A deposition upon written questions may be taken of a public or private corporation, partnership, association, governmental agency other than the Federal Trade Commission, or any bureau or regional office of the Federal Trade Commission in accordance with the provisions of § 3.33(c) . Within 30 days after the notice and written questions are served, any other party may serve cross questions upon all other parties. Within 10 days after being served with cross questions, the party taking the deposition may serve redirect questions upon all other parties. Within 10 days after being served with redirect questions, any other party may serve recross questions upon all other parties. The content of any question shall not be disclosed to the deponent prior to the taking of the deposition. A copy of the notice and copies of all questions served shall be delivered by the party taking the deposition to the officer designated in the notice, who shall proceed promptly to take the testimony of the deponent in response to the questions and to prepare, certify, and file or mail the deposition, attaching thereto the copy of the notice and the questions received by him or her. When the deposition is filed the party taking it shall promptly give notice thereof to all other parties.
16 C.F.R. §3.33