A summary of information is presented for all U.S. nuclear tests detonated below the Earth's surface. The data include explosion times, locations, yields, and depths of burial, as well as geophysical information about working-point media, and, for the underground explosions, data about surface collapse (subsidence) phenomena. This summary is intended to furnish available and up-to-date data useful for studies of seismic and hydroacoustic sources, as well as for studies of the seismic and hydroacoustic transmission characteristics of the Earth.

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