Software-driven mining startup Mariana Minerals closes $310 million Series B funding round, led by Khosla Ventures

TechFlow news, August 03, according to Fortune, software-driven mining startup Mariana Minerals completed a $310 million Series B financing round, led by Khosla Ventures, with participation from Andreessen Horowitz (a16z), Breakthrough Energy Ventures, Greenoaks, BHP Ventures, Mitsubishi Corporation, and other institutions. To date, the company's total financing has reached $400 million, with a valuation of $1.5 billion.

Mariana was co-founded in 2024 by Turner Caldwell, a former member of the Tesla factory design and construction team, and is headquartered in San Francisco, committed to reshaping the traditional mining industry with software technology. The company currently operates two mines: Copper One in Utah (copper mine, targeting an annual production of 50,000 tons of refined copper) and Lithium One in Texas (lithium mine, expected to enter commercial production in 2027).