Since long distance blast pressure propagation is strongly dependent on wind profile structure, calculations are made for many directions and distances from the test site where possible window damages may occur, At times it was necessary to recommend a shot delay to await a wind change which would cut blast pressures to non-damaging levels. In other to improve blast calculation techniques, a network of especially sensitive microbarographs is operated at as many as 17 off-site locations to record actual shot-produced pressures in Nevada, California, and Utah. Full monitoring coverage was provided off-site by the U. S. Public Health Service under contract with the U. S. Atomic Energy Commission. There were and are extensive monitoring programs, in- cluding mobile monitoring teams, film badges, air samplers, automatic gamma recorders, collections of milk, vegetation, soil, etc. complete description of these programs are given below. A more All of the key data obtained from these monitoring programs were and are reported in the open literature such as the Atomic Energy Commission's Semi- annual (now annual) Reports to Congress and the U. S. Public Health Service's monthly publication, Radiological Health Data, 47.