Grande Portage Reports Advancements of Transportation Infrastructure at the New Amalga Gold Project

VANCOUVER, BC / ACCESS Newswire / December 16, 2025 / Grande Portage Resources Ltd. (TSXV:GPG)(OTCQB:GPTRF)(FSE:GPB) ("Grande Portage" or the "Company") is pleased to announce an update regarding transportation infrastructure for its New Amalga Gold property in Southeast Alaska. The current development concept for the project envisions a small-footprint underground mining operation with third-party offsite processing, eliminating the need for an onsite mill or tailings storage facility.

Update on Project Access Road:

In August 2025 the Company announced its application for a State of Alaska road easement which would encompass approximately the initial one-third of the total road development required to establish access to the project site. The remaining two-thirds of the route is located on Federal land requiring a separate regulatory process.

The State easement application has now progressed to the adjudication stage at the Department of Natural Resources, a significant milestone which will, in due course, lead to a public notice period. The company has also signed a contract for an archeological and cultural resources survey to take place in early spring - the primary baseline study which will be required before road construction can begin.

The easement for this initial road segment will enable the start of mine access road construction on State Land while advancing the Federal regulatory process for the portions of the project under Federal land tenure. Importantly, it will also provide the near-term benefit of establishing a helicopter staging area much closer to the project site compared to the staging area used in previous field seasons, which was located at the Juneau International Airport. This will greatly reduce the helicopter cycle distance for shuttling drilling equipment and supplies, improving efficiency and also reducing noise impacts to residential areas of Juneau.

Update on Ore Barge Dock at Cascade Point:

The Company is also pleased to provide an update on developments related to the proposed ore barge dock at Cascade Point, following the Company's June 2024 announcement of a Letter of Intent ("LOI") with Goldbelt, Inc. ("Goldbelt"), Juneau's Alaska Native Corporation.

Cascade Point is located approximately 15 miles (24 km) from the New Amalga Mine project and is accessible via Glacier Highway, an existing state-maintained roadway. The design for the ore dock will be integrated with Goldbelt's planning for a future Alaska Marine Highway System ferry terminal at the site, intended to improve marine access and transportation infrastructure in the Juneau area. The location can accommodate both functions in separate areas, with flexibility for the two projects to be built either concurrently or sequentially.