The Hydroblaster position involves directing blasts of abrasive-laden compressed air or water from a nozzle against metal or hard composite objects to remove adhering scale, sand, paint, grease, tar, rust, and dirt, and to impart an even finish. reaching in all directions; handling and manipulating objects and materials; coordinating the movements of eyes, hands and fingers to operate tools and equipment; lifting 30 to 50 pounds from ground level, waist level, and/or overhead; carrying objects, tools, equipment, etc.