The testimony of any witness, including any party represented by counsel, may be taken by deposition or interrogatory according to the Federal Rules of Civil Procedure as supplemented by local rules of practice for the Federal district court for the judicial district in which the case is pending. However, such depositions or interrogatories must be completed within reasonable times to be fixed by the Chief Administrative Law Judge or the administrative law judge assigned to the case. [42 FR 42552, Aug. 23, 1977]