Twin Metals Minnesota (TMM) is a Minnesota mining company committed to developing and operating a safe, 21st century underground copper, nickel, platinum group metals and cobalt mining project in the Iron Range of northeast Minnesota. Safe for workers and environmentally friendly. TMM will demonstrate it will meet and when possible exceed environmental standards through a rigorous government-led regulatory review process.
TMM offers an extraordinary opportunity for long-term, environmentally sound economic growth and significant family-supporting job creation in northeastern Minnesota. The TMM project will also support the growing demand for responsibly sourced copper, nickel, platinum group metals and cobalt in a worldwide green economy.