United States' Nuclear Tests

There were 1,032 American nuclear tests from 1945 through 1990. Included in this total are the two atomic bombs used on Hiroshima and Nagasaki. Most of the tests took place at the Nevada Test Site (NNSS/NTS) and the Pacific Proving Grounds in the Marshall Islands and off Kiritimati Island in the Pacific, plus three in the Atlantic Ocean. Ten other tests took place at various locations in the United States, including Alaska, Nevada other than the NNSS/NTS, Colorado, Mississippi, and New Mexico.

Series Years Tests Yield range (kilotons) Total yield (kilotons)
Trinity 1945 1 21 21
World War II 1945 2 18-21 38
Crossroads 1946 2 21 42
Sandstone 1948 3 18 to 49 104
Ranger 1951 5 1 to 22 40
Greenhouse 1951 4 46 to 225 398
Buster-Jangle 1951 7 small to 31 72
Tumbler-Snapper 1952 8 1 to 31 104
Ivy 1952 2 500 to 10,400 10,900
Upshot-Knothole 1953 11 small to 61 252
Castle 1954 6 110 to 15,000 48,200
Teapot 1955 14 1 to 43 167
Wigwam 1955 1 30 30
Project 56 1955–56 4 0 to 0 0
Redwing 1956 17 small to 5,000 20,820
Project 57 1957 1 0 0
Plumbbob 1957 29 0 to 74 345
Project 58 + 58A 1957 4 small to 1 1
Hardtack I 1958 35 0 to 9,300 35,628
Argus 1958 3 2 4
Hardtack II 1958 37 0 to 22 46
Nougat 1961–62 44 small to 67 357
Sunbeam 1962 4 small to 2 2
Dominic 1962–63 31 2 to 8,300 34,640
Fishbowl 1962 9 400 to 1,400 2,205
Storax 1962–63 47 1 to 115 585
Roller Coaster 1963 4 0 0
Niblick 1963–64 41 small to 249 698
Whetstone 1964–65 46 small to 51 476
Flintlock 1965–66 47 small to 365 1,891
Latchkey 1966–67 38 small to 870 1,831
Crosstie 1967–68 48 small to 1,300 3,638
Bowline 1968–69 47 small to 1,150 2,152
Mandrel 1969–70 52 small to 1,90 5,528
Emery 1970–71 16 small to 220 565
Grommet 1971–72 34 small to 4,800 5,200
Toggle 1972–73 28 small to 250 958
Arbor 1973–74 18 small to 150 274
Bedrock 1974–75 27 small to 750 2,840
Anvil 1975–76 21 0 to 1,000 5,993
Fulcrum 1976–77 21 small to 140 635
Cresset 1977–78 22 0 to 150 1,122
Quicksilver 1978–79 16 1 to 140 717
Tinderbox 1979–80 14 1 to 140 452
Guardian 1980–81 14 1 to 140 322
Praetorian 1981–82 19 1 to 140 938
Phalanx 1982–83 18 1 to 143 365
Fusileer 1983–84 16 small to 150 521
Grenadier 1984–85 16 3 to 150 670
Charioteer 1985–86 16 small to 140 549
Musketeer 1986–87 14 3 to 150 970
Touchstone 1987–88 13 2 to 150 696
Cornerstone 1988–89 11 1 to 150 436
Aqueduct 1989–90 10 small to 150 426
Sculpin 1990–91 7 2 to 140 478
Julin 1991–92 7 small to 100 172
Totals 1,032 196,552

Note: This list also includes 27 Peaceful nuclear explosions (PNEs).