FAQ

  • What is Twin Metals Minnesota?

    Twin Metals Minnesota is a Minnesota mining company focused on designing, constructing and operating an underground copper, nickel, platinum, palladium, gold and silver mining project in the Iron Range region of northeast Minnesota. Twin Metals Minnesota is a wholly-owned subsidiary of Antofagasta plc, one of the top 10 copper producers in the world.

  • Where is the proposed TMM Project?

    Located nine miles southeast of Ely, Minnesota, and 11 miles northeast of Babbitt, Minnesota, the TMM Project targets the valuable minerals within the Maturi deposit, part of the Duluth Complex geologic formation.

  • Why mine strategic metals in Minnesota?

    Minnesota is home to the Duluth Complex in northeast Minnesota, one of the largest untapped copper, nickel, and platinum group metals (PGM) resources in the world. Current estimates are that the Duluth Complex contains more than 4 billion tons of copper, nickel and PGM resources. Domestic and international demand for copper, nickel and PGMs is projected to grow steadily over the long term, positioning Minnesota to be a world leader in supplying these critical strategic metals.

  • How will the TMM Project’s strategic metals help the economy?

    Copper, nickel and platinum group metals are critical aspects of a sustainable future including construction, communications, power distribution, national defense, medicine and renewable green energy. The TMM Project will contribute to establishing Minnesota as a world leader in the production of green energy minerals used in wind turbines, hybrid and electric vehicles, batteries and solar energy panels.

  • How many jobs will the TMM Project create?

    The TMM Project represents an extraordinary opportunity for economic growth and job creation regionally and statewide. Once operational, TMM expects to directly employ 650 people long-term in northeastern Minnesota and to create an estimated 1,300 spinoff jobs in other industries.

  • At What Stage of Development is the TMM Project?

    TMM is working on advancing the design of the underground mine project, pursuing compact and efficient designs. TMM expects to submit a formal mine plan of operations (MPO) in the next two years pending a resolution of its federal mineral rights.

  • Will the construction and mining jobs be union jobs?

    The status of unionization of the TMM Project labor force will be determined by the work force itself later in the project development effort. TMM respects the strong union history in northern Minnesota. We are grateful for the public support many unions have expressed for our project and our industry.

  • WILL THE TMM PROJECT BE SUBJECT TO ENVIRONMENTAL REGULATION?

    Yes. Today’s environmental regulations tightly control how mines are designed and operated, and require bankruptcy-proof financial assurance for reclamation and closure performance. The Minnesota Department of Natural Resources, Minnesota Pollution Control Agency, U.S. Environmental Protection Agency and other state and federal agencies will enforce regulations protecting water, soil, animals and air. Twin Metals Minnesota also recognizes environmental conservation as a core value and is committed to protecting Minnesota’s wilderness, natural environment and recreational resources. For more information, visit the Responsible Mining page.

  • HOW WILL THE MINE MINIMIZE THE IMPACT OF ITS ACTIVITY?

    The TMM Project will minimize the impact of mining activity by using underground mining operations coupled with storing half of the tailings as permanent cemented backfill in the underground mine. The remaining tailings will be stored in a modern surface storage facility outside the Rainy River drainage near an existing mining area. Tailings will be non-acid generating, and no permanent waste rock piles will be required.

  • ARE THERE SIMILAR PROJECTS TO THE TMM PROJECT THAT I CAN LEARN ABOUT?

    One example is the Eagle Mine, located in western Marquette County, Michigan, an underground copper-nickel mine and currently the only mine producing nickel in the U.S. The mine began production in September 2014 after becoming the first mine to become permitted to mine nonferrous minerals in the state in 2007. In Minnesota, PolyMet Mining has submitted permit applications to the state for its NorthMet Project located near Hoyt Lakes.

  • HOW LONG-TERM ARE THE MINING JOBS?

    TMM is currently working to determine the duration of the mine plan it will formally propose for permitting. While the eventual mine plan duration may be limited to several decades, the Duluth Complex contains mineralization that, through future exploration, permitting and operations, can support jobs for generations.

  • WHO CAN I CONTACT TO LEARN MORE ABOUT THE PROJECT?