Canadian company Centerra Gold has signed an agreement to acquire US-based Thompson Creek Metals in a deal worth $1.1bn.

Thompson Creek operates the Mount Milligan mine in British Columbia, Canada.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

Together with Centerra’s Kumtor mine in the Kyrgyz Republic, the combined company is expected to be established as a low-cost gold producer.

In connection with the deal, Centerra also signed a letter with Royal Gold. This comprised Royal Gold’s 52.25% gold streaming interest at Mount Milligan being amended to a 35% gold stream and 18.75% copper stream upon completion of the deal.

Under the amended agreement, Mount Milligan’s revenue split to Centerra is expected to be roughly 70% gold and 30% copper.

"This will complement our Canadian-based Greenstone project and provide for further flexibility to expand into the Americas."

Centerra Gold CEO Scott Perry said: "The acquisition will establish an operating base in Canada, one of the lowest risk mining jurisdictions in the world, which will complement our Canadian-based Greenstone project and provide for further flexibility to expand into the Americas.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

"Furthermore, the amendment to the Royal Gold stream repositions the asset by maximising gold exposure for our shareholders."

The transaction will add Mount Milligan asset to Centerra’s portfolio and increase its production, reserves and resources.

Amendment of Royal Gold’s gold stream from 52.25% to 35% is set to reposition Mount Milligan as a mine with low pro forma 2016 AISC of $775oz-$850oz.

The addition of secondary crushing at the Mount Milligan Mine is expected to take place by the year-end and will increase production to more than 62,500tpd.

Thompson Creek president and CEO Jacques Perron said: "Following a formal strategic review process and the evaluation of numerous strategic alternatives to address Thompson Creek’s upcoming debt maturities, I am pleased to announce the business combination of Thompson Creek with Centerra.

"We believe the combination with Centerra represents a unique opportunity for our shareholders to gain exposure to additional high-quality assets with a strong development pipeline."

Mining Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Mining Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact

Excellence in Action
Dual-award winner in the 2025 Mining Technology Excellence Awards, Propeller is redefining geospatial intelligence and safety in mining. Explore how its AeroPoints and DirtMate solutions deliver survey-grade mapping, live haul metrics, and safer, more efficient operations across mines and quarries worldwide.

Discover the Impact