Or. Rev. Stat. § 305.390
A subpoena for the production of records may be issued under ORS 305.190 or 305.420 to the owner of an industrial plant, as defined in ORS 308.408, for purposes of a proceeding involving the determination of the value of a different industrial plant for ad valorem property taxation, only under the following conditions:
[1993 c.353 §4]