Trilogy Metals Publishes Coordinated Permitting Schedule for Arctic Project, Targeting 2028 Decision

Trilogy Metals Inc. (NYSE American: TMQ) (TSX: TMQ) has announced that a coordinated federal and state permitting schedule for its flagship Arctic Project in Alaska has been published on the Federal Permitting Improvement Steering Council's Permitting Dashboard. The schedule, which designates the U.S. Army Corps of Engineers as the lead federal agency for environmental review, targets a Record of Decision (ROD) in September 2028 for the copper-zinc-lead-gold-silver project being advanced by Ambler Metals, a 50/50 joint venture between Trilogy Metals and South32.

The published timeline integrates federal and Alaska state permitting under the state's FAST-41 memorandum of understanding, providing a single, publicly tracked roadmap for project approvals. According to the company, the schedule targets an approximately 29-month review period from its April 2026 Clean Water Act Section 404 permit application to the ROD, reflecting a more streamlined process than historical permitting timelines. This efficiency gain is significant for the Arctic Project, located within the Ambler Mining District, which is recognized as one of the richest and most prospective copper-dominant districts in the world, hosting polymetallic volcanogenic massive sulfide (VMS) deposits containing copper, zinc, lead, gold, and silver, as well as carbonate replacement deposits with high-grade copper and cobalt mineralization.

The Ambler Metals joint venture holds a 100 percent interest in the Upper Kobuk Mineral Projects (UKMP) in northwestern Alaska, encompassing approximately 190,929 hectares. Exploration has focused on two deposits: the Arctic VMS deposit and the Bornite carbonate replacement deposit. Trilogy Metals' vision is to develop the Ambler Mining District into a premier North American copper producer while protecting and respecting subsistence livelihoods. The company has an agreement with NANA Regional Corporation, an Alaska Native Corporation, providing a framework for exploration and potential development in cooperation with local communities.

The publication of this permitting schedule marks a critical step forward for the project, offering greater certainty to investors and stakeholders. By leveraging FAST-41, the project benefits from coordinated federal and state review, potentially reducing the time and cost associated with permitting. The targeted 2028 ROD timeline, if met, would position the Arctic Project for development in the early 2030s, contributing to domestic supply of base metals critical for the energy transition and infrastructure development.

For more details on the permitting schedule, visit the full press release at https://nnw.fm/LSXX9. Additional updates on Trilogy Metals are available in the company's newsroom at https://nnw.fm/TMQ.