(a) No employee or former employee of the Commission shall, in response to a demand of a court or other authority, produce a record or disclose any information relating to any record of the Commission, or disclose any information or produce any material acquired as part of the performance of his official duties or because of his official status without the prior, written approval of the General Counsel of the Commission.

(b) Any expert or opinion testimony by a former employee of the Commission shall be excepted from the requirements of this part where the testimony involves only general expertise gained while employed at the Commission.