X0201 42003-09-10 0000074303 OLIN CORP OLN 0001220613 HIGGINS WILLIAM W 54 BYRAM DRIVE GREENWICH CT 06830 1000Common Stock $1 par value1200DCommon Stock $1 par value224215IBy wifeCommon Stock $1 par value132093IBy trusteePhantom Stock Units2003-09-104A0341.31ACommon Stock341.3131212.834DThe reporting person disclaims beneficial ownership of these securities, and this report should not be deemed an admission that the reporting person is the beneficial owner of such shares for purposes of Section 16 or for any other purpose.Mrs. Higgins owns 79,538 shares outright and 144,677 shares held in trusts in which she has an interest.Dividend equivalents credited to the reporting person's account under the 1997 Stock Plan for Non-employee Directors at $18.09 per share as of 9/10/03 in exempt transactions. Security converts to common stock on a one-for-one basis.George H. Pain, Attorney-in-Fact2003-09-11