  We recall the early theoretical speculations on the possible explosive uses
of antimatter, from 1946 to the first production of antiprotons, at Berkeley in
1955, and until the first capture of cold antiprotons, at CERN on July 17-18,
1986, as well as the circumstances of the first presentation at a scientific
conference of the correct physical processes leading to the ignition of a large
scale thermonuclear explosion using less than a few micrograms of antimatter as
trigger, at Madrid on June 30th - July 4th, 1986.
