Trilogy Metals said the U.S. Army Corps of Engineers has published a Notice of Intent to prepare an Environmental Impact Statement for the Arctic Project in northwestern Alaska's Ambler Mining District. The action formally begins the project's review under the National Environmental Policy Act and opens public scoping, allowing residents, Tribes, regional organizations and other stakeholders to comment on issues and alternatives for analysis. The project is being advanced by Ambler Metals, Trilogy's 50/50 joint venture with South32 Limited. The coordinated federal and state schedule targets a draft Environmental Impact Statement in October 2027, a Record of Decision in September 2028 and overall permitting completion in November 2028.