
    (No. 6207
    Mobil Oil Corporation, Claimant, vs. State of Illinois, Various Agencies, Respondent.
    
      Opinion filed April 18, 1972.
    
    Giffin, Winning, Lindner, Newkirk and Cohen, Attorney for Claimant.
    William J. Scott, Attorney General; William E. Webber, Assistant Attorney General, for Respondent.
   Perlin, C.J.  