Maaden says the binding term sheet is valid until March 31, 2027, unless the parties agree otherwise Saudi Arabian Mining Co. (Maaden) entered into a binding term sheet with MP Materials Corp. and Mountain JV, LLC.   The agreement, signed today, Nov. 19, outlined certain advisory and technical services, as well as the formation of a joint venture (JV) to establish, develop, and construct a rare earth element (REE) refining and separation facility in Saudi Arabia (the “Processing Facility”), according to a ...