Tiernan Strengthens Management Team, Hires Mario Marchese as Country Manager, Chile

Executive Summary

• Tiernan Gold Corp. has appointed Mario Marchese as Country Manager, Chile, effective June 1, 2026.
• Mr. Marchese will lead the establishment of the Company's Chilean organization and oversee regulatory, stakeholder, and environmental permitting processes for the Volcan Gold Project.

Key Details

• Role & Responsibilities: Leading local stakeholder and regulatory relationships; coordinating environmental and regulatory permitting; supporting engineering and technical workstreams for the Volcan Gold Project in Chile's Maricunga Gold Belt.
• Organizational Context: The appointment follows the recent addition of James Connolly as Executive Vice President, Projects, as part of a planned leadership team build-out.
• Professional Background (Mario Marchese):
  • Over 30 years of experience in mining, energy, engineering, and project development.
  • Former Project Director of the HNH Green Ammonia project in southern Chile.
  • Previous experience with Codelco (Chuquicamata Division), Fluor, Hatch, Bechtel, Ausenco, and Codelco Tech.

Notable Quotes

"Mario brings the Chilean project leadership Volcan needs at this stage: practical project-development experience, clear judgment on permitting and stakeholder engagement, and the ability to build the local platform around the work now underway," said Fausto Di Trapani, President and CEO.