Franklin Roosevelt actually said...

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...

The Secretary of War is hereby authorized and directed, through and with the aid of any persons or instrumentalities that he may designate, ...