[GRAPHIC OMITTED] UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460 JUN 22 1998 Mirenco Inc. OFFICE OF Mr. Dwayne Fosseen AIR AND RADIATION President P.O. Box 343 (206 May Street) Radcliffe, IA 50230 Dear MR. FOSSEEN: Pursuant to your June 17, 1998 notification, the following fuel additive has been registered per 40 CFR 79.23 (our internal identification number precedes the name): 1761-0001 HYDROFIRE Fluid Note that per 40 CFR 79.21(f) you would be required to notify us in writing if certain information in your notification were to change. In addition, note, that with your notification, you have provided assurances that you will not represent, directly or indirectly, in any notice, circular, letter, or other written communication, or any written, oral, or pictoral notice or other announcement in any publication or by radio or television, that registration of this additive constitutes endorsement, certification, or approval by any agency of the United States. Please call (202) 564-9836 if you have any questions. Sincerely /s/ Deborah K Wood ------------------ Deborah K. Wood Acting Director Fuels and Energy Division