The Kerr-Sulphurets-Mitchell (KSM) project, owned by Seabridge Gold Inc., is a large-scale gold-copper-silver mine proposed for northwest British Columbia. Targeting a massive low-grade sulfide ore deposit, the mine is situated within the headwaters of the Bell-Irving tributary of the Nass River and the Unuk River, which ultimately flows into the Misty Fjords National Monument in Southeast Alaska. Seabridge Gold has described KSM as one of the world’s largest undeveloped gold