Altoro Metals Limited is a mineral exploration and project development company focused on the identification, acquisition, exploration, and commercial development of base metal and critical mineral resource properties. The company specializes in the discovery and delineation of high-grade polymetallic mineral deposits, with core operations centered on zinc, lead, silver, and copper assets. Its principal business activities and project portfolio include the Novales-Udias Zinc-Lead Project, a flagship exploration and development asset in the Cantabrian Basin of northern Spain encompassing the historic high-grade San Jose underground mine and the Buenahora exploration permit; the Guajaraz Polymetallic Project, a zinc-lead-silver-copper exploration property situated in the Toledo province of central Spain; the Rosario Copper Project, an exploration asset located within the Atacama region of Chile; and residual joint venture and royalty interests in base and precious metals exploration licenses across New South Wales and South Australia. The company offers systematic mineral exploration and resource definition services, comprising geological mapping, surface geochemical sampling, and geophysical surveying; diamond core and reverse circulation exploration drilling programs; 3D geological modeling, structural analysis, and JORC-compliant mineral resource estimation; underground mine inspection, geotechnical modeling, and rehabilitation assessment; and metallurgical test work and preliminary engineering studies aimed at supporting mine restart and commercial production pathways.
Founded in 1987 and headquartered in Perth, Western Australia, Altoro Metals Limited maintains operational hubs across Spain, Australia, and South America, directing its exploration activities toward supplying essential industrial and critical metals to global raw material markets, metal smelting facilities, and clean energy technology supply chains.
In recent corporate developments, the company executed a major corporate reorganization and rebranding, changing its name from Variscan Mines Limited to Altoro Metals Limited in July 2026, accompanied by an official ticker symbol change to ARO on the Australian Securities Exchange. To accelerate its operational focus on European zinc and critical metal deposits, the company completed a five million Australian dollar capital raising through an institutional and sophisticated investor placement. Operationally, Altoro Metals has launched maiden diamond drilling campaigns at the Guajaraz polymetallic project to test priority high-grade targets, advanced confirmation and extensional drilling at the Novales-Udias project, and initiated updated technical and environmental assessment studies to evaluate fast-tracked underground mining restart options at the San Jose deposit.