DOE/NV--209-REV 16

September 2015

United States Nuclear Tests

July 1945 through September 1992

 

 U.S. Department of Energy,

 National Nuclear Security Administration Nevada Field Office
This publication supersedes DOE/NV--209, Rev. 15, dated December 2000.

This publication has been reproduced directly from the best available copy.

Available for sale to the public from:

U.S. Department of Commerce

National Technical Information Service

5301 Shawnee Road

Alexandria, VA 22312

Telephone: 800.553.6847

Fax: 703.605.6900

E-mail: orders@ntis.gov

Online Ordering: http://www.ntis.gov/help/ordermethods.aspx

Available electronically at http://www.osti.gov/scitech

Available for a processing fee to U.S. Department of Energy and its contractors, 

in paper, from:

U.S. Department of Energy

Office of Scientific and Technical Information

P.O. Box 62

Oak Ridge, TN 37831-0062

Phone: 865.576.8401

Fax: 865.576.5728

Email: reports@adonis.osti.gov

Reference herein to any specific commercial product, process, or service by 

trade name, trademark, manufacturer, or otherwise, does not necessarily 

constitute or imply its endorsement, recommendation, or favoring by the United 

States Government or any agency thereof or its contractors or subcontractors.

Front cover photos

Top: Baker was the third nuclear test conducted by the United States at Bikini Atoll on July 24, 1946. Baker was 

detonated underwater using a Mark 3 device similar to “Fat Man” with a yield of 21 kilotons. Visible in the spout 

are ships subjected to the effects of the underwater detonation.

Bottom left: Grable was the 42nd nuclear test conducted by the United States at the Nevada National Security Site 

on May 25, 1953. Grable was an airburst detonation fired from a 280 millimeter gun using a Mark 9 projectile, 

with a yield of 15 kilotons.

Bottom right: An aerial view of snow-covered Yucca Flat on the Nevada National Security Site. Visible are 

numerous subsidence craters that sometimes form when a collapse of the cavity created by an underground nuclear 

detonation continues all the way to the surface (more than 50 percent of the time).

Printed on 

recycled paper
DOE/NV--209-REV 16

United States Nuclear Tests

July 1945 through September 1992

Date Published - September 2015

Prepared by the

U.S. Department of Energy,

National Nuclear Security Administration Nevada Field Office

Las Vegas, Nevada
iii

Table of Contents

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Caveat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Revision 16 Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Detonation Times and Dates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Moratorium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Purposes of U.S. Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Radiological Effluents Released from Nuclear Detonations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Seismic Source Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x

Treaties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Types and Purposes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x

Yields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Notes on Research . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Figures

Figure 1: U.S. Nuclear Test Locations – NNSS and Other. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

Figure 2: U.S. Nuclear Test Locations – Bikini Atoll. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Figure 3: U.S. Nuclear Test Locations – Enewetak Atoll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

Figure 4: U.S. Nuclear Test Locations – Areas on the NNSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Tables

Table 1 - U.S. Nuclear Tests – Total – By Calendar Year. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Table 2 - U.S. Nuclear Tests – Total – By Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

Table 3 - U.S. Nuclear Tests – Total – By Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv

Table 4 - U.S. Nuclear Tests/Detonations – Total – By Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Table 5 - U.S. Nuclear Detonations – Total – By Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xx

Table 6 - United States Nuclear Tests/Detonations Conducted on the NNSS – By Area. . . . . . . . . . . . . . . . . . . . . . . xxii

U.S. Nuclear Tests – By Date

Operation Crossroads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation Sandstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation Ranger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation Greenhouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation Buster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation Jangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation Tumbler-Snapper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation Ivy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operation Upshot-Knothole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
iv

Operation Castle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operation Teapot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operation Wigwam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation Project 56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation Redwing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation Plumbbob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Operation Project 58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operation Project 58A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operation Hardtack I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operation Newsreel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operation Argus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Operation Hardtack II. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Operation Nougat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Operation Dominic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Operation Storax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Operation Sunbeam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Operation Fishbowl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Operation Roller Coaster. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Operation Niblick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Operation Whetstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Operation Flintlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Operation Latchkey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Operation Crosstie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Operation Bowline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Operation Mandrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Operation Emery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Operation Grommet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Operation Toggle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Operation Arbor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Operation Bedrock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Operation Anvil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Operation Fulcrum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Operation Cresset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Operation Quicksilver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Operation Tinderbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Operation Guardian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Operation Praetorian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Operation Phalanx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
v

Operation Fusileer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Operation Grenadier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Operation Charioteer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Operation Musketeer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Operation Touchstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Operation Cornerstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Operation Aqueduct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Operation Sculpin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Operation Julin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

U.S. Nuclear Detonations – By Name

A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

P. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

X. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Y. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Z. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
vi

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Abbreviations and Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Index of Nuclear Test Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
vii

Introduction

This document lists chronologically and alphabetically by 

test name all nuclear detonations, regardless of nuclear 

yield (save those used in combat), conducted by the 

United States from July 1945 through September 1992.

Two nuclear weapons that the United States exploded 

over Japan ending World War II are not listed. These 

detonations were not “tests” in the sense that they were 

conducted to prove that the weapon would work as 

designed (as was the first test near Alamogordo, New 

Mexico, on July 16, 1945), or to advance nuclear weapon 

design, or to determine weapons effects, or to verify 

weapon safety, as were the more than 1,000 tests that 

have taken place since June 30, 1946.

The nuclear weapon (nicknamed “Little Boy”) dropped 

August 6, 1945, from a U.S. Army Air Forces B-29 

bomber (the Enola Gay) and detonated over Hiroshima, 

Japan, had an energy-yield equivalent to that of 15,000

tons of TNT. The nuclear weapon (nicknamed “Fat Man” 

and similar to the “Trinity” device) exploded on August 9, 

1945, over Nagasaki, Japan, had an energy-yield 

equivalent to that of 21,000 tons of TNT. Both 

detonations were intended to end World War II as quickly 

as possible.

Data on U.S. tests were obtained from, and verified by, 

the U.S. Department of Energy's (DOE) three weapons 

laboratories—Los Alamos National Laboratory (LANL), 

Los Alamos, New Mexico; Lawrence Livermore National 

Laboratory (LLNL), Livermore, California; and Sandia 

National Laboratories (SNL), Albuquerque, New 

Mexico—and the Defense Threat Reduction Agency

(DTRA). Additionally, data were obtained from public 

announcements issued by the Atomic Energy 

Commission (AEC) and its successors: the Energy 

Research and Development Administration (ERDA), and 

DOE, respectively.

Caveat

The information contained in this document was gleaned 

from multiple sources over time. Some of the data have

been updated to reflect the most recent analyses 

conducted by the national weapons laboratories. When 

discrepancies were encountered, every attempt was 

made to use the most acceptable or verifiable 

information. In some instances, multiple spellings of test 

names were encountered, and the most commonly used 

name is included in this document (e.g., Johnnie Boy 

versus Johnie Boy). Once a “test” has been categorized 

as such, no attempt has been made to change its 

categorization based on the current definition of a “test” 

found in the 1990 Protocols to the 1974 Treaty on the 

Limitation of Underground Nuclear Weapons Tests 

(also known as the Threshold Test Ban Treaty) and the 

1976 Treaty on Underground Nuclear Explosions for 

Peaceful Purposes (also known as the Peaceful Nuclear 

Explosions Treaty). For example, Huron Landing and 

Diamond Ace were conducted simultaneously on 

September 23, 1982, and were announced as individual 

tests. Based on the current definition of a “test,” they 

would be considered as “one test with two simultaneous 

detonations.”

Revision 16 Changes

Numerous changes have occurred since issuance of 

Revision 15 in December 2000, and a number of 

discrepancies were also discovered in the document. 

The Nevada Test Site was renamed the Nevada National 

Security Site (NNSS), and the Nellis Air Force Range is 

now the Nevada Test and Training Range (NTTR). 

Some reported parameters (e.g., latitude, longitude, and 

elevations) were found to be inaccurate, and there were

requests to revise these elements. There was limited 

height of burst information in Revision 15 for the 

atmospheric nuclear tests, and this and other 

unclassified information was added. To make NV-209 an 

even more comprehensive reference document for 

U.S. nuclear tests, the following modifications 

were incorporated:

• Location coordinates were added to include all tests 

and were updated for accuracy.

• Height of burst or depth of burial were added 

for all detonations. (Height and depth values are 

from surface elevation to the working point 

of detonations.)

• Text paragraphs in the Introduction were expanded 

to cover additional related subjects (e.g., Plowshare 

tests in the Treaties section).

• Explanations for how some new or revised values 

were determined have been included.

• Inconsistences (e.g., hole number designations, 

sponsor) and editorial errors were corrected.

• Figures and tables were revised for both 

comprehensiveness and editorial enhancements.

• A test reference column was added to the 

Detonations - By Name alphabetical listing 

(back section) to correlate between the Tests - By 

Date sequential tests/detonations listing 

(front section).

• A symbol () was added to depict underground 

detonations that resulted in a surface subsidence 

crater.

• Definitions for specific topics were added.

• Radionuclide release information was clarified 

and made consistent with the primary reference 
viii

document on the subject (DOE, Nevada Operations

Office [DOE/NV] publication Radiological Effluents

Released from U.S. Continental Tests 1961 through 

1992, DOE/NV-317).

• Information that was declassified subsequent to 

Revision 15 was added where relevant.

• Interesting facts were added to specific 

detonations as notes in the front sequential list of 

tests/detonations.

Detonation Times and Dates

Detonation time and date for all detonations listed in this 

document were converted from local time to Greenwich 

Mean Time (GMT). The date listed is the GMT date for 

the detonation. Times are given in the hundredth of a 

second where available; otherwise, a default value of 

0.00 seconds is used.

Locations

The first test of a nuclear weapon was in the atmosphere 

on July 16, 1945, in a remote part of New Mexico on what 

was then the Alamogordo Bombing Range, now the 

White Sands Missile Range. The site is 55 miles 

northwest of Alamogordo, New Mexico.

The word “site” is defined as “the land area withdrawn for 

U.S. government testing purposes (e.g., NNSS, NTTR, 

Project Shoal) or the area secured to ensure no 

inadvertent public intrusion (e.g., Amchitka Island and 

Rulison test vicinity).” Almost all nuclear tests were 

conducted within an area withdrawn from public domain; 

however, this is not true for the Amchitka and Rulison 

underground nuclear tests, where no formal land 

withdrawal was recorded.

At various times between June 1946 and November 

1962, atmospheric and underwater tests were conducted 

by the United States in the Marshall Islands (Bikini and 

Enewetak Atolls), Christmas Island, Johnston Atoll in the 

Pacific Ocean, and over the South Atlantic Ocean.

Between January 1951 and July 1962, atmospheric and 

underground nuclear tests were conducted at the NNSS.

Since June 1963, all nuclear tests conducted in the 

United States have been underground, and most of them 

have been at the NNSS. Some tests were conducted on 

the NTTR; in central and northwestern Nevada; in 

Colorado, New Mexico, and Mississippi; and on 

Amchitka, one of the Aleutian Islands off the 

Alaska coast.

Latitude and longitude locations are the surface ground 

zero location of the drill hole or other emplacement 

location. Historical continental U.S. detonation 

coordinates were surveyed in the respective State Plane 

Coordinate systems using the North American Datum of 

1927 and are precise to within 1 foot (ft). The coordinates 

were mathematically converted to the North American 

Datum of 1984 reference model to be more consistent 

with modern surveying standards involving Global 

Positioning Systems (GPS). However, these conversions 

have known limitations; see http://www.ngs.noaa.gov/

TOOLS/Nadcon/Nadcon.shtml.

All coordinates are presented in decimal degrees to six 

decimal places, indicating accuracies of better than 1 ft. 

Accuracy validation was not conducted on each 

individual detonation coordinate.

The following assumptions were made regarding 

horizontal GPS coordinates:

• Underground (tunnel and borehole) detonations on 

the NNSS are assumed to be accurate to 1–2 ft.

• Stationary (towers and surface platforms) 

atmospheric detonations on the NNSS and at other 

locations within the United States were assumed to 

be accurate to within 5 ft.

• Atmospheric detonations conducted from dynamic 

platforms within the United States (e.g., dropped 

from airplanes, suspended from balloons) are 

assumed to be accurate to within 10 ft. 

• Detonations conducted at low elevations in the 

Pacific are assumed to be accurate to within 100 ft.

The following assumptions were made regarding surface 

elevation data (above sea level):

• Atmospheric detonations conducted on static 

platforms are assumed to be accurate to within 5 ft.

• Underground detonations are assumed to be 

accurate to within 1 ft.

• Barge and underwater detonations are assumed to 

be accurate to within 5 ft.

• Detonations conducted above or below the ocean 

surface were assigned a surface elevation of 

zero (0). 

The following assumptions were made regarding height 

of burst, depth of burial, or depth underwater:

• Underground, underwater, and stationary 

atmospheric detonations are assumed to be 

accurate to within 5 ft.

• The distinction between surface and tower tests was 

set at 10 ft above the ground surface

(see Glossary).

• For atmospheric tests conducted on dynamic 

platforms, the height of burst (when given) is 

assumed to be accurate to within 100 ft.
ix

Moratorium

On October 31, 1958, the United States entered into a 

unilateral testing moratorium announced by President 

Dwight D. Eisenhower with the understanding that the 

Soviet Union also would refrain from conducting tests. 

The Soviet Union resumed testing in September 1961 

with a series of the largest number of tests 

ever conducted.

On September 15, 1961, the United States resumed 

testing at the NNSS on a year-round basis.

On October 2, 1992, the United States entered into 

another unilateral moratorium on nuclear weapons 

testing announced by President George H.W. Bush. 

President Bill Clinton extended this moratorium in July 

1993, and again in March 1994 until September 1995.

On August 11, 1995, President Clinton announced the 

decision to negotiate a comprehensive nuclear test ban 

treaty while continuing the cessation of nuclear testing by 

the United States. 

On September 24, 1996, President Clinton signed the 

Comprehensive Nuclear Test Ban Treaty, which prohibits 

“any nuclear weapons test explosion” by any State Party.

This treaty has not been ratified by Congress and is 

therefore not legally binding. (See Treaties.)

Purposes of U.S. Tests

Past tests have been described as being for one of 

six purposes: Joint US-UK, Plowshare, Safety 

Experiment, Vela Uniform, Weapons Effects, and 

Weapons Related. Revision 15 contained an additional 

purpose: Storage-Transportation. However, this was 

removed, as these tests were also Joint US-UK.

With the declassification of all previous simultaneous 

detonations, purpose is now attributed to each 

detonation. Weapons-related tests were conducted to 

gather data on nuclear devices; weapons-effects tests 

were conducted, usually by the U.S. Department of 

Defense (DoD), to determine the effects of nuclear 

detonations on military offensive and defensive systems; 

and tests conducted for the United Kingdom (UK) are 

shown as “Joint US-UK.” Individual tests/detonations 

could have different or multiple purposes. The purpose 

listed is considered the primary.

Radiological Effluents Released from Nuclear 

Detonations

Unless otherwise noted, all nuclear tests at the NNSS or 

NTTR before September 15, 1961, produced 

radioactivity detected offsite. (See Glossary for definition 

of “offsite.”) All tests before this date precede the testing 

moratorium that began October 31, 1958.

Unless otherwise noted, no test at the NNSS or NTTR on 

or after September 15, 1961, had a release of 

radioactivity that was detected offsite. The release of 

radioactivity from a test can occur

• accidentally as a result of a containment failure, 

• accidentally or deliberately as a result of post-test 

operations (e.g., drillback, gas sampling, 

cementback), or

• deliberately as a result of post-test controlled 

purging of gases generally from a tunnel.

All releases resulting from a containment failure, even if 

not detected offsite, are reported. Radiation releases 

resulting from tunnel purging or normal operations are 

reported in this document regardless whether they were 

detected offsite or onsite only. These releases are listed 

in the DOE/NV publication Radiological Effluents 

Released from U.S. Continental Tests 1961 through 

1992, DOE/NV-317.

Seismic Source Data

Detonation times and locations (latitude, longitude, and 

surface elevation) are included and are intended for use 

in the calibration of seismic stations that are part of the 

International Monitoring System called for in the 1996 

Comprehensive Nuclear Test Ban Treaty.

Detonation time and location of past underground 

nuclear detonations are ideal quantities for calibrating a 

seismic network for accurate location of a new source. 

This ground truth information can be used, for example, 

to refine seismic velocity models and to determine station 

corrections for parts of North America.

Those detonations that could be especially valuable for 

International Monitoring System calibration are identified 

with boldface type. Included in this subgroup are 8 

detonations that took place somewhere other than the 

NNSS and 14 that occurred at the NNSS. These 14 were 

selected because they

• occurred within the last 5 years of testing, therefore 

increasing the chance that the detonations were 

recorded on modern seismograph systems;

• are well distributed about the NNSS to include at 

least two from each of the major test regions 

(e.g., Pahute Mesa, Rainier Mesa, and Yucca Flat);

• are relatively large, allowing recording on multiple 

instruments; or

• were the subject of special study.

The seismic source data for underground nuclear 

detonations was gathered from all available official 

sources, including reports by DOE, its predecessors and 

contractors, and the Defense Nuclear Agency (DNA). All 
x

reasonable effort has been expended to ensure the 

greatest possible accuracy of this seismic data.

Time calibrations are obtained from the National Institute 

of Standards and Technology WWV radio stations. Tests 

were typically planned to be detonated on the exact hour, 

minute, or second. However, the firing systems always 

introduce some delay so that the actual detonation time 

could be as much as 150 milliseconds later than 

intended. When information on this delay is available, 

detonation times are given to the nearest 0.01 second, 

uncorrected for WWV propagation; otherwise, a default 

value of 0.00 is given.

Series

Each series of tests is given a name, such as Operation 

Crossroads. U.S. nuclear tests were conducted on an 

intermittent basis from June 1946 to October 1958.

On September 15, 1961, when the United States 

resumed testing at the NNSS on a year-round basis with 

Operation Nougat, tests were grouped for fiscal and 

reporting purposes according to the fiscal year in which 

they took place. For example, fiscal year 1963 tests—

which began July 1, 1962, and extended through June 

30, 1963—were in the Operation Storax series.

Between April and November 1962, the United States 

conducted Operation Dominic, which included the DoD 

Operation Fishbowl high-altitude tests in the Pacific. The

DoD also conducted four weapons-effects tests at the 

NNSS in July 1962 as Operation Sunbeam.

In 1976, the federal government changed the fiscal year 

to begin on October 1 and end on September 30. 

Accordingly, the fiscal year 1976 series (Operation Anvil) 

did not end on June 30 but was extended through 

September 30, 1976—a period of 15 months.

Treaties

On August 5, 1963, the United States and the Soviet 

Union signed the Limited Test Ban Treaty, which 

effectively banned testing of nuclear weapons in the 

atmosphere, oceans, and space. This treaty entered into 

force on October 10, 1963.

On July 1, 1968, the United States, the Soviet Union, and 

60 other countries signed the Treaty on the NonProliferation of Nuclear Weapons (also known as the 

Nuclear Nonproliferation Treaty). This treaty entered into 

force on March 5, 1970, and represents the only binding 

commitment in a multilateral treaty to the goal of 

disarmament by the nuclear-weapon states.

On July 3, 1974, the United States and the Soviet Union 

signed the Threshold Test Ban Treaty, restricting all 

underground nuclear test explosions to yields no greater 

than 150 kilotons (kt). On May 28, 1976, the nations also 

signed the Peaceful Nuclear Explosions Treaty, which 

stemmed from Article III of the Threshold Test Ban Treaty 

and restricts individual peaceful nuclear explosions to 

yields no greater than 150 kt. These treaties entered into 

force on December 11, 1990.

Discussion on peaceful uses for nuclear explosions 

began in the mid-1950s and culminated in a formal 

Plowshare Program under the Division of Military 

Application in June 1957. This program was publicly 

announced on June 6, 1958. No Plowshare nuclear 

detonations took place until December 10, 1961,

(Gnome) due to a moratorium on nuclear testing; 

however, many plans and experiments using non-nuclear 

detonations were conducted during the period. From late 

1961 through mid-1973, the United States conducted 27 

Plowshare nuclear tests, including 36 individual nuclear 

device detonations. Additionally, there were several more 

tests listed as “weapons related” that were also related to 

Plowshare explosives. The Plowshare Program was 

discontinued at the end of 1975 due to economic and 

environmental concerns, 

The Joint Verification Experiment was conducted in 1988 

by the United States and the Soviet Union as a prelude to 

the signing of the 1990 Protocols to the Threshold Test 

Ban Treaty and the Peaceful Nuclear Explosion Treaty.

Proposed treaty verification techniques and 

measurements were employed on the Kearsarge test

conducted by the United States on August 17, 1988, at 

the NNSS; and on the Shagan test conducted by the 

Soviet Union on September 14, 1988, at the 

Semipalatinsk Test Site.

In May 1995, the United Nations reached consensus and 

indefinitely extended the Nuclear Nonproliferation Treaty. 

This action was a priority for the U.S. arms control 

agenda and critical to proceeding with a test ban treaty. 

