Exhibit 99.1

Olin to Present at Basic Materials and Chemical Conferences

    NORWALK, Conn.--(BUSINESS WIRE)--April 26, 2004--Olin
Corporation's (NYSE: OLN) senior management will make presentations at
the Morgan Stanley Chemical Conference in Chicago on May 4 and the
Bank of America Basic Materials Conference in New York City on May 5.
    Copies of the presentation slides and background information will
be available on May 4 to all investors, news media and the general
public on Olin's web site www.olin.com in the Investor section under
Recent Press Releases and Speeches.
    Olin Corporation is a manufacturer concentrated in three business
segments: Metals, Chlor Alkali Products and Winchester. Metals
products include copper and copper alloy sheet, strip, foil, and rod,
welded tube, fabricated parts, metal packages and stainless steel
strip. Chlor Alkali Products manufactures chlorine and caustic soda,
sodium hydrosulfite, hydrochloric acid and bleach products. Winchester
products include sporting ammunition, canister powder, reloading
components, small caliber military ammunition and industrial
cartridges.

    CONTACT: Olin Corporation
             Investor Contact:
             Richard E. Koch, 203-750-3254
                 or
             Press Contact:
             Thomas J. Fitzgerald, 203-750-3831