Mining software platform MarianaOS operator Mariana Minerals secured $310M in Series B funding, bringing total capital raised to $400M. The round reflects investor confidence in automated mining technology.
Mariana Minerals builds and operates mines using its proprietary MarianaOS software platform, positioning itself in the metals extraction sector. Founder Turner Caldwell has framed the investment thesis around a shift from fossil fuels to metals demand, as industries pivot toward renewable energy and electrification.
The company's software platform suggests a focus on automation and operational efficiency in mining operations—sectors traditionally capital-intensive and labor-dependent. The $310M Series B marks significant growth, with funding more than tripling from an apparent earlier valuation.
Mining automation addresses persistent industry challenges: safety, operational costs, and environmental impact. As global demand for metals like lithium, cobalt, and copper accelerates to support battery production and grid infrastructure, technology-driven extraction becomes increasingly relevant.
The funding validates a market opportunity in digitizing legacy mining operations, though execution at scale across diverse geological conditions remains a key test for the company.
Defense tech company Hadrian secured $1.37 billion in Series D funding at an $8 billion valuation. The capital will fund expansion of its manufacturing facilities and Opus software platform.
Singapore-based AI infrastructure startup Acrab raised $130 million in Series B funding, surpassing $480 million in total capital raised. The round was backed by existing investors including Vertex Ventures.
Herdr, a runtime platform, has been accepted into Y Combinator's latest batch. The company is maintaining its open-source commitment despite the funding.
ProvenMetal, a Y Combinator S26 startup, manufactures assembled circuit boards domestically in days rather than weeks. The service accepts design files and specifications, addressing a critical gap in US semiconductor supply chains.