On August 11, 1995, President Clinton announced the 

decision to negotiate a comprehensive nuclear test ban 

treaty while continuing the cessation of nuclear testing by 

the United States.

Even though President Clinton signed the 

Comprehensive Nuclear Test Ban Treaty on 

September 24, 1996, DOE has been directed to maintain 

an underground test readiness program in case it is in 

the “supreme national interest” to resume nuclear 

weapons testing.

Types and Purposes

The definition of terms used in this document appears in 

the Glossary. Type refers to the method of deployment of 

the nuclear device at time of detonation, such as tower, 

tunnel, or airdrop.
xi

Purpose indicates whether the test was part of the 

weapons development program, a DoD effects test, a 

Joint US-UK test, or was part of some special program 

that involved the use of nuclear devices. In the Summary, 

the sum of all tests conducted underground (tunnel, 

shaft, and crater) appears as Total Underground. With 

the exception of five underwater tests, the remaining 

tests appear as Total Atmospheric.

Yields

The nomenclature for test yields varied according to 

information policy governing specific years. In some 

cases, no yield information has been released; in a few 

cases, the terms “very slight” and “slight” were used 

without amplification. For completeness, even 

underground nuclear detonations with little or no nuclear 

yield have been included. Except for tests where specific 

yields or relative specific yields such as “about 2 kt,”

“several Mt,” or “less than 0.1 kt” were announced, test 

yields are given in these terms:

1945 through 1963

• Low (less than 20 kt)

• Intermediate (20 to 200 kt)

• Submegaton (less than 1 Mt, but more than 200 kt)

• Low Megaton (from 1 to several Mt)

• Megaton Range

1964 through February 1976

• Less than 20 kt

• 20 to 200 kt

• 200 to 1,000 kt

March 1976

During a series of high-yield tests conducted during this 

month, two ranges were added, and the 200 to 1,000 kt 

range was dropped.

• 200 to 500 kt

• 500 to 1,000 kt

Since March 1976

On March 31, 1976, the United States and the Soviet 

Union agreed to limit the maximum yield of underground 

tests to 150 kt.

• Less than 20 kt

• Less than 150 kt

• 20 to 150 kt

Joint Verification Experiment

Data exchanges provided for in the Protocol to the 1974 

Threshold Test Ban Treaty required the exchange of 

historic explosion data on five detonations with yields 

within the 100 to 150 kt range. Under the Joint 

Verification Experiment of 1988, this yield range was 

added. However, this yield range now applies only 

to Kearsarge; the other detonations now have 

specified yields.

• 100 to 150 kt

Notes on Research

When using NV-209 as a research tool, there are a few 

hints and tricks that can develop better results. When 

researching a particular test, using names of locations 

and institutions at the date of the test often results in 

more and better data. The reason for this is that many 

archives and library databases have not been updated 

with current affiliations. For example, searching for 

“LASL” instead of “LANL” will often give different results 

in computer searches.

Some key dates and institutions that are particularly 

important for use with NV-209 are as follows:

Test Areas

• Site Mercury

1950–1951

• Nevada Test Site (NTS)

1951–1952

• Nevada Proving Ground 

1952–1954

• NTS

1955–2010

• Nevada National Security Site (NNSS)

2010–present

Federal Agencies

• Atomic Energy Commission (AEC)

1946–1974

• Energy Research and Development Administration 

(ERDA) 1974–1977

• U.S. Department of Energy (DOE)

19772001

• DOE/National Nuclear Security Administration 

(NNSA) 2001–present
xii

Laboratories

• Los Alamos (Manhattan Engineering District)

1943–1947

• Los Alamos Scientific Laboratory (LASL)

1947–1980

• Los Alamos National Laboratory (LANL)

1980–present

• University of California Radiation Laboratory (RL)

1952–1958

• Lawrence Radiation Laboratory (LRL)

1958–1971

• Lawrence Livermore Laboratory (LLL)

1971–1980

• Lawrence Livermore National Laboratory (LLNL)

1980–present

DTRA is another agency that is not specifically cited in 

NV-209 but is very relevant to nuclear testing. It, too, has 

had numerous name changes over the years, and 

associating the date of the test with the correct agency 

name will often give better research results.

• Armed Forces Special Weapons Project (AFSWP) 

1947–1959

• Defense Atomic Support Agency (DASA)

1959–1971

• Defense Nuclear Agency (DNA)

1971–1996

• Defense Special Weapons Agency (DSWA)

1996–1998

• Defense Threat Reduction Agency (DTRA)

1998–present

One last hint to aid in research: Although the tests are 

listed by GMT, using local time will often assist in 

identifying details in associated photographs. Before 

1966, time information is even more confusing, as there 

was no standard on the use of Daylight Saving Time. 

Many of the early tests were conducted at sunrise; thus, 

an hour or two difference can make a substantial 

difference in ambient lighting when trying to identify 

unknown photographs.

xiii

Table 1 - U.S. Nuclear Tests — Total — By Calendar Year

Calendar Year US US-UK Calendar Year US US-UK

CY1945 1 0 CY1969 46 0

CY1946 2 0 CY1970 39 0

CY1947 0 0 CY1971 24 0

CY1948 3 0 CY1972 27 0

CY1949 0 0 CY1973 24 0

CY1950 0 0 CY1974 22 1

CY1951 16 0 CY1975 22 0

CY1952 10 0 CY1976 20 1

CY1953 11 0 CY1977 20 0

CY1954 6 0 CY1978 19 2

CY1955 18 0 CY1979 15 1

CY1956 18 0 CY1980 14 3

CY1957 32 0 CY1981 16 1

CY1958 77 0 CY1982 18 1

CY1959 0 0 CY1983 18 1

CY1960 0 0 CY1984 18 2

CY1961 10 0 CY1985 17 1

CY1962 96 2 CY1986 14 1

CY1963 43 4 CY1987 14 1

CY1964 45 2 CY1988 15 0

CY1965 38 1 CY1989 11 1

CY1966 48 0 CY1990 8 1

CY1967 42 0 CY1991 7 1

CY1968 56 0 CY1992 6 0

Total US Tests

Total US-UK

TOTAL TESTS

1,026

 28

1,054

NOTE: Totals do not include two combat uses of nuclear weapons, which are not considered “tests.”

The first combat detonation was a 15-kt weapon airdropped August 6, 1945, at Hiroshima, Japan.

The second was a 21-kt weapon airdropped August 9, 1945, at Nagasaki, Japan.
xiv

Table 2 - U.S. Nuclear Tests — Total — By Type

Type US US-UK

Airburst 1 0

Airdrop 52 0

Balloon 25 0

Barge 36 0

Rocket 12 0

Surface 24 4

Tower 56 0

Total Atmospheric 206 4

Crater 9 0

Shaft 739 24

Tunnel 67 0

Total Underground 815 24

Total Underwater 5 0

TOTAL TESTS 1,026 28
xv

Table 3 - U.S. Nuclear Tests — Total — By Location

Location US US-UK

Total South Atlantic 3 0

Bikini Atoll 23 0

Christmas Island 24 0

Enewetak Atoll 43 0

Johnston Island 12 0

Pacific 4 0

Total Pacific 106 0

near Alamogordo, New Mexico 1 0

Amchitka Island, Alaska 3 0

near Carlsbad, New Mexico 1 0

Central Nevada 1 0

near Fallon, Nevada 1 0

near Farmington, New Mexico 1 0

near Parachute, Colorado 1 0

near Hattiesburg, Mississippi 2 0

Nevada Test and Training Range 1 4

near Meeker, Colorado 1 0

Total Other 13 4

Atmospheric 100 0

Underground 804 24

Total NNSS 904 24

TOTAL TESTS 1,026 28
xvi

Table 4 - U.S. Nuclear Tests/Detonations — Total — By Location

A test is defined in the Threshold Test Ban Treaty as either a single underground nuclear explosion (detonation) conducted 

at a test site, or two or more underground nuclear explosions (detonations) conducted within an area delineated by a circle 

having a diameter of 2 kilometers (1.24 miles) and conducted within a total period of time not to exceed 0.1 second. 

Sixty-three of the 1,054 nuclear tests conducted by the United States consisted of more than one underground nuclear 

explosion (detonation).

Nevada National Security Site - 62 tests had simultaneous detonations

Rifle, Colorado - 1 test had a simultaneous detonation

Location Number of 

Tests

Number of 

Detonations

Total South Atlantic 3 3

Bikini Atoll 23 23

Christmas Island 24 24

Enewetak Atoll 43 43

Johnston Island 12 12

Pacific 4 4

Total Pacific 106 106

near Alamogordo, New Mexico 1 1

Amchitka Island, Alaska 3 3

near Carlsbad, New Mexico 1 1

Central Nevada 1 1

near Fallon, Nevada 1 1

near Farmington, New Mexico 1 1

near Parachute, Colorado 1 1

near Hattiesburg, Mississippi 2 2

Nevada Test and Training Range 5 5

near Meeker, Colorado 1 3

Total Other 17 19

Atmospheric 100 100

Underground 828 921

Total NNSS 928 1,021

TOTAL 1,054 1,149
xvii

Figure 1. U.S. Nuclear Test Locations – NNSS and Other
xviii

Figure 2. U.S. Nuclear Test Locations – Bikini Atoll
xix

Figure 3. U.S. Nuclear Test Locations – Enewetak Atoll
xx

Table 5 - U.S. Nuclear Detonations — Total — By Purpose

Purpose Detonations

Joint US-UK 28*

Plowshare 36

Safety Experiment 88

Vela Uniform 7

Weapons Effects 100

Weapons Related 890

TOTAL DETONATIONS 1,149

* Four of the Joint US-UK tests were storage-transportation 

tests conducted on the Nevada Test and Training Range.

Diamond Sculls was a test conducted on July 20, 1972, in a tunnel at 

Rainier Mesa on the NNSS. Diamond Sculls was a weapons effects test 

where the radiation from the detonation traveled 2,000 ft down a 

tapered horizontal line-of-sight pipe to the test chambers (shown 

above), which were 27 ft in diameter. Fast-closure doors in the pipe 

stopped flying debris after the radiation went by and protected the 

experiments from debris-impact damage.

Barnwell was a test 

conducted on 

December 8, 1989, 

underground at 

Pahute Mesa on the 

NNSS. Barnwell was 

a Joint US-UK test 

with a yield of 20 to 

150 kt. Shown at 

right is the 

diagnostic rack 

ready for lowering 

down the 

emplacement hole.

Priscilla was a test conducted on June 24, 1957, at the NNSS. 

It was a balloon, weapons related test that produced a yield of 37 kt.
xxi

Cannikin was a test conducted on 

November 6, 1971, at Amchitka 

Island, Alaska, one of the 

westernmost islands on the 

Aleutian Islands chain. Cannikin

was a weapons related test of the 

W71 Spartan missile warhead. 

With a yield of less than 5 Mt, 

Cannikin is the largest 

underground detonation 

conducted by the United States 

and is important from a seismic 

data perspective.

Sedan crater was formed when a 104-kt explosion buried under 635 ft of 

desert alluvium was fired at the NNSS on July 6, 1962, displacing 

12 million tons of earth. The crater is 320 ft deep and 1,280 ft in diameter.

Project 56 

No. 4 was a 

test conducted 

on January 18, 

1956, in 

Area 11 on the 

NNSS. Project 

56 No. 4 was 

a safety 

experiment 

with a yield of 

1 ton. Part of 

the experiment 

included 

acquiring data 

about 

plutonium 

dispersal under 

conditions 

related to 

detonations 

where there 

could be little to 

no yield.

Handley was conducted on March 26, 1970, in hole U20m in the 

northwestern part of the NNSS. The test yield was more than 1 Mt, 

one of the largest detonations conducted at the NNSS. The downhole 

emplacement of the Handley device and diagnostics rack is 

shown above.
xxii

Table 6 - U.S. Nuclear Tests/Detonations Conducted

on the Nevada National Security Site — By Area

Area 

on the NNSS

Number 

of Tests

Number 

of Detonations

1 8 9

2 144 169

3 266 288

4 40 44

5 19 19

6 4 6

7 92 92

8 13 15

9 115 133

10 57 71

11 9 9

12 61 62

15 3 3

16 6 6

18 5 5

19 36 36

20 49 49

30 1 5

TOTAL 928 1,021

Test Regions on the NNSS

Region Area(s) on the NNSS

(see Figure 4)

Buckboard Mesa 18

Frenchman Flat 5, 11

Pahute Mesa 19, 20

Rainier Mesa 12

Mine Mountain 16

Timber Mountain 30

Yucca Flat 1, 2, 3, 4, 6, 7, 8, 9, 10, 15
xxiii

Figure 4. U.S. Nuclear Test Locations – Areas on the NNSS
xxiv

This page intentionally left blank.
Tests - By Date
1

U.S. Nuclear Tests – By Date
3

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

12:29:00.00 33.677280 -106.475378 4,624 100 Weapons Related 21 kt 1

Operation Crossroads

22:00:00.00 11.590000 165.516700 0 523 Weapons Effects 21 kt 2

21:35:00.00 11.589200 165.518200 0 -90 Weapons Effects 21 kt 3

Operation Sandstone

18:17:00.00 11.665300 162.234000 0 200 Weapons Related 37 kt 4

18:09:00.00 11.619410 162.313825 0 200 Weapons Related 49 kt 5

18:04:00.00 11.551450 162.348100 10 200 Weapons Related 18 kt 6

Operation Ranger

13:45:00.00 36.805100 -115.950200 3,140 1,060 Weapons Related 1 kt 7

13:52:00.00 36.805100 -115.950200 3,140 1,080 Weapons Related 8 kt 8

13:47:00.00 36.805100 -115.950200 3,140 1,080 Weapons Related 1 kt 9

13:49:00.00 36.805100 -115.950200 3,140 1,100 Weapons Related 8 kt 10

13:47:00.00 36.805100 -115.950200 3,140 1,435 Weapons Related 22 kt 11

Operation Greenhouse

18:34:00.00 11.551866 162.347893 10 300 Weapons Related 81 kt 12

18:27:00.00 11.665400 162.233800 10 300 Weapons Related 47 kt 13

21:30:00.00 11.624300 162.303900 10 200 Weapons Related 225 kt 14

18:17:00.00 11.669300 162.241500 10 200 Weapons Related 45.5 kt 15

Operation Buster

14:00:00.00 37.083250 -116.024700 4,169 100 Weapons Related Less than 0.1 kt 16

15:20:00.00 37.084950 -116.021125 4,193 1,118 Weapons Related 3.5 kt 17

15:00:00.00 37.084950 -116.021250 4,193 1,132 Weapons Related 14 kt 18

15:30:00.00 37.084550 -116.020850 4,193 1,417 Weapons Related 21 kt 19

16:30:00.00 37.091900 -116.025300 4,224 1,314 Weapons Related 31 kt 20

Operation Jangle

17:00:00.00 37.131467 -116.039417 4,215 4 Weapons Effects 1.2 kt 21

20:00:00.00 37.169792 -116.043312 4,299 -17 Weapons Effects 1.2 kt 22

Operation Tumbler-Snapper

17:00:00.00 36.797966 -115.936418 3,077 793 Weapons Effects 1 kt 23

2

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type

1

Trinity

First test of a nuclear weapon 

(“Fat Man”)

Plutonium as sole fissile material

07/16/1945 LANL near Alamogordo, 

New Mexico - - - - Tower

Operation Crossroads

2

Able

Plutonium as sole fissile material 

Mark 3 device similar to “Fat Man”

06/30/1946 LANL/DoD Bikini Atoll - - - - Airdrop

3

Baker

Plutonium as sole fissile material 

Mark 3 device similar to “Fat Man”

07/24/1946 LANL/DoD Bikini Atoll - - - - Underwater

Operation Sandstone

4 X-Ray 04/14/1948 LANL Enewetak Atoll - - - - Tower

5 Yoke 04/30/1948 LANL Enewetak Atoll - - - - Tower

6 Zebra 05/14/1948 LANL Enewetak Atoll - - - - Tower

Operation Ranger

7 Able 01/27/1951 LANL NNSS Area 5 Airdrop

8 Baker 01/28/1951 LANL NNSS Area 5 Airdrop

9 Easy 02/01/1951 LANL NNSS Area 5 Airdrop

10 Baker-2 02/02/1951 LANL NNSS Area 5 Airdrop

11 Fox 02/06/1951 LANL NNSS Area 5 Airdrop

Operation Greenhouse

12 Dog 04/07/1951 LANL Enewetak Atoll - - - - Tower

13 Easy 04/20/1951 LANL Enewetak Atoll - - - - Tower

14 George

First thermonuclear test explosion 05/08/1951 LANL Enewetak Atoll - - - - Tower

15 Item

First test of the boosting principle 05/24/1951 LANL Enewetak Atoll - - - - Tower

