This Statement confirms that the undersigned, Keith B. Grass, has
authorized and designated Terry S. Lisenby, James D. Frias, A. Rae Eagle
and Kelly J. Wilmoth to execute and file on the undersigneds
behalf all Forms 3, 4 and 5 (including any amendments thereto) that
the undersigned may be required to file with the U.S. Securities and
Exchange Commission as a result of the undersigneds ownership of or
transactions in securities of Nucor Corporation.  The authority of
Terry S. Lisenby, James D. Frias, A. Rae Eagle and Kelly J. Wilmoth
under this Statement shall continue until the undersigned is no longer
required to file Forms 3, 4 and 5 with regard to his ownership
of or transactions in Nucor Corporation, unless earlier revoked in
writing.  The undersigned acknowledges that Terry S. Lisenby,
James D. Frias, A. Rae Eagle and Kelly J. Wilmoth are not assuming
any of the undersigneds responsibilities to comply with Section 16
of the Securities and Exchange Act of 1934.