FDR: “There would have been no second chance if we had failed once.”

That the President appoint a commission for these purposes.

Possession of any mine or mines taken under this order shall be terminated by the Secretary of the Interior as soon as he determines that such possession is no longer required for the successful prosecution of the war.

I would say the United Nations.

All Federal agencies are directed to cooperate with the Secretary of the Interior to the fullest extent possible.