PMET demonstrates >97% caesium extraction from pollucite concentrate

PMET Demonstrates >97% Caesium Extraction from Pollucite Concentrate Canada NewsWire Multiple pathways to value-add caesium chemicals identified during bench-scale extraction testwork at SGS Lakefield and through Koch Technology Solutions Phase 1 program MONTREAL , July 12, 2026  /CNW/ - July 13, 2026 – Sydney, Australia Highlights SGS Canada Caesium Extraction Test Program Leaching of pollucite concentrate using sulphuric acid was highly successful with >97% recovery of the caesium (Cs) into solution achieved. Bench-scale testwork on impurity removal was also successful , demonstrating efficient removal of key impurities such as aluminum. Opportunity identified to potentially recover a rubidium by-product .

Primary objective of program was fully realized – that being to identify a preliminary set of conditions to extract caesium from pollucite concentrate (produced from the Vega Zone) at high recovery while characterizing (and limiting) the impurity profile. Next steps will build upon this extraction phase of work with a primary objective to produce gram quantities of high -purity Cs-sulphate, Cs-carbonate, Cs-formate , and potentially Rb-carbonate. Koch Technology Solutions Caesium Extraction Test Program PMET is working with Koch Technology Solutions, part of Koch Inc., evaluating advanced processing pathways to value-added caesium products.

Preliminary results from Phase 1 indicate both synthetic and live Pregnant Leaching Solution yield very selective high loading factors of caesium recovery using Koch's proprietary flow sheet. PMET Resources Inc. (the "Company" or "PMET") (TSX: PMET) (ASX: PMT) (OTCQX: PMETF) (FSE: R9GA) is pleased to provide an update on two parallel bench-scale testwork programs focused on caesium (Cs) extraction from pollucite samples from the Shaakichiuwaanaan Project. Both approaches – conventional by SGS Canada, and proprietary by Koch Tec