
    (No. 6721
    Atlantic Richfield Company, Claimant, vs. State of Illinois, Department of Public Aid, Respondent.
    
      Opinion filed September 22, 1972.
    
    Atlantic Richfield Company, Claimant, pro se.
    William J. Scott, Attorney General; Saul R. Wexler, Assistant Attorney General, for Respondent.
   Perlin, C.J.  