<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>3
<FILENAME>imccert.txt
<DESCRIPTION>99.1
<TEXT>
                                                                Exhibit 99.1



                                  CERTIFICATION
                       PURSUANT TO 18 U.S.C. SECTION 1350,
           AS ADOPTED BY SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     I, Ian M. Cumming,  as Chairman of the Board and Chief Executive Officer of
Leucadia National Corporation (the "Company") certify, pursuant to 18 U.S.C. ss.
1350, as adopted by Section 906 of the  Sarbanes-Oxley  Act of 2002,  that to my
knowledge:

     (1) the  accompanying  Form 10-Q report for the period ending June 30, 2002
as filed with the U.S.  Securities  and Exchange  Commission  (the  "Report")
fully complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934, as amended; and

     (2)  the  information  contained  in the  Report  fairly  presents,  in all
material  respects,  the  financial  condition  and results of operations of the
Company.


Dated:  August 14, 2002



                                                     By:  /s/ Ian M. Cumming
                                                     --------------------------
                                                     Ian M. Cumming
                                                     Chairman of the Board and
                                                     Chief Executive Officer


</TEXT>
</DOCUMENT>
