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 an officer 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 13th day of January 2005.


Signature: /s/ Harold L. Sohn

Printed Name: Harold L. Sohn