
    (No. 6252
    Minnesota Mining and Manufacturing Company, Claimant, vs. State of Illinois, Secretary of State, Respondent.
    Opinion filed January 11, 1972.
    Charles W. Ott, Attorney for Claimant.
    William J. Scott, Attorney General; Saul R. Wexler, Assistant Attorney General, for Respondent.
   Perlin, C.J.  