SuperCritical Materials has appointed Neal Froneman, Sibanye-Stillwater’s (JSE: SSW) (NYSE: SBSW) founder and former CEO, as its new chair of the board of directors. Froneman joins SuperCritical with more than three decades of executive leadership experience in global mining, resource development and capital markets. “Neal has spent his career building resource companies, developing complex industrial projects and creating long-term value for shareholders,” SuperCritical CEO Alexander Canon Bryan said in a news release. An investor in SuperCritical, Froneman says he was drawn to the company by its market opportunity and the company’s approach to fuel‑production infrastructure. SuperCritical is currently expanding nuclear fuel supply by commercializing advanced seawater uranium extraction to support nuclear growth and the rising energy demands of AI data centres.