26 Aug 1980
Do not move or tilt this bomb, because the mechanism controlling the detonators in it will set it off at a movement of less than .01 of the open end Ricter scale.
Do not try to take it apart. The flathead screws are also attached to triggers and as much as ¼ to ¾ of a turn will cause an explosion. … This bomb is so sensitive that the slightes...”
— Note included with the bomb planted at Harvey's