Okla. Stat. tit. 66, § 66-169: Must begin work in two years

Every railroad corporation accepting the benefits of this

article regarding domestication or increase of stock, organized

under the laws of any other state or territory or of the United

States, or the Territory of Oklahoma or the Indian Territory that

shall not within two (2) years commence, in good faith, its works as

contemplated in its charter, shall forfeit all rights hereunder.