Vicuña Corp. has submitted the second update of the Environmental Impact Assessment (EIA) for the Josemaría copper project, announcing a six-year extension to the mine’s life—from 19 to 25 years—thanks to increased exploitable resources. The revised design also features higher processing capacity and a more sustainable water management strategy, setting the stage for significant regional economic benefits and job creation.
By Panorama Minero
The company has officially filed its second Environmental Impact Assessment (EIA) update for the Josemaría project in San Juan Province. The key development is the extension of the mine’s operational life to 25 years, driven by the discovery of additional mineral resources. The updated plan strengthens the project's technical design and economic viability, positioning it as a long-term driver of regional growth.
Details of the update were shared this week with the communities of Iglesia and Jáchal in a series of briefings. Key changes include an increased ore processing rate of 175,000 tonnes per day and infrastructure upgrades, which are expected to significantly boost both direct and indirect employment—particularly during the peak construction phase.
A core feature of the update is a new multi-source water supply system, designed to reduce pressure on local aquifers. It includes a new wellfield at La Majadita, future plans to use desalinated water from the Pacific Ocean, and a recovery and reuse target of 73% of process water. These steps reinforce Vicuña’s commitment to sustainable resource use.
The updated technical studies also report improved cut-off grades for copper, gold, and silver, enhancing the project’s economic potential. Additionally, a tailored Training Plan will support increased hiring of local workers, while maintaining open and ongoing engagement with surrounding communities.
Josemaría is part of Vicuña Corp.’s portfolio, a joint venture between BHP and Lundin Mining. The company is also preparing a technical report aimed at integrating the Josemaría and Filo del Sol deposits—located in San Juan and the adjacent Atacama Region in Chile—into a single copper project. This integrated strategy will set the foundation for future permitting, financing, and construction.
