07/21/2025 | Press release | Archived content
We're excited to announce Mariana's Series A funding, led by a16z, with continued support from seed investors Breakthrough Energy Ventures and Khosla Ventures, plus participation from strategic investors across the minerals industry. This round brings our total capital raised to $85M.
The world is at a critical inflection point. AI infrastructure, renewable energy, electric vehicles, and modern defense systems all run on critical minerals - and demand is skyrocketing. The combustion economy is transitioning to a minerals economy. We need to rebuild the minerals industry at a breakneck pace to match the vast industrial base the oil and gas industry has spent more than a century creating. To do this, we need to leverage everything at our disposal to build quickly, efficiently, and relentlessly.
But there is a problem: the construction and minerals sectors are old and slow - software and technology penetration lag every other industrial sector, let alone SaaS and financial services. As a result, over the past generation Western companies have ceded control of the minerals supply chain to aggressive, innovative Chinese companies that now dominate the industry. The West faces a shrinking labor pool, a difficult regulatory environment, and a challenging-to-extract resource base, leaving no clear path to delivering the metals that underpin the modern economy.
We started Mariana to address this challenge head on. We put in the hard yards to bring new resources and promising technologies into commercial operation. We combine world-class hard-tech engineering talent with in-house AI and machine learning tools (collectively MarianaOS), supercharging our ability to construct, commission and optimize minerals infrastructure at scale. We are currently developing lithium, copper, and nickel projects in the U.S., and will rapidly expand our project portfolio domestically and abroad to produce the minerals critical to our shared future. Our near-term goal is to build 10 projects in 10 years, fundamentally breaking the pace at which the industry moves today, and to accelerate from there.
With our Series A funding, we are scaling our operations, expanding the team, and accelerating the deployment of the MarianaOS platform across our project portfolio. We are at the beginning of a long and exciting journey, and Mariana's success hinges on assembling an extremely talented team with a wide diversity of skillsets. Our work stretches from optimizing micron-scale chemical processes to building and operating kilometer-scale infrastructure. MarianaOS makes bridging across scales and disciplines possible, giving our teams the tools to work smarter, move faster, and unlock the full potential of modern mineral operations. We are actively hiring across software, machine learning, mining, process design, plant engineering, construction, operations and commercial roles. If you are excited about the challenge of securing critical minerals responsibly, rapidly, and efficiently, Mariana is the place for you.
The backbone of the global economy is changing.
In the next 10 years, the world needs to build more than 500 new mines and refineries to meet the rising demand for copper, lithium, nickel, aluminum, manganese, cobalt, rare earths, synthetic and natural graphite, phosphoric acid, and uranium. The scale of the challenge is daunting - over the next 25 years, we'll need to produce more copper than in all human history combined.