557C.5  Reservation in other conveyance.
  A reservation of a mineral interest in coal or an exception of a mineral interest in coal, contained in a conveyance of the interest out of which it is carved, by a nonowner of the mineral interest in coal shall not be deemed to satisfy the requirements of this chapter or as a revival of a mineral interest in coal otherwise extinguished under this chapter.
91 Acts, ch 183, §6