POWER OF ATTORNEY



          The undersigned constitutes and appoints Hannah
Prior and John Kahle, and each of them, as the
undersigned's true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution, for the
undersigned and in the undersigned's name, place and stead,
to sign any and all SEC statements of beneficial ownership of
securities on Forms 3, 4 and 5 as required under Section
16(a) of the Securities Exchange Act of 1934, and to file the
same with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent
full power and authority to do and perform each act and thing
requisite and necessary to be done under said Section 16(a),
as fully to all intents and purposes as the undersigned might
or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent may lawfully do or cause
to be done by virtue hereof.

          A copy of this power of attorney shall be filed
with the Securities and Exchange Commission.  The
authorization set forth above shall continue in full force
and effect until the undersigned revokes such authorization
by written instructions to the attorney-in-fact.

          This power of attorney revokes my previous power of
attorney dated May 17, 1991.




Dated:  September 7, 2000.


                           /s/  John T. Thyen
Signature of Reporting Person


                           John T. Thyen, Senior Executive
Vice President
                           Name and Title