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Project announcement

CIMIC

11 June 2026

Thiess Group secures three contracts across gold and critical minerals projects

The Thiess Group has secured three contracts across gold and critical minerals projects in Australia, with new awards at the Sunday Creek Gold-Antimony Project and Fosterville Gold Mine in Victoria, and an extension at Rosebery Polymetallic Base Metal Mine, Tasmania.

Underground General Manager James Glover said the team was proud to collaborate with industry leading mining companies to deliver high-quality, value-driven execution for key Australian operations in precious and critical minerals.

“These projects reflect our strength in technically complex underground environments and our ability to mobilise quickly and deliver safely,” he said.

Thiess Group Executive and Chair Michael Wright said the contracts reflected Thiess’ growing role in enabling Australia’s underground and critical minerals sector, and its expanding portfolio across a diverse and high-value commodity mix.

“These awards reinforce our position as a partner of choice for complex, high value underground projects that are critical to Australia’s economic and energy future,” he said.

“From supporting Victoria’s critical minerals pipeline at Sunday Creek, to enabling the next phase of expansion and sustainability at Fosterville, and continuing our partnership at Rosebery, each project demonstrates our ability to deliver safely, reliably and at scale across a range of specialist underground mining services.”

Sunday Creek Gold-Antimony Project, Victoria

Southern Cross Gold Consolidated Ltd (TSX: SXGC, ASX: SX2) has selected the Thiess Group to deliver the underground decline (tunnel) at its Sunday Creek Gold-Antimony Project in Victoria.

The contract scope includes portal establishment, primary decline and support services, as well as lateral development.

Fosterville Gold Mine, Victoria

Separately, Agnico Eagle has engaged Thiess to deliver raise boring and shaft lining services for its Fosterville Gold Mine, near Bendigo, Victoria.

The scope includes excavation and lining of a 374 metre deep, raise bore shaft, which forms a key component of the Fosterville Gold Mine’s major ventilation upgrade.

Rosebery Polymetallic Base Metal Mine, Tasmania

Thiess has also signed a two year extension of its shotcrete and cement rockfill contract at MMG’s polymetallic base metal mine in Rosebery, Tasmania.

The original contract of three years has achieved positive safe production outcomes for the client, without a single recordable injury during this time.

Last year, Thiess signed a separate three year contract to provide underground rehabilitation and development at Rosebery, a mine that has been operating continuously for more than 90 years.

The contracts will be delivered by Thiess’ underground metals mining specialist PYBAR.

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