Operation Buster

16 Able

Radioactivity not detected offsite 10/22/1951 LANL NNSS Area 7 Tower

17 Baker 10/28/1951 LANL NNSS Area 7 Airdrop

18 Charlie 10/30/1951 LANL NNSS Area 7 Airdrop

19 Dog 11/01/1951 LANL NNSS Area 7 Airdrop

20 Easy 11/05/1951 LANL NNSS Area 7 Airdrop

Operation Jangle

21 Sugar 11/19/1951 LANL/DoD NNSS Area 9 Surface

22 Uncle

First underground test at the NNSS 11/29/1951 LANL/DoD NNSS U10 Uncle Crater

Operation Tumbler-Snapper

23 Able 04/01/1952 LANL/DoD NNSS Area 5 Airdrop
5

Operation Tumbler-Snapper – Continued

17:30:00.00 37.084120 -116.020306 4,193 1,109 Weapons Effects 1 kt 24

17:30:00.00 37.084400 -116.021143 4,193 3,447 Weapons Related 31 kt 25

16:30:00.00 37.084120 -116.021140 4,193 1,040 Weapons Related 19 kt 26

12:15:00.00 37.053040 -116.103504 4,329 300 Weapons Related 12 kt 27

12:00:00.00 37.095488 -116.103616 4,309 300 Weapons Related 11 kt 28

11:55:00.00 37.095488 -116.103616 4,028 300 Weapons Related 15 kt 29

11:55:00.00 37.138372 -116.118258 4,492 300 Weapons Related 14 kt 30

Operation Ivy

19:15:00.00 11.667000 162.189900 10 7 Weapons Related 10.4 Mt 31

23:30:00.00 11.558800 162.345400 0 1,480 Weapons Related 500 kt 32

Operation Upshot-Knothole

13:20:00.00 37.095488 -116.103616 4,026 300 Weapons Related 16 kt 33

13:10:00.00 37.095488 -116.103616 4,309 300 Weapons Related 24 kt 34

13:00:00.00 37.085291 -116.022137 4,000 305 Weapons Related 200 tons 35

15:30:00.00 37.084604 -116.020654 4,025 6,022 Weapons Related 11 kt 36

12:45:00.00 37.098891 -116.093345 4,026 100 Weapons Related 200 tons 37

12:35:00.00 37.138372 -116.118258 4,491 300 Weapons Related 23 kt 38

12:30:00.00 37.053040 -116.103504 4,239 300 Weapons Related 43 kt 39

15:30:00.00 36.797923 -115.929776 3,077 2,423 Weapons Effects 27 kt 40

12:05:00.00 37.040342 -116.026241 4,006 300 Weapons Related 32 kt 41

15:30:00.00 36.797923 -115.929776 3,077 524 Weapons Related 15 kt 42

11:15:00.00 37.087549 -116.019208 4,025 1,334 Weapons Related 61 kt 43

Operation Castle

18:45:00.00 11.697130 165.274200 10 7 Weapons Related 15 Mt 44

18:30:00.00 11.697130 165.274200 0 7 Weapons Related 11 Mt 45

18:20:00.00 11.503166 165.369450 10 14 Weapons Related 110 kt 46

18:05:00.00 11.679000 165.391500 0 7 Weapons Related 6.9 Mt 47

18:10:00.00 11.679000 165.391500 0 7 Weapons Related 13.5 Mt 48

18:20:00.00 11.666600 162.190000 0 7 Weapons Related 1.69 Mt 49

Operation Teapot

20:00:00.00 37.086535 -116.022735 4,195 762 Weapons Effects 1 kt 50

13:45:00.00 37.095488 -116.103616 4,026 300 Weapons Related 2 kt 51

13:30:00.00 37.125389 -116.048387 4,021 300 Weapons Related 7 kt 52

13:20:00.00 37.138372 -116.118258 4,491 500 Weapons Related 43 kt 53

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

4

Operation Tumbler-Snapper – Continued

24 Baker 04/15/1952 LANL/DoD NNSS Area 7 Airdrop

25 Charlie 04/22/1952 LANL/DoD NNSS Area 7 Airdrop

26 Dog 05/01/1952 LANL NNSS Area 7 Airdrop

27 Easy 05/07/1952 LANL NNSS Area 1 Tower

28 Fox 05/25/1952 LANL NNSS Area 4 Tower

29 George 06/01/1952 LANL NNSS Area 3 Tower

30 How 06/05/1952 LANL NNSS Area 2 Tower

Operation Ivy

31 Mike

Experimental thermonuclear device 10/31/1952 LANL Enewetak Atoll - - - - Surface

32 King

Largest fission device 11/15/1952 LANL Enewetak Atoll - - - - Airdrop

Operation Upshot-Knothole

33 Annie 03/17/1953 LANL NNSS Area 3 Tower

34 Nancy 03/24/1953 LANL NNSS Area 4 Tower

35 Ruth 03/31/1953 LLNL NNSS Area 7 Tower

36 Dixie 04/06/1953 LANL NNSS Area 7 Airdrop

37 Ray 04/11/1953 LLNL NNSS Area 4 Tower

38 Badger 04/18/1953 LANL NNSS Area 2 Tower

39 Simon 04/25/1953 LANL NNSS Area 1 Tower

40 Encore 05/08/1953 LANL/DoD NNSS Area 5 Airdrop

41 Harry 05/19/1953 LANL NNSS Area 3 Tower

42

Grable

Fired from 280mm gun

Test of the Mk9 nuclear weapon

05/25/1953 LANL NNSS Area 5 Airburst

43 Climax 06/04/1953 LANL NNSS Area 7 Airdrop

Operation Castle

44

Bravo

Experimental thermonuclear device

Highest-yield U.S. nuclear test

02/28/1954 LANL Bikini Atoll - - - - Surface

45 Romeo 03/26/1954 LANL Bikini Atoll - - - - Barge

46 Koon 04/06/1954 LLNL Bikini Atoll - - - - Surface

47 Union 04/25/1954 LANL Bikini Atoll - - - - Barge

48 Yankee 05/04/1954 LANL Bikini Atoll - - - - Barge

49 Nectar 05/13/1954 LANL Enewetak Atoll - - - - Barge

Operation Teapot

50 Wasp 02/18/1955 LANL NNSS Area 7 Airdrop

51 Moth 02/22/1955 LANL NNSS Area 3 Tower

52 Tesla 03/01/1955 LLNL NNSS Area 9 Tower

53 Turk 03/07/1955 LLNL NNSS Area 2 Tower

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
7

Operation Teapot – Continued

13:20:00.00 37.040342 -116.026241 4,007 300 Weapons Related 4 kt 54

13:05:00.00 37.094780 -116.024575 4,245 500 Weapons Related 8 kt 55

20:30:00.00 37.168412 -116.044669 4,288 -67 Weapons Effects 1 kt 56

12:55:00.00 37.095488 -116.103616 4,309 500 Weapons Related 14 kt 57

18:00:00.00 37.086535 -116.022735 4,194 739 Weapons Related 3 kt 58

18:00:00.00 37.028664 -116.058714 4,038 40,000 Weapons Effects 3 kt 59

12:30:00.00 37.122090 -116.035276 4,236 300 Weapons Related 2 kt 60

19:15:00.00 36.797923 -115.929776 3,078 400 Weapons Effects 22 kt 61

12:10:00.00 37.053040 -116.103504 4,236 500 Weapons Related 29 kt 62

12:00:00.00 37.094780 -116.024575 4,245 500 Weapons Related 28 kt 63

Operation Wigwam

20:00:00.00 28.733340 -126.266743 0 -2,000 Weapons Effects 30 kt 64

Operation Project 56

22:10:00.00 36.984430 -115.961640 4,200 3 Safety Experiment Zero 65

21:15:00.00 36.980075 --115.959525 4,200 3 Safety Experiment Zero 66

19:55:00.00 36.975695 -115.957455 4,200 3 Safety Experiment 36 grams 67

21:30:00.00 36.971340 -115.955350 4,200 3 Safety Experiment 1 ton 68

Operation Redwing

18:25:00.00 11.553878 162.348050 17 0 Weapons Related 40 kt 69

17:51:00.00 11.723000 165.306000 0 4,350 Weapons Related 3.8 Mt 70

17:56:00.00 11.503166 165.370537 9 0 Weapons Related 3.5 Mt 71

19:56:00.00 11.618730 162.314125 10 205 Weapons Related 190 tons 72

18:15:00.00 11.540100 162.357950 10 300 Weapons Related 14.9 kt 73

00:55:00.00 11.672427 162.210365 4 0 Weapons Related 13.7 kt 74

18:26:00.00 11.688500 165.390000 0 15 Weapons Related 365 kt 75

18:26:00.00 11.547200 162.352050 10 200 Weapons Related 8 kt 76

23:26:00.00 11.623857 162.318780 10 300 Weapons Related 1.49 kt 77

01:14:00.00 11.540150 162.356400 0 670 Weapons Related 1.7 kt 78

21:56:00.00 11.629300 162.285000 10 200 Weapons Related 15.2 kt 79

18:06:00.00 11.679000 165.391500 0 10 Weapons Related 1.1 Mt 80

18:06:00.00 11.627589 162.295691 10 300 Weapons Related 360 kt 81

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

6

Operation Teapot – Continued

54 Hornet 03/12/1955 LANL NNSS Area 3 Tower

55 Bee 03/22/1955 LANL NNSS Area 7 Tower

56 ESS

(Effects SubSurface) 03/23/1955 LANL NNSS U10 ESS Crater

57 Apple-1 03/29/1955 LANL NNSS Area 4 Tower

58 Wasp Prime 03/29/1955 LANL NNSS Area 7 Airdrop

59

HA

Named “HA” for “high altitude” in 

reference to its intended detonation at 

an altitude of 40,000 ft

04/06/1955 LANL NNSS Area 1 Airdrop

60 Post 04/09/1955 LLNL NNSS Area 9 Tower

61 MET

(Military Effects Test) 04/15/1955 LANL/DoD NNSS Area 5 Tower

62 Apple-2 05/05/1955 LANL NNSS Area 1 Tower

63 Zucchini 05/15/1955 LANL NNSS Area 7 Tower

Operation Wigwam

64 Wigwam 05/14/1955 LANL/DoD Pacific - - - - Underwater

Operation Project 56

65 Project 56 No. 1 11/01/1955 LANL NNSS Area 11a Surface

66 Project 56 No. 2

Plutonium dispersal 11/03/1955 LANL NNSS Area 11b Surface

67 Project 56 No. 3

Plutonium dispersal 11/05/1955 LANL NNSS Area 11c Surface

68 Project 56 No. 4

Plutonium dispersal 01/18/1956 LANL NNSS Area 11d Surface

Operation Redwing

69 Lacrosse 05/04/1956 LANL Enewetak Atoll - - - - Surface

70

Cherokee

First airdrop by U.S. of a 

thermonuclear weapon

05/20/1956 LANL/DoD Bikini Atoll - - - - Airdrop

71 Zuni 05/27/1956 LLNL Bikini Atoll - - - - Surface

72 Yuma 05/27/1956 LLNL Enewetak Atoll - - - - Tower

73 Erie 05/30/1956 LANL Enewetak Atoll - - - - Tower

74 Seminole 06/06/1956 LANL Enewetak Atoll - - - - Surface

75 Flathead 06/12/1956 LANL Bikini Atoll - - - - Barge

76 Blackfoot 06/12/1956 LANL Enewetak Atoll - - - - Tower

77 Kickapoo 06/13/1956 LLNL Enewetak Atoll - - - - Tower

78 Osage 06/16/1956 LANL Enewetak Atoll - - - - Airdrop

79 Inca 06/21/1956 LLNL Enewetak Atoll - - - - Tower

80 Dakota 06/25/1956 LANL Bikini Atoll - - - - Barge

81 Mohawk 07/02/1956 LLNL Enewetak Atoll - - - - Tower

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
9

Operation Redwing – Continued

18:06:00.00 11.670900 162.199600 0 10 Weapons Related 1.85 Mt 82

17:56:00.00 11.679000 165.391500 0 15 Weapons Related 4.5 Mt 83

17:46:00.00 11.680000 165.341000 0 15 Weapons Related 5 Mt 84

18:16:00.00 11.677817 162.204974 0 15 Weapons Related 250 kt 85

Operation Plumbbob

14:27:00.00 37.319302 -115.906141 4,585 0 Safety Experiment Zero 86

11:55:00.00 37.094825 -116.024500 4,235 500 Weapons Related 12 kt 87

11:55:00.00 37.095488 -116.103616 4,026 300 Weapons Related 140 tons 88

11:45:00.00 37.134742 -116.041648 4,230 500 Weapons Related 0.5 tons 89

11:45:00.00 37.134742 -116.041648 4,230 500 Weapons Related 10 kt 90

13:30:00.00 36.797923 -115.929776 3,076 700 Weapons Related 37 kt 91

17:30:00.00 37.041200 -116.026880 4,000 0 Safety Experiment Zero 92

11:40:00.00 37.134742 -116.041648 4,230 1,500 Weapons Related 74 kt 93

11:30:00.00 37.150200 -116.109485 4,469 500 Weapons Related 17 kt 94

14:00:00.00 37.160350 -116.053805 4,280 14,830 Weapons Effects About 2 kt 95

11:50:00.00 37.095488 -116.103616 4,309 500 Weapons Related 10 kt 96

13:30:00.00 37.134742 -116.041648 4,215 500 Weapons Related 9.7 kt 97

08:00:00.00 37.051722 -116.034289 4,033 -500 Safety Experiment 56 tons 98

12:25:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 19 kt 99

00:59:55.10 37.193818 -116.200738 7,061 -128 Safety Experiment Zero 100

12:00:00.00 37.127880 -116.107280 4,387 500 Weapons Related 17 kt 101

12:00:00.00 37.086540 -116.024805 4,230 1,500 Weapons Related 11 kt 102

22:35:00.00 37.049000 -116.034810 4,028 -500 Safety Experiment 1 gram 103

12:40:00.00 37.086540 -116.024805 4,186 750 Weapons Related 4.7 kt 104

12:30:00.00 37.187200 -116.068670 4,479 700 Weapons Related 44 kt 105

12:40:00.00 37.053040 -116.103504 4,250 500 Weapons Related 11 kt 106

12:45:00.00 37.134742 -116.041648 4,230 500 Weapons Related 197 tons 107

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

8

Operation Redwing – Continued

82 Apache 07/08/1956 LLNL Enewetak Atoll - - - - Barge

83 Navajo 07/10/1956 LANL Bikini Atoll - - - - Barge

84 Tewa 07/20/1956 LLNL Bikini Atoll - - - - Barge

85 Huron 07/21/1956 LANL Enewetak Atoll - - - - Barge

Operation Plumbbob

86

Project 57 No. 1

Plutonium dispersal

Test is also considered under 

Operation Project 57

04/24/1957 LANL/DoD NTTR - - - - Surface

87 Boltzmann 05/28/1957 LANL NNSS Area 7 Tower

88 Franklin 06/02/1957 LANL NNSS Area 3 Tower

89 Lassen

Radioactivity not detected offsite 06/05/1957 LLNL NNSS Area 9 Balloon

90 Wilson 06/18/1957 LLNL NNSS Area 9 Balloon

91 Priscilla 06/24/1957 LANL/DoD NNSS Area 5 Balloon

92 Coulomb-A

Radioactivity not detected offsite 07/01/1957 LANL NNSS Area 3 Surface

93 Hood

Highest-yield NNSS atmospheric test 07/05/1957 LLNL NNSS Area 9 Balloon

94 Diablo 07/15/1957 LLNL NNSS Area 2 Tower

95

John

W25 warhead on an air-to-air Genie 

rocket launched from an F-89J 

fighter aircraft

07/19/1957 LANL/DoD NNSS Area 10 Rocket

96 Kepler 07/24/1957 LANL NNSS Area 4 Tower

97 Owens 07/25/1957 LLNL NNSS Area 9 Balloon

98

Pascal-A

Unstemmed hole (known as a Roman 

Candle test)

First non-crater underground test on 

the NNSS

07/26/1957 LANL NNSS U3j Shaft

99 Stokes 08/07/1957 LANL NNSS Area 7 Balloon

100 Saturn

No radioactive release detected 08/10/1957 LLNL NNSS U12c.02 Tunnel

101 Shasta 08/18/1957 LLNL NNSS Area 2 Tower

102 Doppler 08/23/1957 LANL NNSS Area 7 Balloon

103

Pascal-B

Unstemmed hole

No radioactive release detected

08/27/1957 LANL NNSS U3d Shaft

104 Franklin Prime 08/30/1957 LANL NNSS Area 7 Balloon

105 Smoky 08/31/1957 LLNL NNSS Area 8 Tower

106 Galileo 09/02/1957 LANL NNSS Area 1 Tower

107 Wheeler 09/06/1957 LLNL NNSS Area 9 Balloon

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
11

Operation Plumbbob – Continued

20:05:00.00 37.042900 -116.027100 4,035 3 Safety Experiment 300 tons 108

13:00:00.00 37.086540 -116.024805 4,186 750 Weapons Related 1 kt 109

16:45:00.00 37.033430 -116.032243 4,030 500 Weapons Related 11 kt 110

12:50:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 12 kt 111

16:59:59.45 37.195732 -116.204029 7,515 -899 Weapons Related 1.7 kt 112

12:30:00.00 37.138372 -116.118258 4,486 500 Weapons Related 19 kt 113

13:00:00.00 37.134742 -116.041648 4,215 1,500 Weapons Related 12 kt 114

13:00:00.00 37.134742 -116.041648 4,214 500 Weapons Related 8 kt 115

Operation Project 58

22:15:00.00 37.049895 -116.031734 4,031 -250 Safety Experiment 38 tons 116

20:00:00.00 37.048200 -116.025200 4,050 0 Safety Experiment 500 tons 117

Operation Project 58A

01:00:00.00 37.193204 -116.201085 7,177 -100 Safety Experiment 1 gram 118

22:00:00.00 37.193818 -116.200738 6,751 -114 Safety Experiment 726 grams 119

Operation Hardtack I

These tests were conducted as Operation Newsreel

02:40:00.00 12.616667 163.016667 0 86,000 Weapons Effects 1.7 kt 120

18:15:00.00 11.697130 165.274200 5 3 Weapons Related 18 kt 121

17:50:00.00 11.697275 165.280000 0 10 Weapons Related 1.36 Mt 122

18:15:00.00 11.542700 162.338600 0 10 Weapons Related 81 kt 123

18:30:00.00 11.670990 162.198652 5 3 Weapons Related 1.37 Mt 124

01:30:00.00 11.343500 162.174900 0 -500 Weapons Effects 9 kt 125

18:30:00.00 11.537300 162.347400 0 13 Weapons Related 5.9 kt 126

21:20:00.00 11.503000 165.374000 0 12 Weapons Related 25.1 kt 127

02:00:00.00 11.659775 162.223408 0 11 Weapons Related 330 kt 128

18:00:00.00 11.535000 162.345000 0 14 Weapons Related 57 kt 129

02:15:00.00 11.691220 162.214650 0 10 Weapons Related 11.6 kt 130

03:00:00.00 11.697275 165.280000 0 12 Weapons Related 92 kt 131

18:45:00.00 11.532600 162.342600 0 15 Weapons Related 15 kt 132

23:15:00.00 11.378000 162.212000 0 -150 Weapons Effects 8 kt 133

17:30:00.00 11.693940 165.416375 0 12 Weapons Related 213 kt 134

17:30:00.00 11.697275 165.280000 0 11 Weapons Related 319 kt 135

18:30:00.00 11.684700 162.239850 0 7 Weapons Related 1.45 Mt 136

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

10

Operation Plumbbob – Continued

108 Coulomb-B 09/06/1957 LANL NNSS S3g Surface

109 Laplace 09/08/1957 LANL NNSS Area 7 Balloon

110 Fizeau 09/14/1957 LANL NNSS Area 3 Tower

111 Newton 09/16/1957 LANL NNSS Area 7 Balloon

112

Rainier

First detonation contained underground

No radioactive release detected

09/19/1957 LLNL NNSS U12b Tunnel

113 Whitney 09/23/1957 LLNL NNSS Area 2 Tower

114 Charleston 09/28/1957 LLNL NNSS Area 9 Balloon

115 Morgan 10/07/1957 LLNL NNSS Area 9 Balloon

Operation Project 58

116

Pascal-C

Unstemmed hole

Radioactivity not detected offsite

12/06/1957 LANL NNSS U3e Shaft

117 Coulomb-C 12/09/1957 LANL NNSS S3i Surface

Operation Project 58A

118 Venus

No radioactive release detected 02/22/1958 LLNL NNSS U12d.01 Tunnel

119 Uranus

No radioactive release detected 03/14/1958 LLNL NNSS U12c.01 Tunnel

Operation Hardtack I

Note: Three DoD high altitude tests were conducted in the Pacific during Operation Hardtack I.

