Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
Mariana Minerals, a software-focused mining startup, raised a $310 million Series B led by Khosla Ventures, with participation from Andreessen Horowitz and other investors. The company plans to use the funding to support its copper and lithium projects in the United States.
Mariana Minerals raises $310 million in Series B financing led by Khosla Ventures to accelerate critical minerals production. Andreessen Horowitz, Breakthrough Energy Ventures, and other investors also participate; the company says the round brings total parent and project capital to about $400 million.
Mariana Minerals says it has restarted mining operations at Copper One in southeastern Utah under autonomous orchestration. The company says the site is ramping toward refined copper production after its acquisition in late 2025.
Mariana Minerals operates what it calls the world’s first autonomous mine at its Copper One site in Utah. The operation uses automated drills, robotic haul trucks, and an AI-enabled platform to extract and refine copper.
