This Agreement shall inure to the benefit of and bind the parties and their respective permitted successors and assigns, provided, however that this Agreement may not be assigned or otherwise transferred by either party without the written consent of the other party (which consent shall not be unreasonably withheld). Any assignment without such consent shall be void. Such consent shall not be required for assignment or transfer by a party to an affiliate controlled by that party or to an affiliate under common control with the party or to a party purchasing substantially all of the assets constituting the Plant or the Mine.