NUCLEAR TEST DETONATIONS OFFICIALLY ANNOUNCED
BY THE UNITED STATES, THE UNITED KINGDOM, AND THE USRR
Compiled through April 16, “1957
U. S. Detonations
Number Cumulative
Trinity, New Mexico, July 16, 1945
Crossroads, Bikini Atoll, July 1946
Sandstone, Eniwetok Proving Ground, April 1948
Ranger, Nevada Test Site, January & February, 1951
Greenhouse, EPG, April & May, 1951
Buster-Jangle, NTS, October & November, 1951
Tumbler-Snapper, NTS, April, May & June, 1952
Ivy, EPG, November 1952
Upshot-Knothole, NTS, March, April, May & June, 1953
Castle, EPG, March, April & May, 1954
Teapot, NTS, February, March, April & May, 1955
Wigwam, Pacific Ocean, May 1955
Redwing, EPG, May, June & July, 1956
1
2
3
5
4
7
1
3
6
i
15
22
8
30
2
32
3
14
1
3
46
60
61
64
11
43
USSR_Detonations
(As announced by the U. S. Government and/or the USSR)
1949:
1951:
1953:
September 23,
October 3, October 22,
August 12 (thermonuclear), August 23 (part of series).
1954:
1955:
October 26 (part of series).
Aug. 4, Sept. 24 (part of series), Nov. 10 (part of series),
1956:
March 21, April 2 (part of series), Aug. 24 (part of series),
Aug. 30 (part of series), Sept. 2 (part of series), Sept. 10
Nov. 23 ("largest thus far... in megaton range").
(announced by USSR), Nov. 17 (announced same day by U. S. and
1957:
USSR).
Jan. 20 (part of series), March &, April 3 (part of series),
April 6, April 10 (part of series), April 12 (part of series),
April 16.
United Kingdom
October 3 (Montebello Islands).
October 15, October 26 (both at Woomera).
May 16, June 19 (both at Montebello Islands), Sept. 27, Oct. 4,
Oct. 11, Oct. 22 (last four shots, all at Maralinga, constitute
x
;
fpr,
Cr
Ly
ois
a
QE
3
WIN
fourth British series).
~
1952:
1953:
1956: