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Gruvaktiebolaget Viscaria, formerly known as Copperstone Resources AB, is a Swedish mining company focused on the exploration and development of copper resources. The company is in the process of reopening the Viscaria copper mine located in Kiruna, Sweden, aiming to become a significant supplier of responsibly produced copper. In addition to the Viscaria project, the company holds processing concessions and exploration permits in Arvidsjaur and Smedjebacken, Sweden. The company changed its name to Gruvaktiebolaget Viscaria in May 2024 to reflect its strategic focus on the Viscaria mine. Headquartered in Kiruna, Sweden, the company leverages the high copper grade and favorable geographical location of its assets to position itself as a key contributor to Sweden's and Europe's climate transition.

Linde is the largest industrial gas supplier in the world, with operations in over 100 countries. The firm's main products are atmospheric gases (including oxygen, nitrogen, and argon) and process gases (including hydrogen, carbon dioxide, and helium), as well as equipment used in industrial gas production. Linde serves a wide variety of end markets, including chemicals, manufacturing, healthcare, and steelmaking. Linde generated approximately $34 billion in revenue in 2025.