Nord Precious to reprocess tailings at Castle mine

Executive Summary

• Nord Precious Metals has engaged T Engineering Inc. to provide multidisciplinary engineering support for the advancement of silver recovery from tailings within the Gowganda-Castle district.
• The engagement follows the company's March 31, 2026, acquisition of four mining leases in the Gowganda silver camp, consolidating key historical production areas.
• The project aims to utilize Ontario's fast-track regulatory pathway for tailings reprocessing to convert legacy environmental liabilities into near-term production.

Key Details

• Engineering Scope of Services:
  • Multidisciplinary support covering process, mechanical, civil, structural, electrical, and automation disciplines.
  • Project management, procurement, and financial analysis.
  • Engagement of third-party consultants for tailings storage infrastructure design and geotechnical services.
  • Pilot-scale testing and process validation at T Engineering's laboratory in Sudbury, Ontario (including particle size distribution, rheology, thickening, and filtration testing).
• Historical Tailings Resource: The recently acquired Gowganda mining leases contain an estimated 1.94 million tonnes grading 47.5 grams per tonne silver, totaling approximately 2.96 million ounces of silver.
• District Consolidation:
  • Total consolidated lease area now encompasses 789.7 hectares.
  • Includes three of the five largest past-producing mines in the Gowganda camp.
  • Includes the Miller Lake-O'Brien complex, which historically produced approximately 42 million ounces of silver.
• Critical Mineral Potential: The district offers significant byproduct potential for cobalt, copper, and nickel alongside silver.
• Infrastructure & Logistics:
  • Access to integrated processing infrastructure, including historic mine workings and all-season roads.
  • Strategic use of TTL Laboratories, the only permitted high-grade milling facility in the Cobalt camp.

Notable Quotes

"The addition of the adjoining mining leases to the Castle mine holdings is transformative for the company, adding key tailings deposits and underground infrastructure to our existing high-grade silver position. The Gowganda camp produced over 60 million ounces of silver before low prices shut it down. At today's prices, the district's remaining resources represent a fundamentally different economic proposition, and retaining T Engineering positions us to move forward on it." — Frank J. Basa, PEng, President and CEO