EDGAR SUPPORTING DOCUMENT

POWER OF ATTORNEY


KNOW ALL BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints David A. Westerlund and Charles
E. Baker and Robert W. McClelland, and each of them acting or
signing alone, as his or her true and lawful attorney-in-fact to:

(1) execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Ball Corporation (the
"Company"), any and all reports required to be filed by the
undersigned in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder;

(2) do and perform any and all acts for and on behalf
of the undersigned which may be necessary or desirable to
complete and execute any such Form 3, 4 or 5 or other required
report and timely file such report with the United States Securities
and Exchange Commission and any stock exchange or similar
authority; and

(3) take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest of, or
legally required by, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the
undersigned, pursuant to this Power of Attorney, shall be in such
form and shall contain such terms and conditions as such attorney-
in-fact may approve in his discretion.

The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform each and every act and
thing whatsoever requisite, necessary, and proper to be done in the
exercise of any of the rights and powers herein granted, as fully to
all intents and purposes as the undersigned might or could do if
personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or
his or her substitute or substitutes, shall lawfully do or cause to be
done by virtue of this Power of Attorney and the rights and
powers herein granted. The undersigned acknowledges that no
such attorney-in-fact, in serving in such capacity at the request of
the undersigned, is hereby assuming, nor is the Company hereby
assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file reports under Section
16 with respect to the undersigned's holdings of and transactions
in securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing
attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of this 25th day of January 2005.


Signature: /s/ John F. Lehman

Printed Name: John F. Lehman