Section 308.107 - Document discovery(a) Parties to proceedings set forth at § 308.1 of the Uniform Rules and as provided in the Local Rules may obtain discovery only through the production of documents. No other form of discovery shall be allowed.(b) Any questioning at a deposition of a person producing documents pursuant to a document subpoena shall be strictly limited to the identification of documents produced by that person and a reasonable examination to determine whether the subpoenaed person made an adequate search for, and has produced, all subpoenaed documents.56 FR 37975, Aug. 9, 1991, as amended at 80 FR 5012 , Jan. 30, 2015