Item 7.01. Regulation FD Disclosure.

In accordance with General Instruction B.2. of Form 8-K, the following information shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Olin disclaims any intention or obligation to update or revise this information.

Attached as Exhibit 99.1 and incorporated herein by reference, is a copy of the registrant's press release dated November 2, 2009 announcing that senior management will make presentations at the Oppenheimer Fourth Annual Industrials Conference in New York City on November 17, 2009 at 10:15 AM Eastern Time and at the Citigroup Global Markets Basic Materials Conference in New York City on December 1, 2009 at 2:00 PM Eastern Time. Olin's management will be available for one-on-one sessions during each of the conferences.

Copies of the presentation slides for the conferences will be available the evening prior to each event to all investors, news media and the general public on Olin's web site www.olin.com in the Investors section under Investor Presentations.

Item 9.01. Financial Statements and Exhibits.

Exhibit No. Exhibit
99.1 Press Release dated November 2, 2009

---