 The same report also projects the effects of one or more present-day high altitude nuclear explosions upon the formation of artificial radiation belts and the probable resulting effects on satellites that were in orbit as of the year 2010.On July 25, 1962, a second attempt was made to launch the "Bluegill" device, but ended in disaster when the Thor suffered a stuck valve preventing the flow of LOX to the combustion chamber.The engine lost thrust and unburned RP-1 spilled down into the hot thrust chamber, igniting and starting a fire around the base of the missile.