EXHIBIT 4(G) December 15, 1993 Bank of Boston Connecticut c/o Bank of Boston Large Corporate New England 100 Federal Street Boston, MA 02110 Ladies/Gentlemen: We refer to the Credit Agreement, dated as of September 30, 1993 ("Credit Agreement"), among Olin Corporation ("Olin"), Bank of Boston Connecticut, Chemical Bank, Citibank, N.A., Credit Suisse, Morgan Guaranty Trust Company of New York, The Boatmen's National Bank of St. Louis and The Chase Manhattan Bank, N.A. We refer also to the charge in the amount of $131.8 million after taxes (the "Charge"), relating to (a) personnel reductions, (b) business restructurings, (c) environmental exposures, (d) closed sites, and (e) long term disability (SFAS 112) and miscellaneous asset write-offs proposed to be taken by Olin in the fourth quarter of 1993. Kindly confirm below the bank's agreement that, for purposes of calculating "EBIT", as defined in the Credit Agreement, the Charge shall be excluded from the determination of net income. Very truly yours, OLIN CORPORATION By _________________________________ Vice President and Treasurer Confirmed: BANK OF BOSTON CONNECTICUT By _________________________________ Name: Title: EXHIBIT 4(G) December 15, 1993 Chemical Bank 270 Park Avenue New York, NY 10017 Ladies/Gentlemen: We refer to the Credit Agreement, dated as of September 30, 1993 ("Credit Agreement"), among Olin Corporation ("Olin"), Bank of Boston Connecticut, Chemical Bank, Citibank, N.A., Credit Suisse, Morgan Guaranty Trust Company of New York, The Boatmen's National Bank of St. Louis and The Chase Manhattan Bank, N.A. We refer also to the charge in the amount of $131.8 million after taxes (the "Charge"), relating to (a) personnel reductions, (b) business restructurings, (c) environmental exposures, (d) closed sites, and (e) long term disability (SFAS 112) and miscellaneous asset write-offs proposed to be taken by Olin in the fourth quarter of 1993. Kindly confirm below the bank's agreement that, for purposes of calculating "EBIT", as defined in the Credit Agreement, the Charge shall be excluded from the determination of net income. Very truly yours, OLIN CORPORATION By _________________________________ Vice President and Treasurer Confirmed: CHEMICAL BANK By _________________________________ Name: Title: EXHIBIT 4(G) December 15, 1993 Citibank, N.A. 399 Park Avenue 8th Floor New York, NY 10043 Ladies/Gentlemen: We refer to the Credit Agreement, dated as of September 30, 1993 ("Credit Agreement"), among Olin Corporation ("Olin"), Bank of Boston Connecticut, Chemical Bank, Citibank, N.A., Credit Suisse, Morgan Guaranty Trust Company of New York, The Boatmen's National Bank of St. Louis and The Chase Manhattan Bank, N.A. We refer also to the charge in the amount of $131.8 million after taxes (the "Charge"), relating to (a) personnel reductions, (b) business restructurings, (c) environmental exposures, (d) closed sites, and (e) long term disability (SFAS 112) and miscellaneous asset write-offs proposed to be taken by Olin in the fourth quarter of 1993. Kindly confirm below the bank's agreement that, for purposes of calculating "EBIT", as defined in the Credit Agreement, the Charge shall be excluded from the determination of net income. Very truly yours, OLIN CORPORATION By _________________________________ Vice President and Treasurer Confirmed: CITIBANK, N.A. By _________________________________ Name: Title: EXHIBIT 4(G) December 15, 1993 Credit Suisse 12 East 49th Street New York, NY 10017 Ladies/Gentlemen: We refer to the Credit Agreement, dated as of September 30, 1993 ("Credit Agreement"), among Olin Corporation ("Olin"), Bank of Boston Connecticut, Chemical Bank, Citibank, N.A., Credit Suisse, Morgan Guaranty Trust Company of New York, The Boatmen's National Bank of St. Louis and The Chase Manhattan Bank, N.A. We refer also to the charge in the amount of $131.8 million after taxes (the "Charge"), relating to (a) personnel reductions, (b) business restructurings, (c) environmental