White Pine Copper Announces Positive Pre-Feasibility Study to Revive One of America's Legendary Copper Districts

TORONTO and WHITE PINE, Mich., Sept. 21, 2026 /PRNewswire/ -- White Pine Copper LLC ("WPC" or the "Company"), a Michigan-based copper development company wholly owned by Kinterra Copper USA LLC ("Kinterra"), is pleased to announce the results of a Pre-Feasibility Study ("PFS") for its White Pine North Project ("White Pine North" or the "Project") located in Michigan, USA. All dollar amounts are in U.S. dollars unless otherwise stated.