
    (No. 6666
    Northern Propane Gas Company, Claimant, vs. State of Illinois, Department of Corrections, Respondent.
    
      Opinion filed July 14, 1972.
    
    Northern Propane Gas Company, Claimant, pro se.
    William J. Scott, Attorney General; William E. Webber, Assistant Attorney General, for Respondent.
   Perlin, C.J.  