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Highlights
- EV Resources has advanced dry commissioning across the grinding circuit at Tecomatlán.
- One of three mills are now operationally available, with full commissioning expected within four weeks.
- Mechanical refurbishment of Ball Mills #1 and #2 has been completed, while Mill #3 is progressing.
- Electrical upgrades, including VFD integration, have been completed to support staged commissioning.
- Phase 1 operations will require no additional permitting, enabling a defined pathway to production.
EV Resources Limited (ASX:EVR) has reached a defining stage in its project development journey, as activity at the Tecomatlán Processing Plant transitions from refurbishment into active commissioning. The shift reflects a broader evolution within the company, where infrastructure readiness begins to align with operational execution. At the centre of this transition is the grinding circuit, a key component that underpins the plant’s processing capability and signals progress toward production.
Grinding Circuit Takes Centre Stage
The advancement of dry commissioning across the grinding circuit marks a critical milestone for the Tecomatlán plant. This milestone effectively brings the “heart” of the plant into operational readiness, representing a clear transition from refurbishment into active commissioning and near term production positioning.
One of the three mills are now operationally available, while the third continues to progress under a structured schedule. This development places the core processing system into an operational state, bringing the plant closer to production readiness.
Mechanical refurbishment work has been completed on Ball Mills #1 and #2, including alignment, machining, and drive testing. Mill #3 is being finalised under a one-mill-per-week completion plan. Final alignment, electrical integration, and testing are progressing simultaneously, with full dry commissioning targeted within four weeks.
Structured Commissioning and Cost Efficiency
The commissioning process has been supported by a staged and cost-conscious approach. Electrical upgrades, including the integration of Variable Frequency Drives (VFD), have been completed, enabling sequential commissioning of the mills. A single VFD unit is currently being utilised to test all three mills, reducing upfront capital expenditure while validating operational performance.
Additional units are expected to be introduced as throughput increases toward steady-state operations. This approach reflects a focus on managing capital deployment while maintaining flexibility in scaling operations. Off-site fabrication of mill components in Durango has also contributed to reducing on-site costs without affecting project timelines.
Clear Pathway to Initial Production
The Tecomatlán Processing Plant benefits from a defined pathway to production, with Phase 1 gravity concentration operations requiring no additional permitting. This allows the company to move forward without regulatory delays, supporting a streamlined transition into production.
The processing design incorporates a two-stage gravity concentration system, along with thickening and dry tailings filtration. The flowsheet is structured to operate without reagents, resulting in a lower environmental footprint. Metallurgical characteristics of the Los Lirios mineralisation continue to support concentrate production with low impurity levels and suitable processing attributes.
Capital Discipline and Execution Strategy
Throughout the refurbishment and commissioning phases, EV Resources has maintained a focus on capital discipline. Strategic decisions during procurement, including the deferral of certain contract addendums, have avoided unnecessary expenditure. Approximately USD 175,000 in costs were managed through this approach, ensuring that capital allocation remained aligned with operational priorities.
The staged restart strategy and targeted investment approach have contributed to reducing execution risk as the company progresses toward production.
As the Tecomatlán plant advances toward production readiness, EV Resources continues to position itself within the antimony supply chain. The project is aligned with broader supply dynamics, where antimony remains a designated critical mineral across multiple regions, including the United States, Europe, and Australia. The company’s asset base, including the Tecomatlán Processing Plant and the Los Lirios Antimony project, forms part of a broader strategy to support supply chain development in mining-friendly jurisdictions.
EVR shares traded at AUD 0.0090, at the time of writing on 05 May 2026.
