
    (No. 6171
    Gulf Oil Corporation, Acting by and through Gulf Oil Company, U.S., A Division thereof, Claimant, vs. State of Illinois, Department of Aeronautics, Respondent.
    
      Opinion filed August 30, 1971.
    
    Gulf Oil Corporation, Claimant, pro se.
    William J. Scott, Attorney General; William E. Webber, Assistant Attorney General, for Respondent.
   Perlin, C.J.  