ESGold Reports Positive Results from Colombian Tailings

Executive Summary

• ESGold released initial bench‑scale metallurgical test results from bulk tailings samples in Colombia’s Bolívar region, showing average gold recoveries of ~52% and high-grade gravity concentrates (~59 g/t Au, ~193 g/t Ag).
• The simple, low‑reagent gravity circuit validates the company’s clean extraction model and supports plans for pilot‑scale testing and potential cash‑flow generation without conventional mining.
• ESGold will pursue parameter optimization, confirmatory sampling, and on‑site pilot work to improve recoveries and finalize a modular flowsheet, strengthening its growth outlook alongside the Montauban project.

Key Details

• Feed Grades (bench scale): Mean analyzed ~4.88 g/t Au and ~35.7 g/t Ag; calculated balance ~5.05 g/t Au and ~30.2 g/t Ag.
• Gold Recovery: Varied across tests; highest reported ~52% Au recovery with clean separation; lower recoveries attributed to manual, irregular feeding.
• Silver Recovery: Not quantified; noted as variable with potential for improvement through optimization.
• Concentrate Grades (gravity): Average ~59 g/t Au and ~193 g/t Ag across tests; variability observed test‑to‑test.
• Mass Pull: Approximately 2.8% of feed converted to gravity concentrate on average.
• Processing Circuit: Simple gravity separation with no additional chemical reagents; compatible with ESGold’s low‑reagent, low‑emission flowsheet used at the Montauban project.
• Secondary Upgrade Step: Planned use of a Gemini table or similar to further reduce concentrate mass before downstream treatment.
• Economic Significance (illustrative): Tailings are surface material already processed for mercury removal, eliminating drilling, blasting, and haulage; could shorten path to cash flow if pilot results confirm stable recoveries and marketable concentrates.
• Next Steps:
• Optimize grind size, table slope, water flow.
• Conduct confirmatory sampling across the tailings area.
• Initiate on‑site pilot‑scale testing in Colombia.
• Refine recoveries, validate concentrate specifications, finalize modular flowsheet design for potential deployment.
• Qualified Person: John Langton (P.Geo.) reviewed and approved technical content; bench testing supervised by Edmond St‑Jean, Ing.

Notable Quotes

“These results provide clear validation of the strong potential economics that can be achieved through a simple, clean extraction process,” – Gordon Robb, CEO, ESGold Corp.