exposures, (d) closed sites, and (e) long term disability (SFAS 112) and miscellaneous asset write-offs proposed to be taken by Olin in the fourth quarter of 1993. Kindly confirm below the bank's agreement that, for purposes of calculating "EBIT", as defined in the Credit Agreement, the Charge shall be excluded from the determination of net income. Very truly yours, OLIN CORPORATION By _________________________________ Vice President and Treasurer Confirmed: CREDIT SUISSE By _________________________________ Name: Title: EXHIBIT 4(G) December 15, 1993 Morgan Guaranty Trust Company of New York 60 Wall Street New York, NY 10260- 0060 Ladies/Gentlemen: We refer to the Credit Agreement, dated as of September 30, 1993 ("Credit Agreement"), among Olin Corporation ("Olin"), Bank of Boston Connecticut, Chemical Bank, Citibank, N.A., Credit Suisse, Morgan Guaranty Trust Company of New York, The Boatmen's National Bank of St. Louis and The Chase Manhattan Bank, N.A. We refer also to the charge in the amount of $131.8 million after taxes (the "Charge"), relating to (a) personnel reductions, (b) business restructurings, (c) environmental exposures, (d) closed sites, and (e) long term disability (SFAS 112) and miscellaneous asset write-offs proposed to be taken by Olin in the fourth quarter of 1993. Kindly confirm below the bank's agreement that, for purposes of calculating "EBIT", as defined in the Credit Agreement, the Charge shall be excluded from the determination of net income. Very truly yours, OLIN CORPORATION By _________________________________ Vice President and Treasurer Confirmed: MORGAN GUARANTY TRUST COMPANY OF NEW YORK By _________________________________ Name: Title: EXHIBIT 4(G) December 15, 1993 The Boatmen's National Bank of St. Louis 800 Market Street St. Louis, MO 63101 Ladies/Gentlemen: We refer to the Credit Agreement, dated as of September 30, 1993 ("Credit Agreement"), among Olin Corporation ("Olin"), Bank of Boston Connecticut, Chemical Bank, Citibank, N.A., Credit Suisse, Morgan Guaranty Trust Company of New York, The Boatmen's National Bank of St. Louis and The Chase Manhattan Bank, N.A. We refer also to the charge in the amount of $131.8 million after taxes (the "Charge"), relating to (a) personnel reductions, (b) business restructurings, (c) environmental exposures, (d) closed sites, and (e) long term disability (SFAS 112) and miscellaneous asset write-offs proposed to be taken by Olin in the fourth quarter of 1993. Kindly confirm below the bank's agreement that, for purposes of calculating "EBIT", as defined in the Credit Agreement, the Charge shall be excluded from the determination of net income. Very truly yours, OLIN CORPORATION By _________________________________ Vice President and Treasurer Confirmed: THE BOATMEN'S NATIONAL BANK OF ST. LOUIS By _________________________________ Name: Title: EXHIBIT 4(G) December 15, 1993 The Chase Manhattan Bank, N.A. One Chase Plaza New York, NY 10081 Ladies/Gentlemen: We refer to the Credit Agreement, dated as of September 30, 1993 ("Credit Agreement"), among Olin Corporation ("Olin"), Bank of Boston Connecticut, Chemical Bank, Citibank, N.A., Credit Suisse, Morgan Guaranty Trust Company of New York, The Boatmen's National Bank of St. Louis and The Chase Manhattan Bank, N.A. We refer also to the charge in the amount of $131.8 million after taxes (the "Charge"), relating to (a) personnel reductions, (b) business restructurings, (c) environmental exposures, (d) closed sites, and (e) long term disability (SFAS 112) and miscellaneous asset write-offs proposed to be taken by Olin in the fourth quarter of 1993. Kindly confirm below the bank's agreement that, for purposes of calculating "EBIT", as defined in the Credit Agreement, the Charge shall be excluded from the determination of net income. Very truly yours, OLIN CORPORATION By _________________________________ Vice President and Treasurer Confirmed: THE CHASE MANHATTAN BANK, N.A. By _________________________________ Name: Title: