Tintina Mines pegs Domeyko project NPV at $560M (U.S.)

Executive Summary

• Tintina Mines Ltd. released a Preliminary Economic Assessment (PEA) for its 74%-owned Domeyko Sulfuros copper-gold project in the Atacama region, Chile, prepared by SRK Consulting.
• The base case demonstrates strong economics with a pretax NPV of $560 million and a 26-year mine life, assuming copper at $4.30/lb and gold at $2,500/oz.
• The project features a 100% renewable energy strategy with battery storage and raw seawater processing, addressing environmental constraints in the Atacama Desert.

Key Details

• Financial Metrics (Base Case):
  • Pretax NPV (8%): $560 million USD.
  • After-tax NPV (8%): $328 million USD.
  • Initial Capital: $1,283 million USD (includes 35% contingency on plant and infrastructure).
  • Deferred/Sustaining Capital: $905 million USD.
• Production Profile (Life of Mine):
  • Duration: 26 years.
  • Total Recovered Copper: 2.1 billion pounds (945,000 tonnes).
  • Total Recovered Gold: 1.5 million ounces.
  • Mining Rate: 164,000 tonnes per day (tpd).
  • Processing Rate: 35,000 tpd.
  • Metallurgical Recoveries: ~88.2% for copper; ~64.6% for gold.
• Mineral Resources:
  • Effective Date: January 23, 2026.
  • Dos Amigos Resource: 357 million tonnes (Mt).
  • Drilling Basis: 21,800 metres of drilling.
  • Compliance: CIM Best Practice Guidelines.
• ESG and Infrastructure:
  • Power: 100% renewable energy strategy supported by Battery Energy Storage Systems (BESS).
  • Water: Raw seawater processing via a dedicated 63-kilometre pipeline (zero continental water consumption).
  • Location: Adjacent to Route 5, 53 km from Vallenar, 63 km from the coast, and 104 km from the Port of Las Losas (Huasco).
  • Grid: Existing 110-kV and 220 kV transmission lines available.
• Future Upside:
  • District-scale exploration targets include Tricolor and Maria Soledad.
  • Key value drivers include conversion of inferred resources, optimization of gold recovery, and advancement of exploration targets.
  • Project is advancing toward prefeasibility study.

Notable Quotes

• "The PEA provides a strong technical and economic foundation to advance Domeyko Sulfuros to the next stage of development, and we believe the project offers meaningful opportunities for further optimization and value enhancement as additional technical work is completed." — Juan Enrique Rassmuss, President and Chairman
• "Furthermore, the resource at Dos Amigos is merely the anchor for a broader district that includes the high-priority Tricolor and Maria Soledad targets, providing a clear path for resource growth and project rerating." — Juan Enrique Rassmuss, President and Chairman