Okla. Stat. tit. 42, § 42-161: Right to lien against railroads

Every mechanic, builder, artisan, workman, laborer, or other

person, who shall do or perform any work or labor upon, or furnish

any materials, machinery, fixtures or other thing towards the

equipment, or to facilitate the operation of any railroad, shall

have a lien therefor upon the roadbed, buildings, equipments,

income, franchises, and all other appurtenances of said railroad,

superior and paramount, whether prior in time or not, to that of all

persons interested in said railroad as managers, lessees,

mortgagees, trustees beneficiaries under trusts or owners.