Sec.  1.1   Proceedings before the Commission.

   The Commission may on its own motion or petition of any interested party
   hold  such  proceedings  as it may deem necessary from time to time in
   connection  with the investigation of any matter which it has power to
   investigate under the law, or for the purpose of obtaining information
   necessary or helpful in the determination of its policies, the carrying out
   of its duties or the formulation or amendment of its rules and regulations.
   For such purposes it may subpena witnesses and require the production of
   evidence.  Procedures  to  be followed by the Commission shall, unless
   specifically prescribed in this part, be such as in the opinion of the
   Commission will best serve the purposes of such proceedings.

   (Sec. 403, 48 Stat. 1094; 47 U.S.C. 403)