Client Spotlight: Phoenix Tailings

About The Company

Phoenix Tailings is at the forefront of sustainable metals production, pioneering clean, zero-waste solutions for extracting critical minerals from mining byproducts. Headquartered in Massachusetts, the company leverages proprietary technology to recover valuable metals—such as rare earth elements, nickel, and iron—without the use of hazardous chemicals or fossil fuels. Where traditional metals production is destructive, Phoenix Tailings’ innovative approach not only reduces environmental impact but also helps address the global need for reliable, responsible sources of essential materials used in clean energy technologies, electronics, and national defense.

The company’s process stands out for its commitment to environmental stewardship and technological advancement. By transforming mining waste—known as tailings—into high-purity metals, Phoenix Tailings is closing the loop on resource use and helping remediate legacy mining sites. The company’s modular system is compatible with a wide array of ore types and industrial byproducts, ensuring that valuable resources are fully utilized and nothing is left behind.

In a significant milestone for the company and the broader critical minerals supply chain, Phoenix Tailings recently announced the closing of a $76 million Series B funding round. This round included an additional $33 million from strategic investors, as reported in April 2025, and was led by key players in the climate-tech and manufacturing sectors. The new capital will accelerate the commercialization of Phoenix Tailings’ rare earth metal refining technology and support the expansion of its operations in the United States. This funding is particularly timely as the US seeks to bolster domestic independence in rare earth metals, reducing reliance on foreign sources, and strengthening national supply chains.

Phoenix Tailings’ achievements have been widely recognized, including being named to the 2024 Global Cleantech 100 list. With growing partnerships across industry and government, and a mission aligned with global sustainability goals, Phoenix Tailings is poised to play a pivotal role in shaping the future of critical mineral supply—delivering both environmental and economic benefits for generations to come.

Wolf Greenfield & Phoenix Tailings 

Wolf Greenfield has been working with Phoenix Tailings since its formation. At Phoenix Tailings’ direction, and with a focus on Phoenix Tailings’ business goals, the team has built an extensive IP portfolio. Phoenix Tailings owns more than a dozen patent families directed to a number of core technologies, with coverage both in the United States and abroad.