120

Yucca

Operation Newsreel

High altitude - 86,000 ft

04/28/1958 LANL/DoD Pacific - - - - Balloon

121 Cactus 05/05/1958 LANL Enewetak Atoll - - - - Surface

122 Fir 05/11/1958 LLNL Bikini Atoll - - - - Barge

123 Butternut 05/11/1958 LANL Enewetak Atoll - - - - Barge

124 Koa 05/12/1958 LANL Enewetak Atoll - - - - Surface

125 Wahoo 05/16/1958 LANL/DoD Enewetak Atoll - - - - Underwater

126 Holly 05/20/1958 LANL Enewetak Atoll - - - - Barge

127 Nutmeg 05/21/1958 LLNL Bikini Atoll - - - - Barge

128 Yellowwood 05/26/1958 LANL Enewetak Atoll - - - - Barge

129 Magnolia 05/26/1958 LANL Enewetak Atoll - - - - Barge

130 Tobacco 05/30/1958 LANL Enewetak Atoll - - - - Barge

131 Sycamore 05/31/1958 LLNL Bikini Atoll - - - - Barge

132 Rose 06/02/1958 LANL Enewetak Atoll - - - - Barge

133 Umbrella 06/09/1958 LANL/DoD Enewetak Atoll - - - - Underwater

134 Maple 06/10/1958 LLNL Bikini Atoll - - - - Barge

135 Aspen 06/14/1958 LLNL Bikini Atoll - - - - Barge

136 Walnut 06/14/1958 LANL Enewetak Atoll - - - - Barge

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
13

Operation Hardtack I – Continued

03:00:00.00 11.608900 162.321300 0 8 Weapons Related 11 kt 137

17:30:00.00 11.693940 165.416375 0 11 Weapons Related 412 kt 138

18:30:00.00 11.677200 162.185255 0 9 Weapons Related 880 kt 139

19:30:00.00 11.605086 162.100486 0 6 Weapons Related 8.9 Mt 140

24:00:00.00 11.503000 165.374000 0 12 Weapons Related 14 kt 141

18:30:00.00 11.543050 162.347000 0 6 Weapons Related 5.2 kt 142

17:30:00.00 11.697275 165.280000 0 11 Weapons Related 220 kt 143

18:30:00.00 11.677570 162.206157 0 12 Weapons Related 397 kt 144

03:30:00.00 11.694458 165.265189 0 12 Weapons Related 9.3 Mt 145

04:00:00.00 11.550000 162.342500 0 20 Safety Experiment Zero 146

23:00:00.00 11.541000 162.320000 0 6 Weapons Related 255 kt 147

04:20:00.00 11.503000 165.374000 0 12 Weapons Related 65 kt 148

20:30:00.00 11.678501 162.208073 0 8 Weapons Related 202 kt 149

20:30:00.00 11.651260 162.219650 0 8 Weapons Related 2 Mt 150

10:50:00.00 16.743889 -169.533333 0 252,000 Weapons Effects 3.8 Mt 151

02:15:00.00 11.545500 162.352700 10 3 Weapons Related Zero 152

10:30:00.00 16.358333 -169.535556 0 141,000 Weapons Effects 3.8 Mt 153

04:00:00.00 11.545500 162.352700 10 2 Weapons Related 20 tons 154

Operation Argus

02:28:00.00 -38.800000 -10.900000 0 ~300 miles Weapons Effects 1.7 kt 155

02:28:00.00 -49.400000 -8.700000 0 ~300 miles Weapons Effects 1.7 kt 156

22:13:00.00 -49.500000 -10.450000 0 ~300 miles Weapons Effects 1.7 kt 157

Operation Hardtack II

20:00:00.00 37.049848 -116.032715 4,032 -480 Safety Experiment 38 tons 158

19:30:00.00 37.049512 -116.034010 4,028 -456 Safety Experiment 15 tons 159

14:00:00.00 37.086540 -116.024805 4,186 500 Weapons Related 83 tons 160

19:00:00.00 37.049193 -116.034571 4,028 -484 Safety Experiment 1.5 tons 161

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

12

Operation Hardtack I – Continued

137 Linden 06/18/1958 LANL Enewetak Atoll - - - - Barge

138 Redwood 06/27/1958 LLNL Bikini Atoll - - - - Barge

139 Elder 06/27/1958 LANL Enewetak Atoll - - - - Barge

140 Oak 06/28/1958 LANL Enewetak Atoll - - - - Barge

141 Hickory 06/29/1958 LLNL Bikini Atoll - - - - Barge

142 Sequoia 07/01/1958 LANL Enewetak Atoll - - - - Barge

143 Cedar 07/02/1958 LLNL Bikini Atoll - - - - Barge

144 Dogwood 07/05/1958 LLNL Enewetak Atoll - - - - Barge

145 Poplar 07/12/1958 LLNL Bikini Atoll - - - - Barge

146 Scaevola 07/14/1958 LANL Enewetak Atoll - - - - Barge

147 Pisonia 07/17/1958 LANL Enewetak Atoll - - - - Barge

148 Juniper 07/22/1958 LLNL Bikini Atoll - - - - Barge

149 Olive 07/22/1958 LLNL Enewetak Atoll - - - - Barge

150 Pine 07/26/1958 LLNL Enewetak Atoll - - - - Barge

151

Teak

Operation Newsreel

High altitude – 77 kilometers

08/01/1958 LANL/DoD Johnston Island 

area

- - - - Rocket

152 Quince 08/06/1958 LLNL/DoD Enewetak Atoll - - - - Surface

153

Orange

Operation Newsreel

High altitude – 43 kilometers

08/12/1958 LANL/DoD Johnston Island 

area

- - - - Rocket

154 Fig 08/18/1958 LLNL/DoD Enewetak Atoll - - - - Surface

Operation Argus

155

Argus I

About 300 miles altitude

South 38.5 degrees, West 11.5 degrees

08/27/1958 LANL/DoD South Atlantic - - - - Rocket

156

Argus II

About 300 miles altitude

South 49.5 degrees, West 8.2 degrees

08/30/1958 LANL/DoD South Atlantic - - - - Rocket

157

Argus III

About 300 miles altitude

South 48.5 degrees, West 9.7 degrees

09/06/1958 LANL/DoD South Atlantic - - - - Rocket

Operation Hardtack II

158 Otero

Unstemmed hole 09/12/1958 LANL NNSS U3q Shaft

159

Bernalillo

Unstemmed hole

Radioactivity not detected offsite

09/17/1958 LANL NNSS U3n Shaft

160 Eddy 09/19/1958 LANL NNSS Area 7 Balloon

161

Luna

Unstemmed hole

Radioactivity not detected offsite

09/21/1958 LANL NNSS U3m Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
15

Operation Hardtack II – Continued

22:00:00.00 37.193429 -116.201671 6,712 -183 Safety Experiment 1 gram 162

20:00:00.00 37.049538 -116.030696 4,029 -484 Safety Experiment 2 tons 163

00:00:00.00 37.193049 -116.201457 6,725 -125 Safety Experiment 13 tons 164

14:05:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 2 kt 165

14:10:00.00 37.086540 -116.024805 4,186 377 Safety Experiment 77 tons 166

16:15:00.00 37.048795 -116.035040 4,029 -350 Safety Experiment 5.5 tons 167

22:00:00.13 37.195257 -116.201330 7,019 -330 Weapons Related 72 tons 168

14:30:00.00 37.094825 -116.024500 4,249 100 Weapons Related 79 tons 169

13:20:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 1.4 kt 170

18:00:00.00 37.193809 -116.200563 7,530 -98 Safety Experiment 115 tons 171

16:00:00.00 36.802261 -115.933075 3,080 50 Weapons Related 1.2 tons 172

06:00:00.14 37.184127 -116.201996 7,071 -930 Weapons Related 5 kt 173

14:20:00.00 37.086540 -116.024805 4,186 450 Weapons Related 37 tons 174

23:00:00.00 37.122600 -116.035400 4,226 0 Safety Experiment 24 tons 175

14:25:00.00 37.040875 -116.026750 4,010 73 Weapons Related 90 tons 176

14:30:00.00 37.049734 -116.033384 4,029 -234 Safety Experiment Zero 177

13:30:00.00 37.086540 -116.024805 1,450 1,450 Weapons Related 6 kt 178

16:50:00.00 36.797923 -115.929776 3,077 1,500 Weapons Related 115 tons 179

20:30:00.00 37.182847 -116.069270 4,446 25 Safety Experiment Zero 180

23:40:00.00 37.134742 -116.041648 4,244 500 Weapons Related 188 tons 181

15:00:00.00 37.042800 -116.027800 4,026 73 Safety Experiment 21 tons 182

16:01:00.00 37.123250 -116.038650 4,210 0 Safety Experiment 1.7 tons 183

04:00:00.00 37.181329 -116.069535 4,428 25 Safety Experiment 0.7 tons 184

10:20:00.00 36.797923 -115.929776 3,077 1,500 Weapons Related 4.9 kt 185

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

14

Operation Hardtack II – Continued

162 Mercury

No radioactive release detected 09/23/1958 LLNL NNSS U12f.01 Tunnel

163

Valencia

Unstemmed hole

Radioactivity not detected offsite

09/26/1958 LANL NNSS U3r Shaft

164

Mars

Slight venting

Radioactivity not detected offsite

09/28/1958 LLNL NNSS U12f.02 Tunnel

165 Mora 09/29/1958 LANL NNSS Area 7 Balloon

166 Hidalgo 10/05/1958 LANL NNSS Area 7 Balloon

167

Colfax

Unstemmed hole

Radioactivity not detected offsite

10/05/1958 LANL NNSS U3k Shaft

168

Tamalpais

Slight venting

Radioactivity not detected offsite

10/08/1958 LLNL NNSS U12b.02 Tunnel

169 Quay 10/10/1958 LANL NNSS Area 7 Tower

170 Lea 10/13/1958 LANL NNSS Area 7 Balloon

171

Neptune

Slight venting

Radioactivity not detected offsite

10/14/1958 LLNL NNSS U12c.03 Tunnel

172 Hamilton 10/15/1958 LLNL/DoD NNSS Area 5 Tower

173 Logan

No radioactive release detected 10/16/1958 LLNL NNSS U12e.02 Tunnel

174 Dona Ana 10/16/1958 LANL NNSS Area 7 Balloon

175 Vesta

Fired in surface structure 10/17/1958 LLNL NNSS S9e Surface

176 Rio Arriba 10/18/1958 LANL NNSS Area 3 Tower

177

San Juan

Unstemmed hole

No radioactive release detected

10/20/1958 LANL NNSS U3p Shaft

178 Socorro 10/22/1958 LANL NNSS Area 7 Balloon

179 Wrangell 10/22/1958 LLNL NNSS Area 5 Balloon

180 Oberon

No radioactive release detected 10/22/1958 LLNL NNSS Area 8 Tower

181 Rushmore 10/22/1958 LLNL NNSS Area 9 Balloon

182 Catron 10/24/1958 LANL NNSS Area 3 Tower

183

Juno

Fired in surface structure

Radioactivity not detected offsite

10/24/1958 LLNL NNSS S9f Surface

184 Ceres

Radioactivity not detected offsite 10/26/1958 LLNL NNSS Area 8 Tower

185 Sanford 10/26/1958 LLNL NNSS Area 5 Balloon

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
17

Operation Hardtack II – Continued

16:00:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 2.2 kt 186

14:30:00.00 37.044600 -116.030650 4,025 52 Safety Experiment 0.6 tons 187

00:00:00.15 37.194804 -116.205604 7,472 -840 Weapons Related 55 tons 188

11:20:00.00 37.126459 -116.041931 4,202 50 Weapons Related Zero 189

14:45:00.00 37.047565 -116.025425 4,029 25 Weapons Related 7.8 tons 190

03:00:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 1.3 kt 191

11:00:00.00 37.125587 -116.047855 4,193 0 Safety Experiment Zero 192

15:00:00.15 37.185883 -116.202885 7,126 -987 Weapons Related 22 kt 193

20:34:00.00 37.177200 -116.070050 4,403 25 Safety Experiment 0.2 tons 194

Operation Nougat

17:00:00.12 37.187905 -116.208633 7,483 -1,319 Weapons Related 2.6 kt 195

19:45:00.12 37.048408 -116.033673 4,027 -322 Weapons Related Low 196

21:30:00.12 37.048294 -116.035380 4,028 -330 Weapons Related Low 197

18:00:00.13 37.194242 -116.207891 7,472 -838 Weapons Related Low 198

18:30:00.13 37.048520 -116.031965 4,028 -630 Weapons Related Low 199

23:04:59.63 37.045810 -116.028544 4,020 -1,193 Weapons Related 13.4 kt 200

19:00:00.00 32.263160 -103.866460 3,400 -1,184 Plowshare 3 kt 201

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

16

Operation Hardtack II – Continued

186 De Baca 10/26/1958 LANL NNSS Area 7 Balloon

187 Chaves (Chavez) 10/27/1958 LANL NNSS Area 3 Tower

188

Evans

Venting

Radioactivity not detected offsite

10/29/1958 LLNL NNSS U12b.04 Tunnel

189 Mazama

No radioactive release detected 10/29/1958 LLNL NNSS Area 9 Tower

190 Humboldt 10/29/1958 LLNL/DoD NNSS Area 3 Tower

191 Santa Fe 10/30/1958 LANL NNSS Area 7 Balloon

192

Ganymede

Contained in surface structure

No radioactive release detected

10/30/1958 LLNL NNSS S9g Surface

193 Blanca

Slight venting 10/30/1958 LLNL NNSS U12e.05 Tunnel

194 Titania 10/30/1958 LLNL NNSS Area 8 Tower

Operation Nougat

195

Antler

Accidental release of radioactivity 

detected offsite

09/15/1961 LLNL NNSS U12e.03a Tunnel

196

Shrew

Accidental release of radioactivity 

detected onsite only

09/16/1961 LANL NNSS U3ac Shaft

197

Boomer 

Accidental release of radioactivity 

detected onsite only

10/01/1961 LANL NNSS U3aa Shaft

198

Chena

Accidental release of radioactivity 

detected onsite only

10/10/1961 LLNL NNSS U12b.09 Tunnel

199

Mink 

First underground test to eventually 

result in a surface subsidence crater 

(years later)

Accidental and drillback release of 

radioactivity detected onsite only

10/29/1961 LANL NNSS U3ae Shaft

200

Fisher 

First surface subsidence crater to form 

at the NNSS

Accidental and drillback release of 

radioactivity detected onsite only

12/03/1961 LANL NNSS U3ah Shaft

201

Gnome

Multiple-purpose experiment in salt

Formed cavity 160–170 ft diameter, 

60–80 ft high

Accidental release of 

radioactivity detected offsite

12/10/1961 LLNL near Carlsbad, 

New Mexico - - - - Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
19

Operation Nougat – Continued

18:00:00.16 37.126555 -116.049629 4,204 -596 Weapons Related 500 tons 202

16:35:00.13 37.043114 -116.026182 4,014 -1,191 Weapons Related Low 203

16:30:00.13 37.194884 -116.209161 7,443 -812 Weapons Related 150 tons 204

16:30:00.14 37.044592 -116.035932 4,021 -992 Weapons Related 5.1 kt 205

18:00:00.13 37.047200 -116.035232 4,027 -856 Weapons Related 6.4 kt 206

18:00:00.13 37.046799 -116.040351 4,026 -1,191 Weapons Related Low 207

18:00:00.16 37.127202 -116.053524 4,209 -595 Weapons Related 3.07 kt 208

16:30:00.13 37.043530 -116.039826 4,019 -786 Weapons Related 7.1 kt 209

18:00:00.10 37.226214 -116.060187 5,114 -943 Weapons Effects 5.7 kt 210

16:30:00.13 37.049006 -116.030398 4,030 -492 Weapons Related 1.9 kt 211

17:50:00.16 37.127406 -116.037989 4,217 -696 Weapons Related Low 212

18:00:00.16 37.128808 -116.049178 4,208 -1,000 Weapons Related 11.9 kt 213

16:30:00.13 37.048288 -116.032772 4,026 -190 Weapons Related Low 214

19:10:00.09 37.041217 -116.029549 4,012 -1,191 Joint US-UK 9.5 kt 215

18:15:00.12 37.111003 -116.365835 5,384 -110 Weapons Effects 430 tons 216

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

18

Operation Nougat – Continued

202

Mad

Accidental release of radioactivity 

detected onsite only

12/13/1961 LLNL NNSS U9a Shaft

203

Ringtail 

Accidental release of radioactivity 

detected onsite only

12/17/1961 LANL NNSS U3ak Shaft

204

Feather

Accidental release of radioactivity 

detected offsite

12/22/1961 LLNL NNSS U12b.08 Tunnel

205

Stoat 

Accidental and drillback release of 

radioactivity detected onsite only

01/09/1962 LANL NNSS U3ap Shaft

206 Agouti  01/18/1962 LANL NNSS U3ao Shaft

207

Dormouse 

Drillback release of radioactivity 

detected onsite only

01/30/1962 LANL NNSS U3aq Shaft

208

Stillwater 

Drillback release of radioactivity 

detected onsite only

02/08/1962 LLNL NNSS U9c Shaft

209

Armadillo 

Accidental and drillback release of 

radioactivity detected onsite only

02/09/1962 LANL NNSS U3ar Shaft

210

Hard Hat

Accidental and drillback release of 

radioactivity detected onsite only

02/15/1962 LANL/DoD/ SNL NNSS U15a Shaft

211

Chinchilla 

Accidental and drillback release of 

radioactivity detected onsite only

02/19/1962 LANL NNSS U3ag Shaft

212

Codsaw 

Accidental release of radioactivity 

detected onsite only

02/19/1962 LLNL NNSS U9g Shaft

213

Cimarron 

Drillback release of radioactivity 

detected onsite only

02/23/1962 LLNL NNSS U9h Shaft

214

Platypus

Accidental release of radioactivity 

detected onsite only

02/24/1962 LANL NNSS U3ad Shaft

215

Pampas 

Accidental and drillback release of 

radioactivity detected offsite

03/01/1962 LANL/UK NNSS U3al Shaft

216

Danny Boy

Crater diameter 265 ft, depth 84 ft 

in basalt

Radioactivity detected offsite

03/05/1962 LLNL/DoD NNSS U18a Crater

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
21

Operation Nougat – Continued

16:30:00.13 37.048350 -116.034526 4,028 -240 Safety Experiment Low 217

18:00:00.21 37.122117 -116.049750 4,201 -840 Weapons Related 8.4 kt 218

16:30:00.13 37.043914 -116.031904 4,019 -788 Weapons Related Low 219

18:00:00.16 37.124271 -116.034746 4,235 -614 Weapons Related 3.4 kt 220

18:00:00.13 37.046862 -116.037770 4,026 -448 Weapons Related Low 221

18:00:00.13 37.044458 -116.024402 4,016 -856 Weapons Related 10.6 kt 222

18:00:00.16 37.117628 -116.044882 4,183 -766 Weapons Related Low 223

18:00:00.16 37.127131 -116.045737 4,200 -495 Weapons Related

Low

224

18:00:00.13 37.221976 -116.158313 6,281 -631 Weapons Related 1.85 kt 225

18:40:00.16 37.118958 -116.032393 4,261 -635 Weapons Related Low 226

and elsewhere in the Pacific, were conducted as part of Operation Dominic.

15:46:00.00 1.565000 -157.365000 0 2,900 Weapons Related 190 kt 227

16:02:00.00 1.565000 -157.365000 0 2,610 Weapons Related 410 kt 228

18:00:00.16 37.118411 -116.038640 4,217 -714 Weapons Related Low 229

18:01:00.00 1.500000 -157.277000 0 5,030 Weapons Related 1.09 Mt 230

19:04:00.00 1.565000 -157.365000 0 5,230 Weapons Related 670 kt 231

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

20

Operation Nougat – Continued

217

Ermine

Drillback release of radioactivity 

detected onsite only

03/06/1962 LANL NNSS U3ab Shaft

218

Brazos 

Accidental and drillback release of 

radioactivity detected onsite only

03/08/1962 LLNL NNSS U9d Shaft

219

Hognose 

Drillback release of radioactivity 

detected onsite only

03/15/1962 LANL NNSS U3ai Shaft

220

Hoosic 

Drillback release of radioactivity 

detected onsite only

03/28/1962 LLNL NNSS U9j Shaft

221

Chinchilla II 

Accidental and drillback release of 

radioactivity detected onsite only

03/31/1962 LANL NNSS U3as Shaft

222

Dormouse Prime 

Drillback release of radioactivity 

detected onsite only

04/05/1962 LANL NNSS U3az Shaft

223

Passaic 

Drillback release of radioactivity 

detected onsite only

04/06/1962 LLNL NNSS U9l Shaft

224

Hudson 

Drillback release of radioactivity 

detected onsite only

04/12/1962 LLNL NNSS U9n Shaft

225

Platte

Accidental release of radioactivity 

detected offsite

04/14/1962 LLNL NNSS U12k.01 Tunnel

226

Dead 

Drillback release of radioactivity 

detected onsite only

04/21/1962 LLNL NNSS U9k00 Shaft

Note: Tests that were conducted during 1962 in Christmas and Johnston Island areas, 

227 Adobe

Operation Dominic 04/25/1962 LANL Christmas Island area

- - - - Airdrop

228 Aztec

Operation Dominic 04/27/1962 LANL Christmas Island 

area

- - - - Airdrop

229

Black 

Drillback release of radioactivity 

detected onsite only

04/27/1962 LLNL NNSS U9p Shaft

230 Arkansas

Operation Dominic 05/02/1962 LLNL Christmas Island 

area

- - - - Airdrop

231 Questa

Operation Dominic 05/04/1962 LANL Christmas Island area

- - - - Airdrop

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
23

Operation Nougat – Continued

23:30:00.00 4.833333 -149.416667 0 11,000 Weapons Related 200 to 1000 kt 232

19:33:00.14 37.046518 -116.025875 4,021 -848 Weapons Related Low 233

18:01:00.00 1.565000 -157.365000 0 2,880 Weapons Related 100 kt 234

17:01:00.00 1.565000 -157.365000 0 2,450 Weapons Related 100 kt 235

15:00:00.16 37.127539 -116.049168 4,204 -546 Weapons Related Low 236

15:37:00.00 1.565000 -157.365000 0 2,995 Weapons Related 50 kt 237

20:02:00.00 31.233333 -124.216667 0 - - - - Weapons Effects Low 238

17:02:00.00 1.565000 -157.365000 0 5,510 Weapons Related 500 kt 239

19:00:00.10 37.065145 -116.031247 4,071 -1,424 Weapons Related 40 kt 240

15:21:00.00 1.570000 -157.365000 0 2,940 Weapons Related 97 kt 241

15:00:00.16 37.122589 -116.048079 4,200 -714 Weapons Related 4.5 kt 242

15:36:00.00 1.565000 -157.365000 0 6,945 Weapons Related 73 kt 243

15:00:00.15 37.124812 -116.052860 4,201 -632 Weapons Related Low 244

16:08:00.00 1.550000 -157.350000 0 9,030 Weapons Related 2.6 kt 245

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

22

Operation Nougat – Continued

232

Frigate Bird

Operation Dominic

North 4 degrees 50 minutes, 

West 149 degrees 25 minutes

11,000 ft altitude

W47 warhead on a Polaris A1 missile 

launched from the USS Ethan Allen 

(SSB-608) as part of the system 

proof test

05/06/1962 LLNL/DoD Pacific - - - - Rocket

233

Paca 

Accidental and drillback release of 

radioactivity detected onsite only

05/07/1962 LANL NNSS U3ax Shaft

234 Yukon

Operation Dominic 05/08/1962 LLNL Christmas Island 

area

- - - - Airdrop

235 Mesilla

Operation Dominic 05/09/1962 LANL Christmas Island area

- - - - Airdrop

236

Arikaree 

Drillback release of radioactivity 

detected onsite only

05/10/1962 LLNL NNSS U9r Shaft

237 Muskegon

Operation Dominic 05/11/1962 LLNL Christmas Island area

- - - - Airdrop

238

Swordfish

Operation Dominic

North 31 degrees 14 minutes, 

West 124 degrees 13 minutes

Antisubmarine rocket (ASROC-W44) 

system proof test

05/11/1962 LANL/DoD Pacific - - - - Underwater

239 Encino

Operation Dominic 05/12/1962 LANL Christmas Island area

- - - - Airdrop

240

Aardvark 

Accidental and drillback release of 

radioactivity detected onsite only

05/12/1962 LANL NNSS U3amS Shaft

241 Swanee

Operation Dominic 05/14/1962 LLNL Christmas Island area

- - - - Airdrop

242

Eel 

Accidental release of radioactivity 

detected offsite

05/19/1962 LLNL NNSS U9m Shaft

243 Chetco

Operation Dominic 05/19/1962 LLNL Christmas Island area

- - - - Airdrop

244

White 

Drillback release of radioactivity 

detected onsite only

05/25/1962 LLNL NNSS U9b Shaft

245 Tanana

Operation Dominic 05/25/1962 LLNL Christmas Island area

- - - - Airdrop

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
25

Operation Nougat – Continued

17:02:00.00 1.550000 -157.350000 0 7,140 Weapons Related 43 kt 246

17:00:00.14 37.045566 -116.035331 4,021 -539 Weapons Related Low 247

17:00:00.12 37.045669 -116.040155 4,022 -860 Weapons Related Low 248

17:02:00.00 1.380000 -157.195000 0 8,865 Weapons Related 782 kt 249

15:37:00.00 1.490000 -157.327000 0 6,970 Weapons Related 210 kt 250

16:01:00.00 1.380000 -157.195000 0 8,325 Weapons Related 3 Mt 251

15:37:00.00 1.470000 -157.195000 0 13,645 Weapons Related 1.2 Mt 252

21:00:00.12 37.222177 -116.163010 6,312 -660 Weapons Related 2.9 kt 253

16:00:00.00 1.470000 -157.195000 0 9,105 Weapons Related 800 kt 254

16:00:00.00 1.490000 -157.327000 0 9,090 Weapons Related 52 kt 255

15:01:00.00 1.470000 -157.320000 0 14,995 Weapons Related 2.2 kt 256

17:00:00.13 37.043017 -116.031123 4,016 -854 Weapons Related Low 257

16:00:00.00 1.550000 -157.350000 0 9,011 Weapons Related 81.5 kt 258

15:19:00.00 1.230000 -157.220000 0 11,810 Weapons Related 7.65 Mt 259

18:00:00.12 37.041549 -116.036114 4,014 -1,340 Weapons Related 67 kt 260

17:00:00.11 37.009057 -116.201913 6,422 -1,020 Weapons Effects Low 261

15:21:00.00 1.380000 -157.195000 0 4,980 Weapons Related 1.27 Mt 262

21:30:00.16 37.117366 -116.048287 4,177 -489 Weapons Related Low 263

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

24

Operation Nougat – Continued

246 Nambe

Operation Dominic 05/27/1962 LANL Christmas Island 

area

- - - - Airdrop

247 Raccoon  06/01/1962 LANL NNSS U3ajS Shaft

248

Packrat 

Drillback release of radioactivity 

detected onsite only

06/06/1962 LANL NNSS U3aw Shaft

249 Alma

Operation Dominic 06/08/1962 LANL Christmas Island area

- - - - Airdrop

250 Truckee

Operation Dominic 06/09/1962 LLNL Christmas Island 

area

- - - - Airdrop

251 Yeso

Operation Dominic 06/10/1962 LANL Christmas Island area

- - - - Airdrop

252 Harlem

Operation Dominic 06/12/1962 LLNL Christmas Island 

area

- - - - Airdrop

253

Des Moines

Accidental release of radioactivity 

detected offsite

06/13/1962 LLNL NNSS U12j.01 Tunnel

254 Rinconada

Operation Dominic 06/15/1962 LANL Christmas Island 

area

- - - - Airdrop

255 Dulce

Operation Dominic 06/17/1962 LANL Christmas Island area

- - - - Airdrop

256 Petit

Operation Dominic 06/19/1962 LLNL Christmas Island 

area

- - - - Airdrop

257

Daman I 

Drillback release of radioactivity 

detected onsite only

06/21/1962 LANL NNSS U3be Shaft

258 Otowi

Operation Dominic 06/22/1962 LANL Christmas Island 

area

- - - - Airdrop

259 Bighorn

Operation Dominic 06/27/1962 LLNL Christmas Island area

- - - - Airdrop

260

Haymaker 

Accidental and drillback release of 

radioactivity detected onsite only

06/27/1962 LANL NNSS U3auS Shaft

261

Marshmallow

Accidental release of radioactivity 

detected onsite only

06/28/1962 LLNL/DoD NNSS U16a Tunnel

262 Bluestone

Operation Dominic 06/30/1962 LLNL Christmas Island 

area

- - - - Airdrop

263

Sacramento 

Drillback release of radioactivity 

detected onsite only

06/30/1962 LLNL NNSS U9v Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
27

Operation Storax

17:00:00.15 37.176960 -116.046256 4,317 -635 Plowshare 104 kt 264

These tests were conducted as Operation Sunbeam.

