Grande Portage files 2026 plan with U.S. Forest Service

Executive Summary

• Grande Portage Resources Ltd. has filed its 2026 Plan of Operations (drill permit) with the U.S. Forest Service for the New Amalga gold property in southeast Alaska.
• The proposed 2026 program includes up to 4,300 metres of diamond drilling across up to 14 holes, alongside geotechnical and hydrogeological characterization work to support environmental reviews and mine development planning.
• The project currently hosts an indicated resource of 1,438,500 ounces of gold at 9.47 g/t Au and an inferred resource of 515,700 ounces of gold at 8.85 g/t Au, with a development concept focused on small-footprint underground mining with offsite processing.

Key Details

• Regulatory Filing: Filed 2026 Plan of Operations (drill permit) with the U.S. Forest Service.
• Drilling Program: Up to 4,300 metres of diamond drilling from up to 14 drill holes.
• Geotechnical/Hydrogeological Work:
  • Detailed geotechnical logging to define rock conditions for underground infrastructure.
  • Installation of piezometers in select drill holes to measure groundwater levels and pressures.
  • Packer testing to determine hydraulic conductivity/permeability of rock structures.
• Purpose of Work: To upgrade resource classification, characterize geotechnical/hydrogeological aspects for environmental review/permitting, and inform mine development plans.
• Current Resource Estimate (Effective July 17, 2024):
  • Indicated Gold: 1,438,500 oz at 9.47 g/t Au (4,726,000 tonnes).
  • Inferred Gold: 515,700 oz at 8.85 g/t Au (1,813,000 tonnes).
  • Indicated Silver: 891,600 oz at 5.86 g/t Ag (4,726,000 tonnes).
  • Inferred Silver: 390,600 oz at 7.33 g/t Ag (1,813,000 tonnes).
  • Cut-off Grade: 2.5 g/t Au.
• Development Concept: Small-footprint underground mining operation with third-party offsite processing (no on-site mill or tailings storage facility).
• Regulatory Context: CEO Ian Klassen noted that U.S. Forest Service officials were brought back from furlough during the recent federal government shutdown to continue advancing permits, signaling high priority for the project.

Notable Quotes

• "The filing of the 2026 plan of operations marks an important milestone for the New Amalga project as it advances to a mix of exploration and development. For the first time, drilling will be gathering the critical geotechnical and hydrogeological data necessary to inform engineering and environmental studies. This is a key step to enable the project to advance through the regulatory process and towards mine development." — Ian Klassen, President and CEO
• "We would like to thank our local regulatory officials at the U.S. Forest Service, several of whom were brought back from furlough during the recent U.S. federal government shutdown in order to continue advancing the permits for New Amalga and other mining projects in the region. This is a strong and welcome signal that the U.S. federal government and the U.S. Forest Service consider permitting efforts for New Amalga to be a top priority due to the economic benefits the project will bring to the region." — Ian Klassen, President and CEO