On November 27, 1962, a low-yield thermonuclear device was fired underground at the Atomic Energy Commission's Nevada Test Site in the Anacostia event. This experiment was part of the AEC Project Plowshare - a program to explore the scientific and industrial uses of nuclear explosives. Radiochemical analysis of the debris established the fact that elements at least through mass number A = 246 were formed. The plot of abundance versus mass number can be fitted assuming a single flux region of about 3 × 1024 neutrons/cm2.