sentences:  Spaatz climbed on a platform below the open hatch, and wearing rain gear and goggles for protection against fuel spills, grounded the hose and then placed it in a receptacle mounted in the upper fuselage.Made from a bucket with a sloped floor, the receptacle had connections to the two extra fuel tanks, and at Spaatz's signal Solter opened the valve.Fuel flowed by gravity into the bucket at per minute and then into the tanks, where it was then pumped by hand into the wing tanks by Hooe.