Nicor Inc. Form 10-K Exhibit 24.01
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS:
That the undersigned, a Director, Officer, or Director and Officer of Nicor Inc., an Illinois corporation, does
hereby constitute and appoint D. L. CYRANOSKI and M. T. LORENZ, and each of them, the undersigned's
true and lawful attorneys and agents, each with full power and authority (acting alone and without the other) to
execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 1999
Annual Report on Form 10-K (and such amendment or amendments thereto as may be necessary) to be filed
pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934, hereby granting to such attorneys and
agents, and each of them, full power of substitution and revocation in the premises; and hereby ratifying and
confirming all that such attorneys and agents, or any of them, may do or cause to be done by virtue of these
presents.
IN WITNESS WHEREOF, I have hereunto signed this Power of Attorney this 20th day of January, 2000.
ROBERT M. BEAVERS, JR.
Robert M. Beavers, Jr.
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS:
That the undersigned, a Director, Officer, or Director and Officer of Nicor Inc., an Illinois corporation, does
hereby constitute and appoint D. L. CYRANOSKI and M. T. LORENZ, and each of them, the undersigned's
true and lawful attorneys and agents, each with full power and authority (acting alone and without the other) to
execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 1999
Annual Report on Form 10-K (and such amendment or amendments thereto as may be necessary) to be filed
pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934, hereby granting to such attorneys and
agents, and each of them, full power of substitution and revocation in the premises; and hereby ratifying and
confirming all that such attorneys and agents, or any of them, may do or cause to be done by vi