ASX-listed gold producer and explorer Regis Resources has unveiled its plans to develop the Garden Well Main and Rosemont Stage 3 underground mines in Western Australia.

This initiative is set to increase the firm’s underground ore reserves and contribute to a steady state annualised gold production target of between 100koz to 120koz from FY27.

Garden Well Main, situated nearly 750m north of the existing Garden Well South underground mine, has a mining inventory that includes 36% indicated mineral resources, 24% inferred mineral resources, and 41% exploration target.

This amounts to 3.2Mt at 2.8g/t Au for 295koz of contained gold, using a 2.2g/t cut-off grade.

The new Garden Well Main underground mine will tap into a mining domain located beneath the current Garden Well open pit, with mineralisation identified from 250m to 500m below ground level.

The estimated pre-production capital ranges from A$75m ($49.7m) to A$95m ($62.9m), with development starting immediately and the first ore expected in Q1 FY26.

How well do you really know your competitors?

Access the most comprehensive Company Profiles on the market, powered by GlobalData. Save hours of research. Gain competitive edge.

Company Profile – free sample

Thank you!

Your download email will arrive shortly

Not ready to buy yet? Download a free sample

We are confident about the unique quality of our Company Profiles. However, we want you to make the most beneficial decision for your business, so we offer a free sample that you can download by submitting the below form

By GlobalData
Visit our Privacy Policy for more information about our services, how we may use, process and share your personal data, including information of your rights in respect of your personal data and how you can unsubscribe from future marketing communications. Our services are intended for corporate subscribers and you warrant that the email address submitted is your corporate email address.

It is expected to produce 60koz to 70koz of gold annually, with a life of mine (LOM) All-In Sustaining Cost (AISC) estimated at $2,050-2,150 per oz.

Regis has been operating underground at Rosemont since 2019, encompassing the Rosemont Main, Central, and South areas.

The Rosemont Stage 3 expansion, located 100m south of the current operations, will deepen the Rosemont South area by 300m to a total depth of 700m below ground level.

This extension is expected to support reserve growth and life extensions, with a mining inventory of 1.7Mt at 2.8 g/t Au for 157koz contained gold, including a probable ore reserve of 490kt at 2.6g/t Au for 41koz.

The remainder consists of inferred mineral resources and exploration targets. With pre-production capital estimated at $45m to $55m, development is underway, and the first ore is also scheduled for Q1 FY26.

The mine aims to reach an annualised gold production target of 40koz to 50koz, with a project LOM AISC estimated at $2,400-2,500 per oz.