Hiding a thousand feet below the earth’s surface in this patch of northern Minnesota wetlands are ancient mineral deposits that some view as critical to fueling America’s clean energy future.A company called Talon Metals is drilling here around the clock, extracting samples of rock rich with nickel in a bid to become the country’s sole source of a material used to power zero-emission vehicles.But some locals are fighting the mine, for fear it could pollute their environment. The pushback hints at how difficult it may be to build an all-American supply chain that powers the country’s transition to electric vehicles.TAMARACK, Minn. — In this isolated town of about 100 people, dozens of employees are at work for Talon Metals, drawing long cylinders of rock from deep in the earth and analyzing their contents. They liken their work to a game of Battleship — each hole drilled allows them to better map out where a massive and long-hidden mineral deposit is lurking below.The company is proposing to build an underground mine near Tamarack that would produce nickel, a h …
