Sec. 1.730  Other forms of discovery.

    (a) If a party believes it needs to engage in some form of discovery 
other than by written interrogatories under Sec. 1.729, including but 
not limited to the production of documents, the taking of depositions, 
or the propounding of additional interrogatories, the party may file a 
motion with the Commission requesting that such discovery be permitted. 
The motion should state with specificity the type of discovery 
requested, the information which is expected to be elicited, the 
relevance of such information to the resolution of the proceeding, and 
must also comply with the requirements of Sec. 1.727 hereof, pertaining 
to motions generally. Such motions will not be routinely granted except 
for good cause shown.
    (b) The party from whom the discovery is sought may file an 
opposition to a motion seeking discovery within 10 days after the motion 
is filed. No reply is permitted.
    (c) Motions seeking discovery may be filed only during the period 
beginning with the service of a complaint and ending 30 days after the 
date an answer is filed or 15 days after responses to interrogatories 
under Sec. 1.729 are filed, whichever period is longer, except where the 
movant demonstrates that

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the need for such discovery could not, even with due diligence, have 
been ascertained within this period.
    (d) Documents produced through discovery shall not be filed with the 
Commission unless so ordered by the Commission or its staff.
[ 53 FR 11854 , Apr. 11, 1988, as amended at  58 FR 25572 , Apr. 27, 1993]