17:00:00.00 37.119142 -116.303697 5,136 3 Weapons Effects Low 265

These tests were conducted as Operation Fishbowl.

09:00:00.00 16.468422 -169.630075 0 250 miles Weapons Effects 1.4 Mt 266

16:33:00.00 1.520000 -157.280000 0 5,000 Weapons Related 1 Mt 267

15:37:00.00 1.230000 -157.180000 0 14,330 Weapons Related 3.88 Mt 268

16:45:00.09 37.112150 -116.333947 5,066 -23 Weapons Effects 500 tons 269

16:00:00.15 37.055018 -116.034262 4,041 -1,356 Weapons Related Intermediate 270

18:30:00.00 36.802465 -115.925910 3,078 10 Weapons Effects Low 271

17:00:00.00 37.109551 -116.318154 5,178 3 Weapons Effects Low 272

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

26

Operation Storax

264

Sedan

Excavation experiment 

Crater 1,280 ft diameter, 320 ft deep

Thermonuclear device with fission yield 

less than 30%

Radioactivity detected offsite

07/06/1962 LLNL NNSS U10h Crater

Note: Four DoD weapons effects tests were conducted at the NNSS in July 1962.

265

Little Feller II

Operation Sunbeam

Slightly above ground

Test of Davy Crockett

Test of the W54 nuclear weapon

Radioactivity detected onsite only

07/07/1962 SNL/DoD NNSS Area 18 Surface

Note: Five DoD high-altitude weapons effects tests were conducted during Operation Dominic. 

266

Starfish Prime

Operation Fishbowl

High altitude - 250 miles

07/09/1962 LANL/DoD Johnston Island 

area

- - - - Rocket

267 Sunset

Operation Dominic 07/10/1962 LANL Christmas Island area

- - - - Airdrop

268 Pamlico

Operation Dominic 07/11/1962 LLNL Christmas Island 

area

- - - - Airdrop

269

Johnnie Boy

Operation Sunbeam

Slightly below ground

Radioactivity detected offsite

07/11/1962 LLNL/DoD NNSS U18j2 Crater

270

Merrimac 

Accidental and drillback release of 

radioactivity detected onsite only

07/13/1962 LLNL NNSS U3bd Shaft

271

Small Boy

Operation Sunbeam 

Slightly above ground

With modern survey and GPS, it was 

discovered this test was actually 

conducted approximately 300 ft east of 

the Area 5 boundary; however, it is 

counted as an NNSS test

Radioactivity detected offsite

07/1024/1962 LANL/DoD NNSS Area 5 Tower

272

Little Feller I

Operation Sunbeam

Slightly above ground

Test of Davy Crockett

Test of the W54 nuclear weapon

Last atmospheric test conducted at 

the NNSS

Radioactivity detected offsite

07/17/1962 SNL/DoD NNSS Area 18 Surface

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
29

Operation Storax – Continued

21:00:00.16 37.129666 -116.057353 4,239 -493 Weapons Related Low 273

15:00:00.15 37.118588 -116.040353 4,208 -743 Weapons Related Low 274

17:00:00.13 37.046097 -116.024707 4,021 -676 Weapons Related Low 275

17:00:00.20 37.130265 -116.045605 4,204 -513 Weapons Related Low 276

17:10:00.12 37.043888 -116.021981 4,017 -711 Weapons Related Low 277

17:00:00.12 37.054996 -116.030153 4,043 -792 Weapons Related Low 278

17:00:00.15 37.116630 -116.033647 4,258 -692 Weapons Related Low 279

16:18:00.00 13.830000 -172.083000 0 10,260 Weapons Related 75 kt 280

17:00:00.16 37.139355 -116.051195 4,234 -1,622 Weapons Related 115 kt 281

16:03:00.00 14.670000 -168.250000 0 9,900 Weapons Related 11.3 kt 282

15:00:00.16 37.122688 -116.051680 4,198 -580 Weapons Related Low 283

17:00:00.12 37.048734 -116.033427 4,027 -241 Weapons Related Low 284

15:00:00.15 37.128502 -116.041116 4,203 -195 Weapons Related Low 285

16:01:00.00 14.670000 -168.750000 0 11,970 Weapons Related 1.59 Mt 286

18:00:00.08 37.039493 -116.022015 4,008 -792 Weapons Related 12.5 kt 287

08:30:00.00 16.072381 -169.609986 0 tens of miles Weapons Effects Low 288

09:59:00.00 16.468422 -169.630075 0 tens of miles Weapons Effects Submegaton 289

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

28

Operation Storax – Continued

273

Wichita 

Accidental release of radioactivity 

detected onsite only

07/27/1962 LLNL NNSS U9y Shaft

274

York 

Drillback release of radioactivity 

detected onsite only

08/24/1962 LLNL NNSS U9z Shaft

275

Bobac 

Drillback release of radioactivity 

detected onsite only

08/24/1962 LANL NNSS U3bl Shaft

276

Raritan 

Drillback release of radioactivity 

detected onsite only

09/06/1962 LLNL NNSS U9u Shaft

277

Hyrax 

Drillback release of radioactivity 

detected onsite only

09/14/1962 LANL NNSS U3bh Shaft

278 Peba  09/20/1962 LANL NNSS U3bb Shaft

279

Allegheny 

Accidental and drillback release of 

radioactivity detected onsite only

09/29/1962 LLNL NNSS U9x Shaft

280 Androscoggin

Operation Dominic 10/02/1962 LLNL Johnston Island 

area

- - - - Airdrop

281

Mississippi 

Drillback release of radioactivity 

detected onsite only

10/05/1962 LLNL NNSS U9ad Shaft

282 Bumping

Operation Dominic 10/06/1962 LLNL Johnston Island 

area

- - - - Airdrop

283

Roanoke 

Accidental and drillback release of 

radioactivity detected onsite only

10/12/1962 LLNL NNSS U9q Shaft

284

Wolverine

Accidental release of radioactivity 

detected onsite only

10/12/1962 LANL NNSS U3av Shaft

285 Tioga 10/18/1962 LLNL NNSS U9f Shaft

286 Chama

Operation Dominic 10/18/1962 LANL Johnston Island 

area

- - - - Airdrop

287

Bandicoot 

Accidental release of radioactivity 

detected offsite

10/19/1962 LANL NNSS U3bj Shaft

288

Checkmate

Operation Fishbowl

High altitude – tens of miles

10/20/1962 LANL/DoD Johnston Island 

area

- - - - Rocket

289

Bluegill 3 Prime

Operation Fishbowl

High altitude – tens of miles

10/26/1962 LANL/DoD Johnston Island 

area

- - - - Rocket

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
31

Operation Storax – Continued

15:00:00.15 37.149260 -116.054375 4,254 -1,048 Weapons Related Low 290

15:46:00.00 14.700000 -168.417000 0 11,780 Weapons Related 800 kt 291

16:01:00.00 13.613333 -172.216667 0 12,130 Weapons Related 8.3 Mt 292

12:10:00.00 16.113503 -169.680561 0 tens of miles Weapons Effects Submegaton 293

07:30:00.00 16.707419 -169.542406 0 tens of miles Weapons Effects Low 294

18:00:00.16 37.163767 -116.074164 4,384 -546 Weapons Related Low 295

16:30:00.08 37.041705 -116.024740 4,010 -792 Weapons Related Low 296

18:00:00.14 37.122762 -116.029888 4,268 -747 Plowshare 5.2 kt 297

16:00:00.15 37.128037 -116.050875 4,209 -749 Weapons Related Low 298

19:00:00.10 37.051697 -116.030177 4,033 -993 Joint US-UK Low 299

17:25:00.12 37.168631 -116.206954 7,477 -1,320 Weapons Related Low 300

18:45:00.12 37.046058 -116.016476 4,030 -761 Weapons Related Low 301

18:00:00.16 37.124194 -116.040829 4,202 -196 Weapons Related Low 302

16:00:00.16 37.148826 -116.052745 4,247 -994 Weapons Related Low 303

16:00:01.15 37.125912 -116.039518 4,208 -200 Weapons Related Low 304

18:30:00.13 37.058292 -116.030132 4,052 -1,069 Weapons Related Low 305

18:30:00.14 37.046085 -116.021966 4,022 -856 Weapons Related Low 306

17:00:00.13 37.048966 -116.032619 4,028 -195 Safety Experiment Low 307

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

30

Operation Storax – Continued

290

Santee 

Drillback release of radioactivity 

detected onsite only

10/27/1962 LLNL NNSS U10f Shaft

291 Calamity

Operation Dominic 10/27/1962 LLNL Johnston Island area

- - - - Airdrop

292 Housatonic

Operation Dominic 10/30/1962 LLNL Johnston Island area

- - - - Airdrop

293

Kingfish

Operation Fishbowl

High altitude – tens of miles

11/01/1962 LANL/DoD Johnston Island 

area

- - - - Rocket

294

Tightrope

Operation Fishbowl

High altitude – tens of miles

11/04/1962 LANL/DoD Johnston Island 

area

- - - - Rocket

295

St. Lawrence

Accidental and drillback release of 

radioactivity detected onsite only

11/09/1962 LLNL NNSS U2b Shaft

296 Gundi  11/15/1962 LANL NNSS U3bm Shaft

297

Anacostia 

Device development 

Accidental and drillback release of 

radioactivity detected onsite only

11/27/1962 LLNL NNSS U9i Shaft

298

Taunton 

Drillback release of radioactivity 

detected onsite only

12/04/1962 LLNL NNSS U9aa Shaft

299 Tendrac  12/07/1962 LANL/UK NNSS U3ba Shaft

300

Madison

Drillback release of radioactivity 

detected onsite only

12/12/1962 LLNL NNSS U12g.01 Tunnel

301

Numbat 

Drillback release of radioactivity 

detected onsite only

12/12/1962 LANL NNSS U3bu Shaft

302

Manatee

Drillback release of radioactivity 

detected onsite only

12/14/1962 LLNL NNSS U9af Shaft

303

Casselman 

Drillback release of radioactivity 

detected onsite only

02/08/1963 LLNL NNSS U10g Shaft

304 Hatchie 02/08/1963 LLNL NNSS U9e Shaft

305 Ferret 02/08/1963 LANL NNSS U3bf Shaft

306 Acushi  02/08/1963 LANL NNSS U3bg Shaft

307 Chipmunk 02/15/1963 LANL NNSS U3ay Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
33

Operation Storax – Continued

19:47:00.14 37.120269 -116.046582 4,187 -745 Plowshare 3 kt 308

19:47:08.63 37.154760 -116.080754 4,390 -536 Weapons Related Low 309

19:00:00.12 37.044463 -116.027363 4,016 -988 Weapons Related Low 310

16:22:53.14 37.125782 -116.045645 4,197 -429 Weapons Related Low 311

15:49:00.12 37.041675 -116.019265 4,012 -917 Weapons Related Low 312

17:52:00.13 37.037310 -116.024781 4,002 -792 Weapons Related Low 313

16:01:30.12 37.048763 -116.031182 4,028 -245 Safety Experiment Low 314

16:03:00.16 37.156630 -116.071834 4,352 -745 Weapons Related Low 315

16:09:30.14 37.120549 -116.037147 4,225 -597 Weapons Related Low 316

16:09:30.14 37.120479 -116.037045 4,225 -190 Weapons Related Low 317

18:19:00.00 37.049351 -116.016455 4,043 -892 Weapons Related Low 318

These tests were conducted during May and June 1963 as the joint US-UK Operation Roller Coaster.

09:55:00.00 37.706091 -116.988191 4,972 1 Joint US-UK Zero 319

14:55:00.00 37.043860 -116.016502 4,022 -792 Weapons Related Low 320

14:55:00.00 37.048291 -116.033225 4,026 -245 Safety Experiment Low 321

15:40:00.14 37.111002 -116.039936 4,213 -1,290 Weapons Related Intermediate 322

11:17:00.00 37.708495 -116.657860 5,380 1 Joint US-UK Zero 323

15:03:30.16 37.128027 -116.044289 4,198 -692 Weapons Related Low 324

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

32

Operation Storax – Continued

308

Kaweah 

Device development

Drillback release of radioactivity 

detected onsite only

02/21/1963 LLNL NNSS U9ab Shaft

309

Carmel 

Drillback release of radioactivity 

detected onsite only

02/21/1963 LLNL NNSS U2h Shaft

310 Jerboa  03/01/1963 LANL NNSS U3at Shaft

311

Toyah 

Drillback release of radioactivity 

detected onsite only

03/15/1963 LLNL NNSS U9ac Shaft

312 Gerbil  03/29/1963 LANL NNSS U3bp Shaft

313 Ferret Prime  04/05/1963 LANL NNSS U3by Shaft

314 Coypu 04/10/1963 LANL NNSS U3af Shaft

315

Cumberland 

Drillback release of radioactivity 

detected onsite only

04/11/1963 LLNL NNSS U2e Shaft

316

Kootanai 

Accidental and drillback release of 

radioactivity detected onsite only

04/24/1963 LLNL NNSS U9w Shaft

317

Paisano 

Accidental release of radioactivity 

detected onsite only

04/24/1963 LLNL NNSS U9w1 Shaft

318 Gundi Prime  05/09/1963 LANL NNSS U3db Shaft

Note: Four storage-transportation tests were conducted on the Nevada Test and Training Range.

319

Double Tracks 

Operation Roller Coaster

(Storage-Transportation)

Plutonium dispersal

Radioactivity detected outside 

withdrawn land off the NTTR

05/15/1963 LANL/DoD/UK NTTR - - - - Surface

320 Harkee  05/17/1963 LANL NNSS U3bv Shaft

321 Tejon 05/17/1963 LANL NNSS U3cg Shaft

322

Stones 

Drillback release of radioactivity 

detected onsite only

05/22/1963 LANL NNSS U9ae Shaft

323

Clean Slate I

Operation Roller Coaster

(Storage-Transportation)

Plutonium dispersal

Radioactivity detected outside 

withdrawn land off the NTTR

05/25/1963 LANL/DoD/UK NTTR - - - - Surface

324

Pleasant 

Accidental and drillback release of 

radioactivity detected onsite only

05/29/1963 LLNL NNSS U9ah Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
35

Operation Storax – Continued

10:47:00.00 37.761125 -116.614428 5,390 1 Joint US-UK Zero 325

17:00:00.12 37.196527 -116.210043 7,438 -796 Weapons Related 3.1 kt 326

14:00:00.13 37.044236 -116.037230 4,019 -442 Weapons Related Low 327

16:58:00.15 37.124606 -116.040853 4,204 -292 Weapons Related Low 328

10:33:00.00 37.759156 -116.681135 5,387 1 Joint US-UK Zero 329

14:10:00.13 37.046073 -116.019218 4,026 -642 Weapons Related Low 330

23:00:00.15 37.131351 -116.068934 4,275 -742 Weapons Related Low 331

Operation Niblick

23:45:00.13 37.041660 -116.016517 4,015 -992 Weapons Related Low 332

13:00:00.15 37.154044 -116.077499 4,373 -738 Weapons Related Low 333

13:20:00.14

13:20:00.15

37.124914

37.124913

-116.036257

-116.036120

4,267

4,227

-836

-194

Weapons Related

Weapons Related

Low

Low

334

13:53:00.15 37.163323 -116.081512 4,419 -742 Weapons Related Low 335

17:00:00.13 37.060371 -116.022530 4,074 -2,344 Weapons Related 249 kt 336

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

34

Operation Storax – Continued

325

Clean Slate II

Operation Roller Coaster 

(Storage-Transportation)

Plutonium dispersal

Radioactivity not detected outside 

withdrawn land off the NTTR

05/31/1963 LANL/DoD/UK NTTR - - - - Surface

326

Yuba

Accidental release of radioactivity 

detected onsite only

Accidental and drillback release of 

radioactivity detected offsite

06/05/1963 LLNL NNSS U12b.10 Tunnel

327 Hutia  06/06/1963 LANL NNSS U3bc Shaft

328

Apshapa

Accidental and drillback release of 

radioactivity detected onsite only

06/06/1963 LLNL NNSS U9ai Shaft

329

Clean Slate III

Last atmospheric test conducted by the 

United States

Operation Roller Coaster

(Storage-Transportation)

Plutonium dispersal 

Radioactivity detected outside 

withdrawn land off the NTTR

06/09/1963 LANL/DoD/UK NTTR - - - - Surface

330 Mataco  06/14/1963 LANL NNSS U3bk Shaft

331

Kennebec 

Accidental and drillback release of 

radioactivity detected onsite only

06/25/1963 LLNL NNSS U2af Shaft

Operation Niblick

332

Pekan 

Drillback release of radioactivity 

detected onsite only

08/12/1963 LANL NNSS U3bw Shaft

333 Satsop  08/15/1963 LLNL NNSS U2g Shaft

334

Kohocton

Natches

Simultaneous, separate holes

Kohocton: Drillback release of 

radioactivity detected onsite only

08/23/1963

08/23/1963

LLNL

LLNL

NNSS

NNSS

U9ak

U9ak1

Shaft

Shaft

335

Ahtanum 

Drillback release of radioactivity 

detected onsite only

09/13/1963 LLNL NNSS U2l Shaft

336

Bilby 

First underground test reported felt in 

Las Vegas, Nevada

Drillback release of radioactivity 

detected onsite only

09/13/1963 LANL NNSS U3cn Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
37

