To Whom It May Concern:

I, Gene C. Wulf, hereby appoint Sheri H. Edison and
Scott B. Ullem, 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 15th day of June 2010.


/s/ Gene C. Wulf
Gene C. Wulf




Signed or attested before me on the 15th day of June 2010 by
Gene C. Wulf.


/s/ Claudia Monroe
Notary Public

Claudia Monroe, Notary Public
State of Wisconsin
My Commission Expires September 2, 2012