GREENWICH, Conn., June 16, 2026 (GLOBE NEWSWIRE) -- Stardust Power Inc. (NASDAQ: SDST) ("Stardust Power" or the "Company"), an American developer of battery-grade lithium carbonate, today announced the commencement of site engineering activities at its lithium refinery site in Muskogee, Oklahoma, marking an important step in advancing the refinery's transition from front-end engineering into execution-level design. Brown & Root, a leading EPC firm, has been engaged to perform the work, representing another ...