Mariana engineers, builds, and operates mines and refineries using its proprietary MarianaOS platform, which integrates capital project execution (CapitalProjectOS), refinery operations (PlantOS), and mine management (MineOS) into a single AI and machine learning stack. MarianaOS compresses traditional 5-to-10 year project execution timelines by roughly half and reduces commissioning timelines well below industry benchmarks.

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Funding Events

Date	Amount	Type	Investors	Valuation
08/18/26	$310,000,000	Series B	Andreessen Horowitz BHP Ventures Breakthrough Energy Ventures Earthshot Ventures General Innovation Capital Partners Greenoaks Greycroft Halo Funds In-Q-Tel Khosla Ventures Mitsubishi Corporation Pax Ventures StepStone Group Washington Harbour Partners	undisclosed