About Us
About OBY Critical Minerals Ltd.
OBY Critical Minerals Ltd. is a Canadian-based mineral exploration company focused on developing the Man of War Project in Minas Gerais, Brazil. The company is advancing one of the world's largest and highest-grade ionic clay-hosted rare earth systems, boasting a maiden resource of 1.35 billion tonnes.
- 0Bt Maiden Resource Estimate
- 0km² Total Land Holding
- 0% Magnet REO Content
- 0ppm Average TREO Grade
The Man of War Project
Engineering a Sustainable, Low-Impact REE Operation in Minas Gerais
Situated in a Tier-1 mining jurisdiction, the Man of War project leverages Brazil’s world-class infrastructure and low-cost renewable energy grid. Our operational philosophy is built on environmental stewardship—eliminating the need for traditional tailings dams and minimizing our carbon footprint through innovative processing.
Unlike traditional hard-rock deposits, our ionic clay system allows for a lower-cost, Western-based processing route. This is a vital differentiator in an industry seeking to reduce its reliance on Chinese supply chains for the Heavy Rare Earths (Dy, Tb) essential for high-performance EV motors and wind turbines.
Operational Efficiency
By utilizing simple ionic desorption over complex hard-rock crushing, OBY aims for industry-leading low CAPEX and sustained multi-decade operating margins.
ESG Excellence
Our flowsheet incorporates dry-stacked tailings and immediate backfilling, utilizing the region’s abundant 100% renewable hydroelectric power grid.
Strategic Edge
Positioned to become the premier non-Chinese source of critical magnet metals, delivering a secure and traceable supply chain to Western OEMs.
Critical
Powering the Future
Rare Earths: The Bedrock of Modern Innovation
Rare Earth Elements are the silent engines behind the global energy transition. From high-performance EVs and robotics to defense systems and aerospace, Magnet REEs (NdPr, Dy, Tb) are indispensable. OBY is positioned to deliver a reliable, ethical supply of these critical materials, ensuring Western manufacturers can scale without geopolitical compromise.
Scale
Tier-1 Asset Advantage
A District-Scale Ionic Clay System
OBY is accelerating the development of a 1.35 billion-tonne ionic clay-hosted system in Minas Gerais. Unlike traditional hard-rock mining, our project utilizes mild salt desorption to selectively recover high-value magnet metals. This metallurgical advantage allows for a capital-light flowsheet, ultra-low impurities, and high-grade economic returns throughout the commodity cycle.
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