Nicor Inc.

Form 10-Q/A

Exhibit 99.02

CERTIFICATION

I, Kathleen L. Halloran, Executive Vice President Finance and Administration of Nicor Inc., certify that:

1) This quarterly report on Form 10-Q/A of Nicor Inc. fully complies with the requirements of Section 13 (a) or 15 (d) of the Securities Exchange Act of 1934; and

2) The information contained in this quarterly report fairly presents, in all material respects, the financial condition and results of operations of Nicor Inc.

Date March 7, 2003	/s/ KATHLEEN L. HALLORAN
	Kathleen L. Halloran Executive Vice President Finance and Administration