To Whom It May Concern:

I, Philip G. Weaver, hereby appoint James J. Seifert, Gene C.
Wulf and Stanley A. Jaffy, each and individually, my true and
lawful attorney-in-fact, for and in my name, place and stead,
with full power of substitution, to sign on my behalf any and
all Forms 3, 4 and 5 for the submission of such forms to the
Securities and Exchange Commission, and to take any and all
actions necessary or advisable to file such Forms with the
Securities and Exchange Commission.

IN WITNESS WHEREOF, the undersigned has caused these presents to
be executed on the 11th day of April 2005.


/s/ Philip G. Weaver
Philip G. Weaver




Signed or attested before me on the 11th day of April 2005 by
Philip G. Weaver.


/s/ Julie Grismore
Notary Public

Julie Grismore
Notary Public, State of Ohio
My Commission Expires January 16, 2006