Patented Proprietary Recovery Process Demonstrated at Gediktepe

RNS Number: 4272K
ACG Metals Limited
01 July 2026

ACG is pleased to announce a sustained improvement in gold recovery at the Gediktepe Mine, Türkiye, achieved through introducing a new product to the metallurgical recovery process: A proprietary technical approach developed by the Company, for which patent protection has been secured in Türkiye and is progressing in 35 other countries.

Highlights

• Commercial gold recovery of c.85%, compared to c.75% previously
• Cyanide consumption reduced by c.45%
• Reduced leach cycle times
• Lower operating costs and improved margins
• Demonstrated under commercial operating conditions
• Patent approved in Türkiye for the proprietary process, with international applications in progress

Work undertaken between April 2025 and June 2026 has delivered sustained and repeatable improvements in heap leach performance under commercial operating conditions. Higher recoveries, lower reagent consumption and faster kinetics are contributing to stronger cash flow and improved operating performance for oxide ore.

The patented process reflects a structured optimisation approach developed internally by the Company, with broader applicability. The Company expects these improvements to continue through the remaining oxide phase and intends to apply the approach to sulphide and transitional ore.

As the Company advances towards sulphide processing and copper production, these results demonstrate its ability to deliver practical metallurgical optimisation ahead of its sulphide ramp-up.

Artem Volynets, Chairman and Chief Executive Officer of ACG, said:

“These proprietary improvements in heap leach performance demonstrate the strength of our world-class technical team. As we move into the sulphide ramp-up phase and copper production, disciplined process control and recovery efficiency will be key to delivering performance and optimising cash flow.”