SEDAN, which are discussed in section 4.21. December 1961 and SEDAN on 6 July 1962. GNOME was conducted on 10 A number of DOD participants in these two events also took part in DOMINIC II. In many cases, their recorded doses were cumulative, covering their participation in both DOMINIC II and the PLOWSHARE events. For this reason, the combined totals are provided for DOMINIC II, GNOME, and SEDAN, as is shown below: Summary of External Doses for Operation DOMINIC II and for GNOME and SEDAN of the PLOWSHARE Program as of 1 May 1986 Gamma Dose (rem) 0-0.5 0.5-1 1-3 3-5 Army 1,184 163 101 Navy 61 19 235 Marine Corps Civilian DOD Participants Air Force 5-10 10+ 2 0 0 32 0 1 0 28 14 1 0 . 37 8 16 1 8) 0 638 21 10 0 0 0 | 4.21 PLOWSHARE PROGRAM. Conducted from 1961 to 1973, the PLOWSHARE Program consisted of 27 nuclear detonations, four of which occurred before the signing of the 1963 limited test ban treaty. The detonations, all of which had yields of no more than 200 kilotons, were staged at the NTS and other sites in Colorado and New Mexico. The tests were all subsurface, being either shaft or cratering shots (25: 1). As indicated by the following table, this section discusses only Projects GNOME and SEDAN, the first two PLOWSHARE events. These two shots were selected for consideration because they were conducted during the period of U.S. atmospheric testing and they had documented, although limited, DOD participation. In addition, the extant sources were sufficient in number and detail to enable a summation of the events (25: 1). 137