Operation Niblick – Continued

14:20:00.13 37.037266 -116.016562 4,002 -1,081 Weapons Related Low 337

17:30:00.15 37.154731 -116.074231 4,360 -493 Weapons Related Low 338

14:00:00.11 37.037296 -116.022040 4,002 -857 Weapons Related Low 339

21:00:00.16 37.118693 -116.034731 4,244 -491 Plowshare 380 tons 340

17:00:00.14 37.198125 -116.230391 7,414 -1,788 Weapons Related Intermediate 341

15:00:00.15 37.130761 -116.067831 4,270 -198 Safety Experiment Low 342

17:00:00.10 39.200060 -118.381210 5,250 -1,211 Vela Uniform 12 kt 343

16:00:00.12 37.039478 -116.019280 4,007 -854 Weapons Related Low 344

15:00:00.15 37.132248 -116.047757 4,212 -544 Weapons Related Low 345

17:30:00.15 37.119274 -116.046042 4,182 -988 Weapons Related Intermediate 346

16:38:30.13

16:38:30.13

37.043839

37.039537

-116.013076

-116.030248

4,031

4,007

-864

-860

Weapons Related

Weapons Related

Low

Low

347

16:02:00.15 37.130971 -116.044749 4,203 -541 Weapons Related 5.3 kt 348

15:24:00.13 37.052743 -116.034247 4,035 -1,359 Weapons Related Low 349

16:00:00.15 37.142233 -116.049975 4,231 -1,611 Weapons Related 20 to 200 kt 350

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

36

Operation Niblick – Continued

337

Carp

Accidental and drillback release of 

radioactivity detected onsite only

09/27/1963 LANL NNSS U3cb Shaft

338

Narraguagus 

Drillback release of radioactivity 

detected onsite only

09/27/1963 LLNL NNSS U2f Shaft

339

Grunion 

Drillback release of radioactivity 

detected onsite only

10/11/1963 LANL NNSS U3bz Shaft

340

Tornillo 

Device development

Drillback release of radioactivity 

detected onsite only

10/11/1963 LLNL NNSS U9aq Shaft

341

Clearwater

Drillback release of radioactivity 

detected onsite only

10/16/1963 LLNL NNSS U12q Shaft

342 Mullet 10/17/1963 LLNL NNSS U2ag Shaft

343

Shoal

Nuclear test detection-research 

experiment

Drillback release of radioactivity 

detected onsite only

10/26/1963 LANL/DoD near Fallon, 

Nevada - - - - Shaft

344

Anchovy 

Accidental and drillback release of 

radioactivity detected onsite only

11/14/1963 LANL NNSS U3bq Shaft

345

Mustang 

Drillback release of radioactivity 

detected onsite only

11/15/1963 LLNL NNSS U9at Shaft

346

Greys 

Drillback release of radioactivity 

detected onsite only

11/22/1963 LLNL NNSS U9ax Shaft

347

Barracuda 

Sardine 

Simultaneous, separate holes

Barracuda, Sardine: Accidental and 

drillback release of radioactivity 

detected onsite only

12/04/1963

12/04/1963

LANL

LANL

NNSS

NNSS

U3cr

U3ch

Shaft

Shaft

348

Eagle 

Accidental and drillback release of 

radioactivity detected offsite

12/12/1963 LLNL NNSS U9av Shaft

349

Tuna

Accidental release of radioactivity 

detected onsite only

12/20/1963 LANL NNSS U3de Shaft

350

Fore 

Drillback release of radioactivity 

detected onsite only

01/16/1964 LLNL NNSS U9ao Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
39

Operation Niblick – Continued

16:00:00.15 37.126372 -116.037164 4,221 -868 Weapons Related 10.5 kt 351

16:00:00.15 37.136163 -116.071528 4,296 -592 Weapons Related Less than 20 kt 352

15:38:00.12 37.056564 -116.030109 4,046 -493 Weapons Related Less than 20 kt 353

15:30:00.15 37.131968 -116.033210 4,254 -743 Weapons Related Less than 20 kt 354

15:37:19.12 37.059338 -116.034192 4,050 -987 Weapons Related Less than 20 kt 355

15:37:37.12 37.095580 -116.051591 4,145 -1,095 Weapons Related Less than 20 kt 356

15:30:00.15 37.150838 -116.040983 4,266 -1,613 Plowshare 70 kt 357

15:00:00.01 37.129888 -116.037207 4,225 -471 Weapons Related Less than 20 kt 358

16:02:00.12 37.050421 -116.012330 4,060 -376 Weapons Related Less than 20 kt 359

14:40:00.15 37.128878 -116.030698 4,274 -670 Weapons Related Less than 20 kt 360

14:30:00.12 37.043873 -116.019236 4,019 -491 Weapons Related Less than 20 kt 361

15:29:52.28 37.119437 -116.034762 4,238 -391 Weapons Related Less than 20 kt 362

20:10:00.15 37.149544 -116.056260 4,322 -1,661 Weapons Related 20 to 200 kt 363

20:47:00.12 37.039520 -116.027503 4,006 -859 Weapons Related Less than 20 kt 364

13:00:00.15 37.120213 -116.041167 4,200 -486 Weapons Related Less than 20 kt 365

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

38

Operation Niblick – Continued

351

Oconto 

Drillback release of radioactivity 

detected offsite by aircraft only

01/23/1964 LLNL NNSS U9ay Shaft

352

Club 

Accidental and drillback release of 

radioactivity detected onsite only

01/30/1964 LLNL NNSS U2aa Shaft

353

Solendon 

Accidental release of radioactivity 

detected onsite only

02/12/1964 LANL NNSS U3cz Shaft

354

Bunker 

Accidental and drillback release of 

radioactivity detected onsite only

02/13/1964 LLNL NNSS U9bb Shaft

355

Bonefish 

Drillback release of radioactivity 

detected onsite only

02/18/1964 LANL NNSS U3bt Shaft

356 Mackerel 02/18/1964 LANL NNSS U4b Shaft

357

Klickitat 

Device development

Drillback release of radioactivity 

detected onsite only

02/20/1964 LLNL NNSS U10e Shaft

358

Handicap 

Accidental and drillback release of 

radioactivity detected onsite only

03/12/1964 LLNL NNSS U9ba Shaft

359

Pike 

Accidental release of radioactivity 

detected offsite

03/13/1964 LANL NNSS U3cy Shaft

360

Hook 

Accidental and drillback release of 

radioactivity detected onsite only

04/14/1964 LLNL NNSS U9bc Shaft

361

Sturgeon 

Drillback release of radioactivity 

detected onsite only

04/15/1964 LANL NNSS U3bo Shaft

362

Bogey 

Accidental and drillback release of 

radioactivity detected onsite only

04/17/1964 LLNL NNSS U9au Shaft

363

Turf 

Drillback release of radioactivity 

detected onsite only

04/24/1964 LLNL NNSS U10c Shaft

364

Pipefish 

Accidental release of radioactivity 

detected onsite only

04/29/1964 LANL NNSS U3co Shaft

365

Driver

Accidental and drillback release of 

radioactivity detected onsite only

05/07/1964 LLNL NNSS U9ar Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
41

Operation Niblick – Continued

14:40:00.15 37.117305 -116.039815 4,213 -536 Weapons Related Less than 20 kt 366

16:15:00.12 37.041639 -116.013094 4,022 -792 Weapons Related Less than 20 kt 367

16:45:00.15 37.148555 -116.076866 4,353 -874 Plowshare 3 kt 368

14:01:00.10 37.038898 -116.013121 4,039 -632 Weapons Related Less than 20 kt 369

13:30:00.20 37.165947 -116.039283 4,312 -1,466 Weapons Related Less than 20 kt 370

13:30:00.14 37.111087 -116.029646 4,288 -673 Weapons Related Less than 20 kt 371

13:33:00.14 37.174380 -116.057265 4,293 -848 Plowshare 11.7 kt 372

Operation Whetstone

13:15:00.15 37.182162 -116.046217 4,335 -1,282 Weapons Related 20 to 200 kt 373

17:18:30.03 37.017564 -116.030428 3,975 -891 Joint US-UK Less than 20 kt 374

13:30:00.15 37.113711 -116.032882 4,265 -395 Weapons Related Less than 20 kt 375

18:30:00.04 37.046036 -116.013053 4,039 -633 Weapons Related Less than 20 kt 376

16:00:00.14 37.158968 -116.083968 4,420 -545 Weapons Related 4.4 kt 377

22:17:00.06 37.065281 -116.016319 4,113 -1,469 Weapons Related Less than 20 kt 378

14:30:00.15 37.117311 -116.041530 4,201 -296 Safety Experiment Less than 20 kt 379

17:06:00.04 37.066970 -116.023153 4,097 -1,193 Weapons Related Less than 20 kt 380

18:15:00.08 37.017527 -116.023574 3,975 -856 Weapons Related Less than 20 kt 381

14:00:00.10 37.113676 -116.026366 4,316 -590 Weapons Related Less than 20 kt 382

17:02:00.03 37.072423 -116.016258 4,148 -1,178 Joint US-UK Zero 383

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

40

Operation Niblick – Continued

366

Backswing 

Accidental and drillback release of 

radioactivity detected onsite only

05/14/1964 LLNL NNSS U9aw Shaft

367 Minnow  05/15/1964 LANL NNSS U3cv Shaft

368

Ace 

Device development

Accidental and drillback release of 

radioactivity detected onsite only

06/11/1964 LLNL NNSS U2n Shaft

369 Bitterling  06/12/1964 LANL NNSS U3cu Shaft

370

Duffer 

Drillback release of radioactivity 

detected onsite only

06/18/1964 LLNL NNSS U10dS Shaft

371

Fade 

Accidental and drillback release of 

radioactivity detected onsite only

06/25/1964 LLNL NNSS U9be Shaft

372

Dub 

Device development 

Accidental and drillback release of 

radioactivity detected onsite only

06/30/1964 LLNL NNSS U10a Shaft

Operation Whetstone

373

Bye 

Drillback release of radioactivity 

detected onsite only

07/16/1964 LLNL NNSS U10i Shaft

374

Cormorant

Accidental and drillback release of 

radioactivity detected onsite only

07/17/1964 LANL/UK NNSS U3df Shaft

375

Links

Accidental and drillback release of 

radioactivity detected onsite only

07/23/1964 LLNL NNSS U9bf Shaft

376 Trogon 07/24/1964 LANL NNSS U3dj Shaft

377

Alva 

Accidental and drillback release of 

radioactivity detected offsite by 

aircraft only

08/19/1964 LLNL NNSS U2j Shaft

378

Canvasback

Drillback release of radioactivity 

detected onsite only

08/22/1964 LANL NNSS U3cp Shaft

379 Player 08/27/1964 LLNL NNSS U9cc Shaft

380 Haddock 08/28/1964 LANL NNSS U3dl Shaft

381 Guanay  09/04/1964 LANL NNSS U3di Shaft

382

Spoon 

Drillback release of radioactivity 

detected onsite only

09/11/1964 LLNL NNSS U9bd Shaft

383 Courser 09/25/1964 LANL/UK NNSS U3do Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
43

Operation Whetstone – Continued

20:03:00.04 37.077878 -116.009355 4,203 -1,484 Weapons Related Less than 20 kt 384

14:00:00.12 37.151301 -116.077864 4,368 -1,331 Plowshare 38 kt 385

15:59:30.03

15:59:30.04

37.033470

37.033946

-116.025670

-116.016539

3,996

4,007

-412

-849

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

386

16:00:00.00 31.142300 -89.570000 265 -2,710 Vela Uniform 5.3 kt 387

15:00:00.94 37.116986 -116.032018 4,269 -491 Weapons Related Less than 20 kt 388

17:04:58.61 37.107161 -116.033112 4,255 -1,269 Weapons Related Less than 20 kt 389

15:00:00.11 37.174324 -116.067903 4,375 -1,322 Plowshare 12 kt 390

21:15:00.10 37.114376 -116.054313 4,195 -1,326 Weapons Related 20 to 200 kt 391

21:15:00.16

21:15:00.16

37.134236

37.134236

-116.070624

-116.070624

4,286

4,286

-725

-624

Weapons Related

Weapons Related

Less than 20 kt

3.4 kt

392

20:00:00.04 37.034775 -116.013150 4,001 -592 Weapons Related 1.3 kt 393

20:00:00.07

20:00:00.07

37.039511

37.048378

-116.024762

-116.034098

4,005

4,026

-493

-231

Weapons Related

Safety Experiment

Less than 20 kt

Less than 20 kt 394

20:10:00.10 37.177757 -116.067879 4,386 -498 Weapons Effects 2.7 kt 395

19:35:00.09 37.082661 -116.343440 5,329 -89 Plowshare 92 tons 396

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

42

Operation Whetstone – Continued

384 Auk 10/02/1964 LANL NNSS U7b Shaft

385

Par 

Isotope production and 

explosive development

Drillback release of radioactivity 

detected onsite only

10/09/1964 LLNL NNSS U2p Shaft

386

Turnstone

Barbel 

Simultaneous, separate holes

Barbel: Drillback release of radioactivity 

detected onsite only

10/16/1964

10/16/1964

LANL

LANL

NNSS

NNSS

U3dt

U3bx

Shaft

Shaft

387

Salmon

Nuclear test detection 

research experiment

10/22/1964 LLNL/DoD near Hattiesburg, 

Mississippi - - - - Shaft

388 Garden 10/23/1964 LLNL NNSS U9aj Shaft

389

Forest

Drillback release of radioactivity 

detected onsite only

10/31/1964 LLNL NNSS U7a Shaft

390

Handcar

Effects of contained explosion in 

carbonate rock

Accidental and drillback release of 

radioactivity detected onsite only

11/05/1964 LLNL NNSS U10b Shaft

391

Crepe 

Drillback release of radioactivity 

detected onsite only

12/05/1964 LLNL NNSS U2q Shaft

392

Drill (Source-Lower) 

Drill (Target-Upper) 

Simultaneous, same hole

Drill (Source-Lower): Accidental and 

drillback release of radioactivity 

detected offsite

12/05/1964

12/05/1964

LLNL

LLNL

NNSS

NNSS

U2ai

U2ai

Shaft

Shaft

393

Parrot 

Accidental release of radioactivity 

detected offsite

12/16/1964 LANL NNSS U3dk Shaft

394

Cassowary

Hoopoe

Simultaneous, separate holes

12/16/1964

12/16/1964

LANL

LANL

NNSS

NNSS

U3bn

U3cf

Shaft

Shaft

395

Mudpack 

Drillback release of radioactivity 

detected onsite only

12/16/1964 LLNL/DoD NNSS U10n Shaft

396

Sulky

Excavation test of explosive buried at 

greater depth than crater-type tests in 

relation to yield

Produced mound of broken rock 

(a “retarc”) 

Radioactivity detected offsite

12/18/1964 LLNL NNSS U18d Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
45

Operation Whetstone – Continued

16:00:00.14 37.118976 -116.025639 4,310 -709 Weapons Related Less than 20 kt 397

18:22:00.03 37.044943 -116.014094 4,032 -691 Weapons Related Less than 20 kt 398

15:30:00.11 37.130698 -116.062466 4,256 -762 Weapons Related Less than 20 kt 399

15:10:29.49 37.164484 -116.077415 4,402 -738 Weapons Related 330 tons 400

17:30:00.04 37.051593 -116.024664 4,038 -972 Weapons Related 10.1 kt 401

16:18:47.15 36.817963 -115.950093 3,086 -574 Weapons Effects Less than 20 kt 402

15:28:54.11 37.117230 -116.031855 4,269 -473 Weapons Related Less than 20 kt 403

19:13:00.03 37.064465 -116.038050 4,060 -2,459 Weapons Related 20 to 200 kt 404

15:30:49.10 37.115376 -116.027364 4,307 -470 Weapons Related Less than 20 kt 405

15:34:08.16 37.147554 -116.043762 4,245 -1,775 Weapons Related 20 to 200 kt 406

21:00:00.04 37.025767 -116.023511 3,985 -1,466 Weapons Related Less than 20 kt 407

13:14:00.10 37.280320 -116.524449 6,194 -280 Plowshare 4.3 kt 408

22:00:00.03 37.007111 -116.202949 6,425 -1,000 Weapons Effects Less than 20 kt 409

13:39:00.10 37.111374 -116.031359 4,276 -462 Weapons Related Less than 20 kt 410

21:44:00.04 37.017373 -115.996175 3,991 -592 Weapons Related Less than 20 kt 411

15:47:11.15 37.140318 -116.067522 4,297 -624 Weapons Effects 7 kt 412

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

44

Operation Whetstone – Continued

397

Wool 

Drillback release of radioactivity 

detected onsite only

01/14/1965 LLNL NNSS U9bh Shaft

398

Tern 

Accidental release of radioactivity 

detected onsite only

01/29/1965 LANL NNSS U3dw Shaft

399

Cashmere 

Drillback release of radioactivity 

detected onsite only

02/04/1965 LLNL NNSS U2ad Shaft

400

Alpaca

Accidental release of radioactivity 

detected offsite

02/12/1965 LLNL NNSS U2a Shaft

401

Merlin 

Accidental release of radioactivity 

detected onsite only

02/16/1965 LANL NNSS U3ct Shaft

402

Wishbone 

Accidental and drillback release of 

radioactivity detected onsite only

02/18/1965 LLNL/DoD NNSS U5a Shaft

403

Seersucker

Accidental and drillback release of 

radioactivity detected onsite only

02/19/1965 LLNL NNSS U9bm Shaft

404

Wagtail

Drillback release of radioactivity 

detected onsite only

03/03/1965 LANL NNSS U3an Shaft

405

Suede

Drillback release of radioactivity 

detected onsite only

03/20/1965 LLNL NNSS U9bk Shaft

406

Cup 

Drillback release of radioactivity 

detected onsite only

03/26/1965 LLNL NNSS U9cb Shaft

407

Kestrel 

Drillback release of radioactivity 

detected onsite only

04/05/1965 LANL NNSS U3dd Shaft

408 Palanquin

Radioactivity detected offsite 04/14/1965 LLNL NNSS U20k Crater

409

Gum Drop

Controlled and drillback release of 

radioactivity detected onsite only

04/21/1965 LLNL/DoD NNSS U16a.02 Tunnel

410

Chenille 

Accidental and drillback release of 

radioactivity detected onsite only

04/22/1965 LLNL NNSS U9bg Shaft

411 Muscovy  04/23/1965 LANL NNSS U3dx Shaft

412

Tee 

Accidental and drillback release of 

radioactivity detected offsite

05/07/1965 LLNL NNSS U2ab Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
47

Operation Whetstone – Continued

18:15:00.10 37.242607 -116.431741 6,520 -2,282 Weapons Related Less than 20 kt 413

14:57:52.15 36.823339 -115.967700 3,137 -967 Weapons Related 750 tons 414

17:32:36.23 37.058797 -116.011408 4,098 -1,401 Weapons Related Less than 20 kt 415

13:08:52.11 37.118498 -116.028555 4,292 -933 Weapons Related Less than 20 kt 416

19:45:00.04 37.042764 -116.017885 4,016 -593 Weapons Related 1.3 kt 417

20:28:37.11 37.115727 -116.024123 4,332 -568 Weapons Related Less than 20 kt 418

16:30:00.15 36.818004 -115.956925 3,095 -632 Weapons Effects Less than 20 kt 419

17:00:00.09 37.223368 -116.057840 5,022 -364 Weapons Effects Less than 20 kt 420

Operation Flintlock

13:04:24.10 37.114951 -116.033044 4,264 -537 Weapons Related Less than 20 kt 421

13:21:08.11 37.131746 -116.067724 4,270 -440 Weapons Related Less than 20 kt 422

17:00:00.04 37.097785 -116.033872 4,213 -1,742 Weapons Related 20 to 200 kt 423

17:23:30.04 37.017616 -116.040704 3,978 -1,053 Weapons Related Less than 20 kt 424

13:43:08.15 37.112583 -116.026890 4,314 -690 Weapons Related Less than 20 kt 425

13:51:13.11 37.137259 -116.070943 4,299 -564 Weapons Related Less than 20 kt 426

20:08:00.04

20:08:00.04

37.037256

37.022945

-116.014845

-116.009829

4,005

3,975

-635

-991

Weapons Related

Weapons Effects

Less than 20 kt

Less than 20 kt

427

17:12:00.03 37.077921 -116.017582 4,172 -1,494 Joint US-UK 20 to 200 kt 428

15:08:23.10 37.110981 -116.035477 4,245 -723 Weapons Related Less than 20 kt 429

21:00:00.08 51.436120 179.179220 125 -2,297 Vela Uniform 80 kt 430

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

46

Operation Whetstone – Continued

413 Buteo 05/12/1965 LANL NNSS U20a Shaft

414 Cambric 05/14/1965 LLNL NNSS U5e Shaft

415 Scaup  05/14/1965 LANL NNSS U3daS Shaft

416

Tweed 

Drillback release of radioactivity 

detected onsite only

05/21/1965 LLNL NNSS U9bn Shaft

417 Petrel  06/11/1965 LANL NNSS U3dy Shaft

418

Organdy 

Drillback release of radioactivity 

detected onsite only

06/11/1965 LLNL NNSS U9bo Shaft

419

Diluted Waters 

Accidental release of radioactivity 

detected offsite

06/16/1965 LLNL/DoD NNSS U5b Shaft

420

Tiny Tot

Accidental release of radioactivity 

detected onsite only

06/17/1965 LLNL/DoD NNSS U15e Tunnel

Operation Flintlock

421

Izzer 

Drillback release of radioactivity 

detected onsite only

07/16/1965 LLNL NNSS U9bp Shaft

422

Pongee

Accidental and drillback release of 

radioactivity detected onsite only

07/22/1965 LLNL NNSS U2ah Shaft

423

Bronze 

Drillback release of radioactivity 

detected onsite only

07/23/1965 LANL NNSS U7f Shaft

424 Mauve  08/06/1965 LANL NNSS U3dp Shaft

425

Ticking

Drillback release of radioactivity 

detected onsite only

08/21/1965 LLNL NNSS U9bj Shaft

426

Centaur 

Accidental and drillback release of 

radioactivity detected onsite only

08/27/1965 LLNL NNSS U2ak Shaft

427

Moa 

Screamer 

Simultaneous, separate holes

Screamer: Accidental release of 

radioactivity detected onsite only

09/01/1965

09/01/1965

LANL

LANL

NNSS

NNSS

U3ed

U3dg

Shaft

Shaft

428 Charcoal  09/10/1965 LANL/UK NNSS U7g Shaft

429

Elkhart 

Drillback release of radioactivity 

detected onsite only

09/17/1965 LLNL NNSS U9bs Shaft

430 Long Shot

Nuclear test detection experiment 10/29/1965 LANL/DoD Amchitka, Alaska - - - - Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
49

