EV Resources Ltd (ASX:EVR, OTC:EVRSF, FRA:R1EA) has strengthened both sides of its antimony strategy, defining new exploration targets in Nevada while advancing a near-term production pathway at its Tecomatlán processing plant in Mexico.
The company has outlined a 10-to-12-month timeline to complete and operate a direct-to-flotation circuit at Tecomatlán using third-party ore, while maiden soil geochemistry at its 100%-owned Milton and Dollar projects in Nevada has identified structurally controlled antimony-gold and polymetallic mineral corridors.
Tecomatlán pathway targets near-term production
EVR's updated Tecomatlán development plan combines the original gravity-only circuit and flotation circuit into a single integrated build, designed to process third-party ore secured under non-binding memoranda of understanding.
The company said the revised strategy supersedes its earlier end-of-CY2026 guidance for a gravity-only circuit, with the additional time aimed at improving recovery outcomes and producing a higher-value concentrate.
Tecomatlán is being positioned as a hub-and-spoke processing facility for regional antimony miners across Puebla, Oaxaca and Guerrero, offering an alternative to smelters up to 1,200 kilometres away. EVR said ore volumes contemplated under existing non-binding MoUs cover more than 50% of Tecomatlán’s nameplate capacity, with further MoUs being sought.
Flotation improves antimony recoveries
Metallurgical test work from the Chinantla third-party feedstock source confirmed a flotation-led route recovered about 81% of contained antimony and produced concentrate grading 42.4% Sb, compared with gravity concentration recovery of 29.25% Sb and concentrate grading 20.54% Sb.
EVR will continue to advance the gravity circuit to preserve processing flexibility, including for Los Lirios material. Previous test work from Los Lirios returned gravity recoveries of up to 90.8% Sb, while flotation test work on a high-grade sulphide sample returned 99.2% Sb recovery.
Los Lirios work supports Phase 2 drilling
At Los Lirios, EVR has confirmed laboratory assays from the Cofradia zone, where channel sampling returned 2.2 metres at 5.20% antimony, validating previously reported pXRF results.
Phase 1 drilling at Los Lirios had now concluded, with results being incorporated alongside recent channel sampling and CSMAT geophysics to help vector targets for Phase 2 drilling. EVR said recent exploration confirmed Los Lirios as a very shallow strata-bound carbonate replacement deposit, with high-grade antimony spatially related to feeder structures.
Nevada soil work defines new antimony-gold corridors
In the US, EVR’s maiden high-density soil geochemistry program at Milton and Dollar in Nye County, Nevada, has produced the company’s first systematic target areas across its domestic antimony portfolio.
The survey comprised 567 soil samples, including 324 at Milton and 243 at Dollar, collected on 100-metre lines with 25-metre stations.
At Milton, geochemical fingerprinting defined a coherent 1,100-metre anomalous pathfinder corridor of gold, arsenic, antimony, mercury and thallium, directly matching mapped north-south jasperoid trends.
At Dollar, high-resolution sampling mapped two mineralised systems: a northern Dollar Mine node with soil peaks up to 0.415 ppm gold and 2,080 ppm antimony, and a southern Resurrection node returning up to 17.05 ppm silver, 872 ppm lead and 2,680 ppm zinc.
Next steps
EVR plans to advance rock-chip and channel sampling across the Milton jasperoid ridges and Dollar copper breccias, review ground geophysics options and use the combined data to generate a maiden diamond or RC drilling campaign.
In Mexico, the company’s next steps include submitting the Informe Preventivo, completing MIA preparation, advancing further metallurgical test work, progressing feedstock MoUs into definitive agreements and continuing offtake discussions.
About EV Resources
EV Resources is a critical minerals exploration and development company focused on securing the North American antimony supply chain. Its portfolio includes the Tecomatlán Processing Plant and Los Lirios Antimony Project in Mexico, as well as the 100%-owned Dollar and Milton antimony projects in Nevada.