $212-million was recorded at the commissioning of the mill in the six months to December 31, 2025, representing a 15% saving to the original budget of $250-million.

Planned Start/End Date
The commissioning of the expanded mill was completed in the half-year to December 31, 2025.

Latest Developments
The plant operated at an annualised processing rate of 4.1-million tonnes a year in the quarter ended December 31, 2025, supporting the planned higher production rate going forward. 

Key Contracts, Suppliers and Consultants
None stated.

Contact Details for Project Information
Evolution Mining, tel +61 2 9696 2900.