<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>4
<FILENAME>d03210exv99.txt
<DESCRIPTION>906 CERTIFICATION
<TEXT>
<PAGE>

                                   EXHIBIT 99

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

         In connection with the Annual Report of International Uranium
Corporation (the "Company") on Form 20-F for the fiscal year ended September 30,
2002 as filed with the Securities and Exchange Commission on the date hereof
(the "Form 20-F"), I Ron F. Hochstein, President and Chief Executive Officer of
the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that:

         (1) The Form 20-F fully complies with the requirements of Section 13(a)
or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

         (2) The information contained in the Form 20-F fairly presents, in all
material respects, the financial condition and results of operations of the
Company.

Dated: February 17, 2003

International Uranium Corporation

/s/ Ron F. Hochstein
-------------------------------------
Ron F. Hochstein
President and Chief Executive Officer

                                      F-19
<PAGE>
              CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO
                             18 U.S.C. SECTION 1350,
                       AS ADOPTED PURSUANT TO SECTION 906
                        OF THE SARBANES-OXLEY ACT OF 2002

         In connection with the Annual Report of International Uranium
Corporation (the "Company") on Form 20-F for the fiscal year ended September 30,
2002 as filed with the Securities and Exchange Commission on the date hereof
(the "Form 20-F"), I David C. Frydenlund, Vice President and Chief Financial
Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

         (1) The Form 20-F fully complies with the requirements of Section 13(a)
or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

         (2) The information contained in the Form 20-F fairly presents, in all
material respects, the financial condition and results of operations of the
Company.

Dated: February 17, 2003

International Uranium Corporation

/s/ David C. Frydenlund
------------------------------------------
David C. Frydenlund
Vice President and Chief Financial Officer

                                      F-20

</TEXT>
</DOCUMENT>
