A view of Ramaco’s Brook mine property in Wyoming. Credit: Ramaco Resources. Coal producer Ramaco Resources (NASDAQ: METC, METCB) said it plans to set up a strategic stockpile of rare earth elements (REE) and critical minerals at its Brook mine in Wyoming.The stockpile is intended to address both private and public needs for secure, reliable access to REE and critical minerals vital for critical rare earth applications, Lexington, Kentucky-based Ramaco said Monday in a statement. Ramaco has teamed up with a ...