Operation Flintlock – Continued

18:00:00.05 37.049936 -116.022961 4,033 -791 Weapons Related Less than 20 kt 431

18:17:32.10 37.161846 -116.071790 4,368 -644 Weapons Related Less than 20 kt 432

15:13:02.10 37.164690 -116.053221 4,273 -2,227 Weapons Related 20 to 200 kt 433

15:39:18.15 37.140792 -116.064050 4,289 -853 Weapons Related Less than 20 kt 434

19:15:00.04 37.072497 -116.029969 4,102 -1,642 Weapons Related 20 to 200 kt 435

15:37:43.10 37.116165 -116.028403 4,298 -600 Weapons Related Less than 20 kt 436

18:35:00.04 37.091654 -116.019550 4,246 -1,842 Weapons Related 20 to 200 kt 437

18:35:00.04 37.037278 -116.019303 4,003 -902 Weapons Related Less than 20 kt 438

18:28:00.04 37.031770 -116.016605 3,991 -1,093 Weapons Related Less than 20 kt 439

15:17:19.10 37.157159 -116.039558 4,296 -683 Weapons Related Less than 20 kt 440

18:17:37.10 37.126269 -116.070340 4,260 -881 Weapons Related Less than 20 kt 441

15:55:07.04 37.271783 -116.434726 6,557 -2,202 Weapons Related 19 kt 442

18:15:00.10 37.174446 -116.209226 7,632 -1,330 Weapons Effects Less than 20 kt 443

18:41:00.04

18:41:00.07

37.034601

37.037340

-116.031660

-116.030263

4,000

4,004

-393

-642

Safety Experiment

Weapons Related

Less than 20 kt

Less than 20 kt

444

18:04:13.11 37.143627 -116.053391 4,242 -1,303 Weapons Related Less than 20 kt 445

19:00:00.04 37.009209 -116.009951 3,959 -1,092 Weapons Related Less than 20 kt 446

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

48

Operation Flintlock – Continued

431

Sepia 

Drillback release of radioactivity 

detected onsite only

11/12/1965 LANL NNSS U3en Shaft

432

Kermet 

Accidental and drillback release of 

radioactivity detected onsite only

11/23/1965 LLNL NNSS U2c Shaft

433

Corduroy 

Drillback release of radioactivity 

detected onsite only

12/03/1965 LLNL NNSS U10k Shaft

434

Emerson 

Accidental and drillback release of 

radioactivity detected onsite only

12/16/1965 LLNL NNSS U2al Shaft

435 Buff  12/16/1965 LANL NNSS U3dh Shaft

436

Maxwell

Drillback release of radioactivity 

detected onsite only

01/13/1966 LLNL NNSS U9br Shaft

437 Lampblack 01/18/1966 LANL NNSS U7i Shaft

438

Sienna 

Drillback release of radioactivity 

detected onsite only

01/18/1966 LANL NNSS U3cj Shaft

439 Dovekie  01/21/1966 LANL NNSS U3cd Shaft

440

Reo 

Accidental and drillback release of 

radioactivity detected onsite only

01/22/1966 LLNL NNSS U10m Shaft

441

Plaid II 

Accidental and drillback release of 

radioactivity detected onsite only

02/03/1966 LLNL NNSS U2r Shaft

442

Rex

Drillback release of radioactivity 

detected onsite only

02/24/1966 LLNL NNSS U20h Shaft

443

Red Hot

Accidental release of radioactivity 

detected offsite

03/05/1966 LANL/DoD NNSS U12g.06 Tunnel

444

Cinnamon

Finfoot 

Simultaneous, separate holes

Finfoot: Accidental release of 

radioactivity detected onsite only

03/07/1966

03/07/1966

LANL

LANL

NNSS

NNSS

U3dm

U3du

Shaft

Shaft

445

Clymer 

Drillback release of radioactivity 

detected onsite only

03/12/1966 LLNL NNSS U9ce Shaft

446 Purple  03/18/1966 LANL NNSS U3ds Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
51

Operation Flintlock – Continued

14:55:28.14 37.113290 -116.032221 4,271 -492 Plowshare 370 tons 447

18:40:00.04 37.102659 -116.020804 4,326 -1,842 Weapons Related Less than 20 kt 448

13:57:17.10 37.139472 -116.141747 4,872 -742 Weapons Related Less than 20 kt 449

22:27:30.04 37.017361 -115.993093 4,010 -742 Weapons Related Less than 20 kt 450

14:13:43.10 37.242607 -116.431741 6,520 -1,784 Weapons Related 70 kt 451

14:55:26.14 37.160491 -116.083743 4,423 -549 Weapons Related 1.4 kt 452

18:38:00.14 36.887407 -115.941661 3,586 -970 Weapons Effects Less than 20 kt 453

13:33:00.04 37.043620 -116.023357 4,013 -414 Safety Experiment Less than 20 kt 454

13:32:17.09 37.137027 -116.138007 4,781 -648 Weapons Related Less than 20 kt 455

14:00:00.04 37.050572 -116.038720 4,036 -1,001 Weapons Related 12 kt 456

15:00:00.08 37.347938 -116.322827 6,861 -2,188 Weapons Related 73 kt 457

19:37:26.20 37.134240 -116.071989 4,291 -816 Weapons Related Less than 20 kt 458

13:30:00.04 37.086803 -116.034310 4,146 -1,800 Weapons Related 20 to 200 kt 459

13:56:28.14 37.111103 -116.058798 4,195 -2,201 Weapons Related 20 to 200 kt 460

20:00:00.04 37.178340 -116.098631 4,615 -1,106 Weapons Effects 22 kt 461

15:30:00.09 37.227022 -116.056412 5,090 -1,518 Weapons Effects 62 kt 462

14:00:00.04 37.068410 -116.036173 4,070 -1,840 Weapons Related 20 to 200 kt 463

14:30:00.04 37.059367 -116.039682 4,053 -1,593 Weapons Related Less than 20 kt 464

17:00:00.04 37.009611 -116.203797 6,499 -1,075 Weapons Effects Less than 20 kt 465

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

50

Operation Flintlock – Continued

447

Templar

Excavation device development

Drillback release of radioactivity 

detected onsite only

03/24/1966 LLNL NNSS U9bt Shaft

448 Lime 04/01/1966 LANL NNSS U7j Shaft

449

Stutz 

Drillback release of radioactivity 

detected onsite only

04/06/1966 LLNL NNSS U2ca Shaft

450 Tomato  04/07/1966 LANL NNSS U3ek Shaft

451

Duryea

Drillback release of radioactivity 

detected onsite only

04/14/1966 LLNL NNSS U20a-1 Shaft

452

Fenton 

Accidental and drillback release of 

radioactivity detected offsite by 

aircraft only

04/23/1966 LLNL NNSS U2m1 Shaft

453

Pin Stripe

Accidental release of radioactivity 

detected offsite

04/25/1966 LANL/DoD NNSS U11b Shaft

454 Ochre 04/29/1966 LANL NNSS U3ec Shaft

455

Traveler 

Drillback release of radioactivity 

detected onsite only

05/04/1966 LLNL NNSS U2cd Shaft

456 Cyclamen 

Included heavy element experiment 05/05/1966 LANL NNSS U3cx Shaft

457 Chartreuse 05/06/1966 LANL NNSS U19d Shaft

458

Tapestry 

Accidental and drillback release of 

radioactivity detected onsite only

05/12/1966 LLNL NNSS U2an Shaft

459 Piranha  05/13/1966 LANL NNSS U7e Shaft

460

Dumont 

Drillback release of radioactivity 

detected onsite only

05/19/1966 LLNL NNSS U2t Shaft

461 Discus Thrower  05/27/1966 LANL/DoD NNSS U8a Shaft

462

Pile Driver

Accidental release of radioactivity 

detected onsite only

06/02/1966 LANL/DoD NNSS U15a.01 Tunnel

463 Tan  06/03/1966 LANL NNSS U7k Shaft

464 Puce 06/10/1966 LANL NNSS U3bs Shaft

465

Double Play

Accidental release of radioactivity 

detected offsite

Controlled and drillback release of 

radioactivity detected onsite only

06/15/1966 LLNL/DoD NNSS U16a.03 Tunnel

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
53

Operation Flintlock – Continued

18:02:47.13 37.171487 -116.049744 4,292 -1,492 Weapons Related 20 to 200 kt 466

17:13:00.07 37.155257 -116.073029 4,354 -1,057 Plowshare 25 kt 467

22:15:00.07 37.315753 -116.299858 6,792 -2,688 Weapons Related 365 kt 468

Operation Latchkey

15:33:30.13 37.140440 -116.134038 4,719 -504 Plowshare 1.2 kt 469

13:16:00.07 37.168619 -116.048635 4,281 -635 Weapons Related Less than 20 kt 470

15:36:00.05 37.046264 -116.030188 4,021 -288 Safety Experiment Less than 20 kt 471

15:30:00.05 36.875842 -115.951559 3,395 -837 Weapons Effects 7.8 kt 472

18:00:00.04 37.103299 -116.036570 4,223 -1,841 Weapons Related Less than 20 kt 473

14:45:30.09 37.168610 -116.046919 4,285 -750 Weapons Related Less than 20 kt 474

19:00:00.05 37.047027 -116.017846 4,031 -763 Weapons Related Less than 20 kt 475

14:45:00.00 37.169907 -116.048082 4,286 -652 Plowshare 2.3 kt 476

12:00:00.14 37.134409 -116.050724 4,202 -782 Weapons Related Less than 20 kt 477

15:02:00.04 37.042727 -116.011200 4,031 -693 Weapons Related Less than 20 kt 478

15:00:00.13 37.169336 -116.049185 4,281 -307 Safety Experiment Less than 20 kt 479

12:15:00.05 31.142300 -89.570000 265 -2,710 Vela Uniform 380 tons 480

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

52

Operation Flintlock – Continued

466

Kankakee 

Drillback release of radioactivity 

detected onsite only

06/15/1966 LLNL NNSS U10p Shaft

467

Vulcan 

Device development 

Heavy element production

Drillback release of radioactivity 

detected onsite only

06/25/1966 LLNL NNSS U2bd Shaft

468 Halfbeak 06/30/1966 LANL NNSS U19b Shaft

Operation Latchkey

469

Saxon 

Excavation device development

Drillback release of radioactivity 

detected onsite only

07/28/1966 LLNL NNSS U2cc Shaft

470

Rovena 

Drillback release of radioactivity 

detected onsite only

08/10/1966 LLNL NNSS U10s Shaft

471 Tangerine 08/12/1966 LANL NNSS U3eb Shaft

472

Derringer

Accidental release of radioactivity 

detected offsite

09/12/1966 LANL/SNL/DoD NNSS U5i Shaft

473 Daiquiri 09/23/1966 LANL NNSS U7o Shaft

474

Newark 

Drillback release of radioactivity 

detected onsite only

09/29/1966 LLNL NNSS U10u Shaft

475 Khaki 10/15/1966 LANL NNSS U3et Shaft

476

Simms 

Excavation device development

Drillback release of radioactivity 

detected onsite only

11/05/1966 LLNL NNSS U10w Shaft

477

Ajax 

Accidental and drillback release of 

radioactivity detected onsite only

11/11/1966 LLNL NNSS U9al Shaft

478

Cerise 

Accidental release of radioactivity 

detected onsite only

11/18/1966 LANL NNSS U3eu Shaft

479

Vigil

Accidental release of radioactivity 

detected onsite only

11/22/1966 LLNL NNSS U10ad Shaft

480

Sterling

Nuclear test detection experiment

Detonation in the same cavity created 

by the Salmon test

12/03/1966 LLNL/DoD near Hattiesburg, 

Mississippi - - - - Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
55

Operation Latchkey – Continued

17:50:00.04 37.034742 -116.007668 4,010 -788 Weapons Related Less than 20 kt 481

21:00:00.08 36.877209 -115.938776 3,381 -785 Weapons Effects Less than 20 kt 482

15:30:00.08 37.302021 -116.409182 6,470 -3,991 Weapons Related 870 kt 483

14:55:00.00 37.165072 -116.047418 4,273 -498 Weapons Related Less than 20 kt 484

16:45:00.14 37.143608 -116.136077 4,764 -1,194 Weapons Related 39 kt 485

17:40:04.41 37.099826 -116.004708 4,374 -1,836 Weapons Related 20 to 200 kt 486

16:30:00.00 37.164751 -116.048930 4,267 -648 Weapons Related Less than 20 kt 487

15:15:00.13 37.167476 -116.048002 4,278 -853 Weapons Related Less than 20 kt 488

18:34:00.04 37.017493 -116.016727 3,972 -981 Weapons Related Less than 20 kt 489

18:50:00.13 37.126802 -116.067248 4,256 -2,406 Weapons Related 20 to 200 kt 490

15:00:00.00 37.165822 -116.049570 4,270 -898 Weapons Related Less than 20 kt 491

15:19:00.04 37.039433 -116.011061 4,019 -589 Weapons Related Less than 20 kt 492

15:00:00.04 37.047313 -116.030635 4,022 -386 Safety Experiment Less than 20 kt 493

14:20:00.15 37.161930 -116.083098 4,423 -543 Weapons Related Less than 20 kt 494

15:00:00.12 37.137276 -116.133552 4,699 -501 Weapons Related Less than 20 kt 495

15:00:00.04 37.054329 -116.023095 4,047 -889 Weapons Related Less than 20 kt 496

15:09:00.04 37.019257 -116.038296 3,979 -789 Weapons Related Less than 20 kt 497

14:45:00.00 37.138735 -116.064073 4,284 -725 Weapons Related Less than 20 kt 498

13:40:00.04 37.077804 -115.996158 4,280 -1,639 Weapons Related 20 to 200 kt 499

15:00:00.20 37.130361 -116.064819 4,258 -2,445 Weapons Related 250 kt 500

14:00:00.04 37.275028 -116.370854 6,761 -3,207 Weapons Related 155 kt 501

12:30:00.03 37.044975 -116.019919 4,022 -389 Safety Experiment Less than 20 kt 502

15:00:01.50 37.247887 -116.481068 6,252 -2,075 Weapons Related 76 kt 503

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

54

Operation Latchkey – Continued

481

Sidecar 

Accidental release of radioactivity 

detected onsite only

12/13/1966 LANL NNSS U3ez Shaft

482

New Point 

Accidental release of radioactivity 

detected onsite only

12/13/1966 LLNL/DoD NNSS U11c Shaft

483 Greeley  12/20/1966 LLNL NNSS U20g Shaft

484 Rivet I 01/18/1967 LLNL NNSS U10aa Shaft

485

Nash 

Accidental release of radioactivity 

detected offsite

01/19/1967 LLNL NNSS U2ce Shaft

486 Bourbon  01/20/1967 LANL NNSS U7nS Shaft

487

Rivet II 

Accidental release of radioactivity 

detected onsite only

01/26/1967 LLNL NNSS U10z Shaft

488 Ward  02/08/1967 LLNL NNSS U10x Shaft

489 Persimmon  02/23/1967 LANL NNSS U3dn Shaft

490 Agile  02/23/1967 LLNL NNSS U2v Shaft

491

Rivet III 

Drillback release of radioactivity 

detected onsite only

03/02/1967 LLNL NNSS U10y Shaft

492

Mushroom 

Accidental release of radioactivity 

detected onsite only

03/03/1967 LANL NNSS U3ef Shaft

493 Fizz 03/10/1967 LANL NNSS U3fr Shaft

494

Oakland

Drillback release of radioactivity 

detected onsite only

04/04/1967 LLNL NNSS U2bi Shaft

495

Heilman

Accidental and drillback release of 

radioactivity detected onsite only

04/06/1967 LLNL NNSS U2cg Shaft

496 Fawn  04/07/1967 LANL NNSS U3eo Shaft

497 Chocolate  04/21/1967 LANL NNSS U3es Shaft

498 Effendi  04/27/1967 LLNL NNSS U2ap Shaft

499 Mickey  05/10/1967 LANL NNSS U7m Shaft

500

Commodore 

Drillback release of radioactivity 

detected onsite only

05/20/1967 LLNL NNSS U2am Shaft

501 Scotch 05/23/1967 LANL NNSS U19aS Shaft

502 Absinthe 05/26/1967 LANL NNSS U3ep Shaft

503

Knickerbocker

Drillback release of radioactivity 

detected onsite only

05/26/1967 LLNL NNSS U20d Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
57

Operation Latchkey – Continued

13:10:00.00 37.125507 -116.029525 4,277 -991 Plowshare 3.1 kt 504

16:00:00.08 37.202059 -116.208708 7,306 -1,237 Weapons Effects Less than 20 kt 505

11:25:00.04 37.028519 -116.023488 3,988 -1,018 Weapons Effects 10 kt 506

Operation Crosstie

13:30:00.08 37.165201 -116.045800 4,280 -317 Safety Experiment Less than 20 kt 507

13:00:00.12 37.148685 -116.049404 4,237 -1,587 Weapons Related 20 to 200 kt 508

14:00:00.04 37.024338 -116.013239 3,980 -790 Weapons Related Less than 20 kt 509

14:10:00.00 37.156644 -116.048142 4,257 -1,534 Weapons Related Less than 20 kt 510

20:12:30.04 37.012107 -116.037327 3,970 -1,089 Weapons Related Less than 20 kt 511

13:30:00.00 37.162684 -116.075033 4,386 -743 Weapons Related Less than 20 kt 512

16:30:00.04 37.177511 -116.209811 7,619 -1,463 Weapons Effects Less than 20 kt 513

13:45:00.00 37.153110 -116.053654 4,257 -1,708 Weapons Related 20 to 200 kt 514

17:30:00.04 37.034822 -116.021715 3,998 -789 Weapons Related Less than 20 kt 515

20:45:00.00 37.165768 -116.039213 4,312 -577 Plowshare 2.2 kt 516

17:00:00.04 37.098718 -116.054096 4,158 -2,188 Weapons Related 20 to 200 kt 517

14:30:00.08 37.115537 -116.058505 4,206 -2,346 Weapons Related 20 to 200 kt 518

14:30:00.06 37.031558 -116.027224 3,995 -989 Weapons Related Less than 20 kt 519

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

56

Operation Latchkey – Continued

504

Switch

Excavation device development

Drillback release of radioactivity 

detected onsite only

06/22/1967 LLNL NNSS U9bv Shaft

505

Midi Mist

Controlled release of radioactivity 

detected offsite by aircraft only 

Drillback release of radioactivity 

detected onsite only

06/26/1967 LLNL/DoD NNSS U12n.02 Tunnel

506

Umber 

Accidental release of radioactivity 

detected offsite

06/29/1967 LANL NNSS U3em Shaft

Operation Crosstie

507 Vito 07/14/1967 LLNL NNSS U10ab Shaft

508

Stanley 

Drillback release of radioactivity 

detected onsite only

07/27/1967 LLNL NNSS U10q Shaft

509 Gibson  08/04/1967 LANL NNSS U3ew Shaft

510

Washer

Drillback release of radioactivity 

detected onsite only

08/10/1967 LLNL NNSS U10r Shaft

511 Bordeaux  08/18/1967 LANL NNSS U3dr Shaft

512

Lexington 

Gas sampling and drillback release of 

radioactivity detected onsite only

08/24/1967 LLNL NNSS U2bm Shaft

513

Door Mist

Controlled and accidental release of 

radioactivity detected offsite

08/31/1967 LANL/DoD NNSS U12g.07 Tunnel

514

Yard 

Drillback release of radioactivity 

detected onsite only

09/07/1967 LLNL NNSS U10af Shaft

515

Gilroy

Drillback release of radioactivity 

detected onsite only

09/15/1967 LANL NNSS U3ex Shaft

516

Marvel 

Emplacement technique experiment

Accidental and drillback release of 

radioactivity detected onsite only

09/21/1967 LLNL NNSS U10dS1 Shaft

517 Zaza  09/27/1967 LANL NNSS U4c Shaft

518

Lanpher 

Drillback release of radioactivity 

detected onsite only

10/18/1967 LLNL NNSS U2x Shaft

519

Sazerac 

Drillback release of radioactivity 

detected onsite only

10/25/1967 LANL NNSS U3fa Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
59

Operation Crosstie – Continued

14:30:00.14 37.049749 -116.040443 4,034 -789 Weapons Related Less than 20 kt 520

14:45:00.08 37.156291 -116.049466 4,251 -646 Weapons Related Less than 20 kt 521

15:00:00.04 37.091760 -116.036669 4,164 -2,189 Weapons Related Less than 20 kt 522

