Okla. Stat. tit. 3, § 3-65.3: Eminent domain

In the acquisition of property by eminent domain proceedings

authorized by this act, the municipality shall proceed in the manner

now provided by law for the exercise of the right of eminent domain

by railroad corporations in this state. The fact that the property

to be acquired by eminent domain proceedings was acquired by its

owner by eminent domain proceedings shall not prevent its

acquisition by such proceedings by the municipality. For the

purpose of making surveys and examinations relative to any eminent

domain proceedings, it shall be lawful to enter upon any land, doing

no unnecessary damage. Notwithstanding the provisions of any other

statute or of any applicable municipal charter, the municipality may

take possession of any property to be acquired by eminent domain

proceedings at such time after the commencement of such proceedings

as is now provided by law. The municipality shall not be precluded

from abandoning such proceedings in any case where possession of the

property has not been taken.