EXHIBIT 99.1 ------------ OLIN 501 MERRITT 7, P.O. BOX 4500, NORWALK, CT 06856-4500 RICHARD E. KOCH, P.E. Vice President, Investor Relations and Public Affairs Phone: (203) 750-3254 Fax: (203) 750-3231 E-mail: rekoch@corp.olin.com OLIN CORPORATION FIRST QUARTER EARNINGS CONFERENCE CALL ANNOUNCEMENT Friday, April 27, 2001 9:00 AM Eastern Time A conference call to review first quarter results will be held on Friday, April 27, 2001 at 9:00 AM by Donald W. Griffin, Chairman, President and CEO; Anthony Ruggiero, Executive Vice President and CFO; and Richard Koch, Vice President, Investor Relations and Public Affairs. Prepared remarks will take about 20 minutes and will be followed by a question and answer period. Earnings, along with income statement and segment information, will be released on the morning of Friday, April 27. The release will be available on First ---------------------------- Call, Business Wire and Dow Jones News Service. If you would like to participate in the conference call, or listen to a replay of the call via PostView, please contact Victoria Garcia at (203) 750-3811. PostView will be available by telephone on Friday, April 27, from 1:00 PM ET through midnight -------------------------------------------------- Wednesday, May 2. - ------------------- The conference call will also be webcast live on our corporate website www.olin.com. - ------------- O L I N C O R P O R A T I O N