Pyhäsalmi
Extraction and research at one of Europe’s oldest and deepest underground mines.
Key metrics
Operational
Exemplar of efficiency
4km south-east of the town of Pyhäjärvi, on Lake Pyhäjärvi in central Finland, you’ll find our copper, zinc and pyrite mine – Pyhäsalmi.
Acquired by First Quantum in 2013 through its acquisition of Inmet, but first developed in 1962, it is one of the most efficient non-caving underground mines in the world. Today, the 1,450-metre-deep underground mine is in closure phase and only pyrite concentrate is produced from tailings. Copper and zinc resources were depleted in 2022, though pyrite supply will last until 2025, after which the mine will be closed in accordance with best practice.
It will be repurposed by Callio, a project development environment operated by Pyhäjärvi town. Proposed new uses include physics labs, a secure data center, pumped hydroelectrical energy storage, gravity energy storage, and experimental production of insects and plants. Additonally, a 13 MWp solarpark constructed on the closed tailings pond will start operation in 2025.
“The valuable support Pyhäsalmi mine has given to research and education in the field during its operation continues even after its closure: this remarkable underground infrastructure can provide a lasting legacy for science.”
Saija Luukkanen,
Professor of minerals processing, Head of the Unit, Oulu Mining School, University of Oulu
“Well-trained and experienced Pyhäsalmi ex-employees are appreciated and continuing their careers not only in the Mining Industry. It’s a testament to Pyhäsalmi’s dedication to its employees’ growth and well-being.”
Kimmo Luukkonen,
General Manager
Farming for Martian bars
Modern mining
Societal base materials
The copper extracted from Pyhäsalmi is vital to a number of industries. It is used to power homes, build electric vehicles and renewable energy infrastructure and is a key resource in the transition to green energy.
Reserves, resources and production statistics
Find out the most recent Mineral Resource and Reserve estimate. These estimates involve risks and uncertainties, please read our Cautionary Disclosure.
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