Franklin Roosevelt actually said...

Possession of the mines, collieries, and facilities taken under this order shall be terminated by the Secretary of the Interior within sixty...

The Secretary of the Interior is authorized and directed to take possession of the mines, collieries, and preparation facilities designated ...

to operate or to arrange for the operation of the plants and facilities in any manner that he deems necessary for the successful prosecution...

Possession, control, and operation of any plant or facility, or part thereof, taken under this order shall be terminated by the Secretary of...