Exibit 99.1 August 6, 2002 Via EDGAR Securities and Exchange Commission Judiciary Plaza 450 Fifth Street, N.W. Washington D.C. RE: Graham Corporation For the Quarterly Period ending June 30, 2002 Ladies and Gentlemen: Transmitted herewith are written statements pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 to accompany the above-captioned periodic report. Very truly yours, Graham Corporation By: /s/ William A. Smith, Jr. ---------------------------------- William A. Smith, Jr. Vice President and General Counsel