Exhibit 99.1



      CERTIFICATION 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 Olin Corporation (the "Company") on Form
10-K/A for the period ended December 31, 2001 as filed with the Securities and
Exchange Commission (the "Report"), I, Joseph D. Rupp, 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 Report fully complies with the requirements of Section 13(a) of the
Securities Exchange Act of 1934; and (2) the information contained in the Report
fairly presents, in all material respects, the financial condition and results
of operations of the Company.


/s/ Joseph D. Rupp
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Signature
Joseph D. Rupp
President and Chief Executive Officer

Dated:  August 13, 2002