Tocvan begins fieldwork, magnetics survey at Gran Pilar

Executive Summary

• Tocvan Ventures Corp. has commenced fieldwork and an airborne magnetics survey at its flagship Gran Pilar gold-silver project in Sonora, Mexico, with drilling and trenching preparations accelerating for a campaign starting before the end of the month.
• The company has secured full permit approval for a 10-year pilot mine facility, featuring a 50,000-tonne heap-leach pad and hydrometallurgical processing plant, targeting near-term production and early cash flow generation.
• Metallurgical results from bulk samples and gravity recovery tests indicate strong extraction economics, with gold recovery rates of 95-99% and silver recovery rates of 73-97%, supporting the transition from exploration to development.

Key Details

• Exploration Activities:
  • Initiated precision geological mapping, targeted sampling, and geophysical surveys.
  • Airborne magnetics survey is currently in flight to identify structural features and mineral-rich zones.
  • Drilling and trenching campaign slated to commence before the end of the month.
  • Approved for 45 drill pads and 67 trenches.
• Pilot Mine Permit & Infrastructure:
  • Secured full permit approval for a 10-year pilot mine facility.
  • Facility includes an initial 50,000-tonne-capacity heap-leach pad within a 4.5-hectare footprint.
  • Processing plant uses sodium cyanide leaching with a 60-to-90-day retention cycle.
• Metallurgical Results:
  • Pilar Bulk Sample: Achieved 62% gold recovery over a 46-day leaching period. Head grade was 1.9 g/t Au and 7 g/t Ag; extracted grade was 1.2 g/t Au and 3 g/t Ag.
  • Fine Fraction Testing: Agitated bottle roll tests showed rapid recovery: 80% gold and 94% silver after 24 hours.
  • Gravity Recovery: Composite samples returned 95-99% gold recovery and 73-97% silver recovery, including 99% gold and 73% silver from drill core at 120-meter depth.
• Target Areas & Historical Data:
  • South Block Main Zone: Follow-up on 2025 successes including 19.4 g/t Au over 3.1m (Feb 25, 2025), 5.4 g/t Au over 6.1m (May 7, 2025), and 136 g/t Ag over 10.7m (June 25, 2025).
  • South Block Placer Corridor: Soil samples up to 21.2 g/t Au and >2,000 g/t Ag; rock samples up to 7.3 g/t Au and 389 g/t Ag.
  • North Block: Two-meter chip sample returned 5.6 g/t Au and 106 g/t Ag; historic working sample returned 3.2 g/t Au and 1,225 g/t Ag.
• Historical Drill Highlights (Selected):
  • 2025 Diamond: 83.5m of 1.3 g/t Au (incl. 9.7m of 10.3 g/t Au); 97.4m of 0.7 g/t Au (incl. 36.3m of 1.6 g/t Au); 64.9m of 1.2 g/t Au (incl. 3.0m of 21.6 g/t Au).
  • 2025 RC: 106.8m of 0.6 g/t Au (incl. 3.1m of 19.4 g/t Au); 41.2m of 1.0 g/t Au (incl. 6.1m of 5.4 g/t Au).
  • 2024 RC: 42.7m of 1.0 g/t Au (incl. 3.1m of 10.9 g/t Au); 56.4m of 1.0 g/t Au (incl. 3.1m of 14.7 g/t Au).
  • 2022 Diamond: 116.9m of 1.2 g/t Au (incl. 10.2m of 12 g/t Au).
  • 2020 RC: 24.4m of 2.5 g/t Au (incl. 1.5m of 33.4 g/t Au).
  • Historic Core/RC: 15,000m drilled; highlights include 21.0m of 38.3 g/t Au.

Notable Quotes

• "We are excited to kick off this next phase of exploration at Gran Pilar, leveraging advanced geophysical methods to unlock the full potential of this promising district," said Brodie Sutherland, chief executive officer of Tocvan Ventures. "The airborne magnetics survey, combined with our upcoming drilling and trenching, represents a strategic approach to rapidly advance our understanding of the mineralization and move closer to realizing value for our shareholders through exploration discovery and pilot mine production."