This paper lists in chronological order all the nuclear detonations which have been announced by the six countries which have conducted nuclear detonations. The numbers of such detonations and the cumulative yield are underestimates for reasons presented and discussed. In a 30-yr span, beginning on 16 July 1945, and ending on 30 June 1975, some 801 nuclear detonations have been announced with a cumulative yield of about 325 Mt. Statistics for nuclear detonations are tabulated in a useful format and figures. International treaties and agreements which affected and continue to affect nuclear testing are discussed in relation to their effects.