For over 85 years, Butterworth has engineered and manufactured automated tank cleaning devices for all types of tanks and process vessels in a variety of industries with one goal in mind, remove workers from the inside of the tank. Today, we sell, rent and lease machines and complete systems for any application in vessels from 5 gallons up to 10,000,000 gallons. Butterworth will be exhibiting at: FEW in Indianapolis - June, NAVALSHORE in Rio, Brazil - August, MBAA National Convention in Minneapolis - October, Workboat in New Orleans - December. Come out and see us. We will aplso be making presentations at the MBAA National Convention in Minneapolis this October and the MBAA District St. Louis meeting in November.