Chesapeake Gold cuts Metates heap oxidation time to 90 days, keeps gold recovery at 70%

• Chesapeake Gold outlined Phase III test results for its proprietary heap oxidation process at the Metates project in Durango, Mexico.
• Massive Intrusive domain reached 70% gold recovery, 61% silver recovery in 90 days, versus 180–240 days in earlier phases.
• Intrusive Breccia domain achieved 57% gold recovery, 60% silver recovery over 180 days, exceeding prior programs.
• HPGR crushing lifted direct cyanidation recoveries to 47% for gold, 65% for silver, up 16% and 23% versus conventional crushing.
• Work continues toward an optimization program, pilot-plant planning, and a prefeasibility study tied to recovering the San Vicente 3 concession.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Chesapeake Gold Corp. published the original content used to generate this news brief via Newsfile (Ref. ID: 202609220600NEWSFILECNPR____20260922_315365_1) on September 22, 2026, and is solely responsible for the information contained therein.