13:00:00.00 37.159219 -116.053821 4,263 -640 Weapons Related Less than 20 kt 523

19:30:00.14 36.677905 -107.209025 7,204 -4,227 Plowshare 29 kt 524

15:00:00.04 37.036640 -116.002858 4,038 -1,091 Weapons Related Less than 20 kt 525

16:30:00.13 37.145534 -116.066548 4,310 -810 Weapons Effects 7.4 kt 526

15:00:00.00 37.156337 -116.054750 4,261 -1,455 Weapons Related 20 to 200 kt 527

18:15:00.08 38.634221 -116.216221 6,030 -3,200 Weapons Related 200 to 1000 kt 528

15:00:00.04 37.042747 -116.014798 4,021 -388 Weapons Related Less than 20 kt 529

16:00:00.11 37.280797 -116.515339 6,197 -170 Plowshare 2.3 kt 530

15:30:00.04 37.000975 -116.010018 3,951 -788 Weapons Related Less than 20 kt 531

15:00:00.04 37.041584 -116.002819 4,059 -789 Weapons Related Less than 20 kt 532

15:30:00.00 37.116509 -116.054567 4,199 -2,116 Weapons Related 20 to 200 kt 533

17:08:30.04 37.184571 -116.212312 7,505 -1,345 Weapons Effects Less than 20 kt 534

15:30:00.04 36.969998 -116.056680 3,930 -393 Weapons Related Less than 20 kt 535

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

58

Operation Crosstie – Continued

520

Cognac

Accidental release of radioactivity 

detected onsite only

10/25/1967 LANL NNSS U3fm Shaft

521

Worth

Drillback release of radioactivity 

detected onsite only

10/25/1967 LLNL NNSS U10ag Shaft

522 Cobbler 11/08/1967 LANL NNSS U7u Shaft

523

Polka

Gas sampling and drillback release of 

radioactivity detected onsite only

12/06/1967 LLNL NNSS U10ai Shaft

524

Gasbuggy

Joint Government/industry gas 

stimulation experiment

12/10/1967 LLNL near Farmington, 

New Mexico - - - - Shaft

525 Stilt 12/15/1967 LANL NNSS U3fh Shaft

526

Hupmobile 

Accidental release of radioactivity 

detected offsite

01/18/1968 LLNL NNSS U2y Shaft

527

Staccato 

Drillback release of radioactivity 

detected onsite only

01/19/1968 LLNL NNSS U10ah Shaft

528 Faultless

Seismic calibration 01/19/1968 LLNL Central Nevada - - - - Shaft

529

Brush

Accidental release of radioactivity 

detected onsite only

01/24/1968 LANL NNSS U3eq Shaft

530 Cabriolet

Radioactivity detected offsite 01/26/1968 LLNL NNSS U20l Crater

531 Mallet  01/31/1968 LANL NNSS U3fv Shaft

532 Torch 02/21/1968 LANL NNSS U3fj Shaft

533

Knox 

Drillback release of radioactivity 

detected onsite only

02/21/1968 LLNL NNSS U2at Shaft

534 Dorsal Fin 02/29/1968 LANL/DoD NNSS U12e.10 Tunnel

535

Russet

Accidental and Special Packaging 

Operation release of radioactivity 

detected onsite only

03/05/1968 LANL/DoD NNSS U6a Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
61

Operation Crosstie – Continued

17:04:00.11

17:04:00.11

17:04:00.11

17:04:00.11

17:04:00.11

37.007336

37.007471

37.007617

37.007772

37.007913

-116.370794

-116.371259

-116.371740

-116.372234

-116.372713

5,210

5,210

5,210

5,210

5,210

-165

-165

-165

-165

-165

Plowshare

Plowshare

Plowshare

Plowshare

Plowshare

1.08 kt

1.08 kt

1.08 kt

1.08 kt

1.08 kt

536

15:19:00.06 37.047677 -116.011675 4,053 -686 Weapons Related 1.5 kt 537

15:00:00.04 37.332546 -116.311550 6,766 -2,191 Weapons Related 20 to 200 kt 538

18:44:27.04 36.871674 -115.931994 3,349 -868 Weapons Effects Less than 20 kt 539

15:02:00.04 37.052264 -116.021742 4,043 -790 Weapons Related Less than 20 kt 540

14:00:00.00

14:00:00.00

37.154329

37.156631

-116.079724

-116.083142

4,385

4,408

-1,253

-757

Weapons Related

Weapons Related

20 to 200 kt

Less than 20 kt

541

14:05:00.00 37.152467 -116.037881 4,285 -1,619 Weapons Related 20 to 200 kt 542

17:01:30.08 37.337655 -116.376459 6,754 -740 Vela Uniform Less than 20 kt 543

15:00:00.07 37.295373 -116.456591 6,370 -3,825 Weapons Related 1.3 Mt 544

16:00:00.04 37.028499 -116.020744 3,987 -789 Weapons Related Less than 20 kt 545

14:10:00.00 37.157276 -116.035786 4,317 -596 Weapons Related Less than 20 kt 546

13:00:00.00 37.120001 -116.059701 4,218 -1,551 Weapons Related 20 to 200 kt 547

14:45:00.04 37.008586 -115.996256 3,987 -788 Weapons Related Less than 20 kt 548

14:21:30.34 37.034796 -116.016922 3,998 -781 Weapons Related Less than 20 kt 549

21:30:00.00

21:30:00.00

21:30:00.00

21:30:00.00

21:30:00.00

37.167432

37.165358

37.165346

37.166936

37.166925

-116.043359

-116.044309

-116.041550

-116.045676

-116.042920

4,294

4,285

4,298

4,282

4,294

-620

-620

-620

-896

-620

Weapons Related

Weapons Related

Weapons Related

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt

550

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

60

Operation Crosstie – Continued

536

Buggy-A

Buggy-B

Buggy-C

Buggy-D

Buggy-E

Simultaneous, separate holes

Row charge experiment – five 

simultaneous detonations

Buggy-A, -B, -C, -D, -E: Radioactivity 

detected offsite

03/12/1968

03/12/1968

03/12/1968

03/12/1968

03/12/1968

LLNL

LLNL

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

NNSS

NNSS

U30a

U30b

U30c

U30d

U30e

Crater

Crater

Crater

Crater

Crater

537 Pommard 03/14/1968 LANL NNSS U3ee Shaft

538 Stinger 03/22/1968 LANL NNSS U19l Shaft

539

Milk Shake

Accidental release of radioactivity 

detected onsite only

03/25/1968 LLNL/DoD NNSS U5k Shaft

540 Bevel 04/04/1968 LANL NNSS U3fu Shaft

541

Noor 

Throw 

Simultaneous, separate holes

Noor: Drillback release of radioactivity 

detected onsite only

04/10/1968

04/10/1968

LLNL

LLNL

NNSS

NNSS

U2be

U2bg

Shaft

Shaft

542

Shuffle 

Drillback release of radioactivity 

detected onsite only

04/18/1968 LLNL NNSS U10t Shaft

543

Scroll

Nuclear test detection experiment

Accidental release of radioactivity 

detected onsite only

04/23/1968 LLNL/DoD NNSS U19n Shaft

544 Boxcar 04/26/1968 LLNL NNSS U20i Shaft

545 Hatchet  05/03/1968 LANL NNSS U3fz Shaft

546

Crock 

Drillback release of radioactivity 

detected onsite only

05/08/1968 LLNL NNSS U10ak Shaft

547 Clarksmobile  05/17/1968 LLNL NNSS U2as Shaft

548

Adze

Accidental release of radioactivity 

detected onsite only

05/28/1968 LANL NNSS U3fw Shaft

549 Wembley  06/05/1968 LANL NNSS U3ey Shaft

550

Tub-A 

Tub-B 

Tub-C 

Tub-D 

Tub-F 

Simultaneous, separate holes

Tub-D: Gas sampling release of 

radioactivity detected onsite only

06/06/1968

06/06/1968

06/06/1968

06/06/1968

06/06/1968

LLNL

LLNL

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

NNSS

NNSS

U10aj C

U10aj B

U10aj F

U10aj D

U10aj A

Shaft

Shaft

Shaft

Shaft

Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
63

Operation Crosstie – Continued

13:59:59:97 37.264858 -116.315533 7,032 -2,242 Weapons Related 20 to 200 kt 551

15:30:00.04 37.046302 -116.031075 4,023 -389 Weapons Related Less than 20 kt 552

15:30:00.04 37.041530 -115.993218 4,111 -1,177 Weapons Related Less than 20 kt 553

12:22:00.08 37.245458 -116.483751 6,245 -1,992 Weapons Related 20 to 200 kt 554

Operation Bowline

14:00:00.04 37.000912 -115.999744 3,956 -788 Weapons Related Less than 20 kt 555

13:00:00.00 37.116718 -116.083109 4,257 -1,250 Weapons Related 20 to 200 kt 556

13:00:00.00 37.161740 -116.078057 4,399 -586 Weapons Related Less than 20 kt 557

17:00:00.00 37.123685 -116.049093 4,201 -655 Weapons Related Less than 20 kt 558

16:30:00.04 36.877167 -115.931938 3,385 -794 Weapons Effects Less than 20 kt 559

22:45:00.04 37.250267 -116.347773 6,836 -2,391 Weapons Related 20 to 200 kt 560

14:00:00.13 37.136018 -116.048028 4,220 -1,909 Weapons Related 20 to 200 kt 561

14:00:00.04 37.031750 -116.012497 3,994 -1,089 Weapons Related Less than 20 kt 562

14:00:00.04 37.119816 -116.128344 4,583 -1,535 Plowshare 31 kt 563

17:05:01.09 37.204715 -116.207275 7,200 -1,130 Weapons Effects Less than 20 kt 564

14:00:00.04 37.046478 -116.030608 4,022 -386 Safety Experiment Less than 20 kt 565

14:29:00.04 37.025877 -115.993703 4,030 -989 Weapons Related Less than 20 kt 566

14:30:00.00 37.133265 -116.043183 4,208 -640 Weapons Related Less than 20 kt 567

15:36:08.60 37.113212 -116.041804 4,202 -651 Weapons Related Less than 20 kt 568

18:30:00.04

18:30:00.04

37.046984

37.046984

-116.030333

-116.030333

4,022

4,022

-487

-387

Safety Experiment

Safety Experiment

Less than 20 kt

Less than 20 kt 569

18:30:00.04 37.017048 -116.036598 3,977 -751 Weapons Related Less than 20 kt 570

15:15:00.09 37.130426 -116.087381 4,312 -1,977 Weapons Related 20 to 200 kt 571

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

62

Operation Crosstie – Continued

551 Rickey  06/15/1968 LANL NNSS U19c Shaft

552

Funnel

Accidental release of radioactivity 

detected onsite only

06/25/1968 LANL NNSS U3ga Shaft

553

Sevilla

Accidental release of radioactivity 

detected onsite only

06/25/1968 LANL NNSS U3fk Shaft

554 Chateaugay 06/28/1968 LLNL NNSS U20t Shaft

Operation Bowline

555 Spud  07/17/1968 LANL NNSS U3fy Shaft

556

Tanya 

Drillback release of radioactivity 

detected onsite only

07/30/1968 LLNL NNSS U2dt Shaft

557

Imp 

Accidental release of radioactivity 

detected onsite only

08/09/1968 LLNL NNSS U2bj Shaft

558

Rack 

Gas sampling and drillback release of 

radioactivity detected onsite only

08/15/1968 LLNL NNSS U9ap Shaft

559

Diana Moon

Accidental release of radioactivity 

detected onsite only

08/27/1968 LLNL/DoD NNSS U11e Shaft

560 Sled 08/29/1968 LANL NNSS U19i Shaft

561

Noggin 

Drillback release of radioactivity 

detected onsite only

09/06/1968 LLNL NNSS U9bx Shaft

562 Knife A 09/12/1968 LANL NNSS U3fb Shaft

563

Stoddard 

Excavation device development

Drillback release of radioactivity 

detected onsite only

09/17/1968 LLNL NNSS U2cmS Shaft

564 Hudson Seal 09/24/1968 LLNL/DoD NNSS U12n.04 Tunnel

565 Welder  10/03/1968 LANL NNSS U3fs Shaft

566 Knife C  10/03/1968 LANL NNSS U3er Shaft

567 Vat  10/10/1968 LLNL NNSS U9cf Shaft

568

Hula 

Accidental, gas sampling, and drillback 

release of radioactivity detected 

onsite only

10/29/1968 LLNL NNSS U9bu Shaft

569

Bit-A

Bit-B

Simultaneous, same hole

10/31/1968

10/31/1968

LANL

LANL

NNSS

NNSS

U3gt

U3gt

Shaft

Shaft

570 File  10/31/1968 LANL NNSS U3gb Shaft

571 Crew  11/04/1968 LLNL NNSS U2db Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
65

Operation Bowline – Continued

15:16:00.09

15:16:00.09

37.130426

37.130426

-116.087381

-116.087381

4,312

4,312

-1,177

-1,177

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 572

15:30:00.04 37.047616 -116.000707 4,097 -789 Weapons Related Less than 20 kt 573

15:45:00.04 37.026099 -116.034128 3,987 -1,191 Weapons Related Less than 20 kt 574

18:00:00.03 37.009784 -116.207296 6,425 -1,010 Weapons Effects Less than 20 kt 575

16:19:00.04 37.139862 -116.043129 4,225 -1,442 Weapons Related Less than 20 kt 576

16:00:00.14 37.343363 -116.566766 5,563 -365 Plowshare 30 kt 577

15:00:00.04 37.046988 -116.031070 4,023 -427 Safety Experiment Less than 20 kt 578

15:10:00.08

15:10:00.08

15:10:00.08

15:10:00.08

15:10:00.08

15:10:00.08

37.120775

37.117543

37.118001

37.121234

37.119849

37.118828

-116.081431

-116.080434

-116.078105

-116.079102

-116.077439

-116.082599

4,265

4,254

4,249

4,261 

4,254

4,264 

-749

-824

-749

-679

-649

-869

Weapons Related

Weapons Related

Weapons Related

Weapons Related

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt 579

15:20:00.04 37.003882 -116.040135 3,965 -789 Weapons Related Less than 20 kt 580

16:30:00.04 37.231424 -116.474461 6,281 -4,600 Weapons Related 1.15 Mt 581

19:00:00.07 37.147869 -116.066530 4,315 -810 Weapons Effects 10 kt 582

19:30:00.04 37.209080 -116.226276 7,514 -1,700 Weapons Related 20 to 200 kt 583

15:00:00.04 37.015444 -115.995165 3,996 -790 Weapons Related Less than 20 kt 584

15:00:00.04 37.053271 -116.030130 4,038 -1,490 Weapons Related 20 to 200 kt 585

15:17:00.12 37.133257 -116.041124 4,212 -795 Weapons Related Less than 20 kt 586

15:00:00.04 37.002620 -116.010004 3,953 -790 Weapons Related Less than 20 kt 587

15:00:00.04 37.009391 -116.043169 3,977 -789 Weapons Related Less than 20 kt 588

16:18:20:88 37.169003 -116.211623 7,519 -1,350 Weapons Effects Less than 20 kt 589

14:30:00.12 37.139091 -116.041715 4,225 -300 Safety Experiment Less than 20 kt 590

14:40:00.43 37.162228 -116.076753 4,394 -639 Weapons Related Less than 20 kt 591

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

64

Operation Bowline – Continued

572

Crew-2nd 

Crew-3rd 

Simultaneous, same hole

11/04/1968

11/04/1968

LLNL

LLNL

NNSS

NNSS

U2db

U2db

Shaft

Shaft

573 Auger 11/15/1968 LANL NNSS U3fx Shaft

574 Knife B  11/15/1968 LANL NNSS U3dz Shaft

575 Ming Vase 11/20/1968 LANL/DoD NNSS U16a.04 Tunnel

576

Tinderbox

Drillback release of radioactivity 

detected onsite only

11/22/1968 LLNL NNSS U9az Shaft

577 Schooner

Radioactivity detected offsite 12/08/1968 LLNL NNSS U20u Crater

578 Bay Leaf 12/12/1968 LANL NNSS U3gq Shaft

579

Tyg-A 

Tyg-B 

Tyg-C 

Tyg-D 

Tyg-E 

Tyg-F 

Simultaneous, separate holes 

Tyg-A and -B: Accidental release of 

radioactivity detected onsite only

Tyg-C: Drillback release of radioactivity 

detected onsite only

12/12/1968

12/12/1968

12/12/1968

12/12/1968

12/12/1968

12/12/1968

LLNL

LLNL

LLNL

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

NNSS

NNSS

NNSS

U2dc #4

U2dc #5

U2dc #3

U2dc #2

U2dc #1

U2dc #6

Shaft

Shaft

Shaft

Shaft

Shaft

Shaft

580

Scissors 

Accidental release of radioactivity 

detected onsite only

12/12/1968 LANL NNSS U3gh Shaft

581 Benham 12/19/1968 LLNL NNSS U20c Shaft

582

Packard 

Accidental release of radioactivity 

detected onsite only

01/15/1969 LLNL NNSS U2u Shaft

583 Wineskin  01/15/1969 LLNL NNSS U12r Shaft

584 Shave  01/22/1969 LANL NNSS U3gk Shaft

585 Vise  01/30/1969 LANL NNSS U3ej Shaft

586 Biggin 01/30/1969 LLNL NNSS U9bz Shaft

587 Nipper  02/04/1969 LANL NNSS U3gl Shaft

588 Winch 02/04/1969 LANL NNSS U3gf Shaft

589 Cypress 02/12/1969 LLNL/SNL/DoD NNSS U12g.09 Tunnel

590

Valise

Gas sampling release of radioactivity 

detected onsite only

03/18/1969 LLNL NNSS U9by Shaft

591

Chatty 

Drillback release of radioactivity 

detected onsite only

03/18/1969 LLNL NNSS U2bn Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
67

Operation Bowline – Continued

18:12:00.04 37.021962 -116.031076 3,982 -998 Weapons Related Less than 20 kt 592

14:30:00.41 37.133171 -116.087531 4,323 -1,525 Weapons Related Less than 100 kt 593

13:04:00.14

13:04:00.14

37.163922

37.159915

-116.080512

-116.081744

4,418

4,409

-595

-744

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 594

17:00:00.04 37.081476 -116.014810 4,205 -1,830 Weapons Related 20 to 200 kt 595

17:00:00.04 37.090220 -116.006509 4,291 -1,839 Weapons Related 20 to 200 kt 596

13:45:00.04 37.282839 -116.501537 6,088 -1,964 Weapons Related 20 to 200 kt 597

18:00:00.04 37.011826 -115.985945 4,049 -789 Weapons Related Less than 20 kt 598

14:00:00.04

14:00:00.04

37.014942

37.014793

-116.003044

-116.000993

3,965

3,968

-407

-408

Safety Experiment

Safety Experiment

Less than 20 kt

Less than 20 kt

599

14:15:00.04 37.075055 -115.996182 4,256 -1,689 Weapons Related 20 to 200 kt 600

14:00:00.04 37.008778 -116.031186 3,965 -994 Weapons Related Less than 20 kt 601

16:00:00.13

16:00:00.13

37.162437

37.160733

-116.079494

-116.080021

4,407

4,402

-650

-750

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 602

Operation Mandrel

13:02:30.04 37.119384 -116.055988 4,209 -1,346 Weapons Related 20 to 200 kt 603

14:55:00.04 37.139465 -116.088314 4,354 -1,798 Weapons Related 20 to 200 kt 604

14:30:00.04

14:30:00.04

37.160197

37.158140

-116.064476

-116.064657

4,326

4,325

-700

-747

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

605

13:45:00.04 36.992656 -115.996396 3,942 -1,089 Weapons Related Less than 20 kt 606

13:45:00.04 37.021455 -116.038959 3,984 -784 Weapons Related Less than 20 kt 607

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

66

Operation Bowline – Continued

592

Barsac 

Accidental release of radioactivity 

detected onsite only

03/20/1969 LANL NNSS U3gc Shaft

593

Coffer 

Drillback release of radioactivity 

detected onsite only

03/21/1969 LLNL NNSS U2de Shaft

594

Gourd-Amber 

Gourd-Brown 

Simultaneous, separate holes

04/24/1969

04/24/1969

LLNL

LLNL

NNSS

NNSS

U2bf

U2bl

Shaft

Shaft

595

Blenton 

Accidental release of radioactivity 

detected onsite only

04/30/1969 LANL NNSS U7p Shaft

596 Thistle 04/30/1969 LANL NNSS U7t Shaft

597 Purse  05/07/1969 LLNL NNSS U20v Shaft

598 Aliment 05/15/1969 LANL NNSS U3gj Shaft

599

Ipecac-A

Ipecac-B

Simultaneous, separate holes 

Ipecac-A: Accidental release of 

radioactivity detected onsite 

only (trace)

05/27/1969

05/27/1969

LANL

LANL

NNSS

NNSS

U3hk-a

U3hk-b

Shaft

Shaft

600 Torrido  05/27/1969 LANL NNSS U7w Shaft

601

Tapper 

Accidental release of radioactivity 

detected onsite only

06/12/1969 LANL NNSS U3go Shaft

602

Bowl-1 

Bowl-2 

Simultaneous, separate holes

06/26/1969

06/26/1969

LLNL

LLNL

NNSS

NNSS

U2bo #1

U2bo #2

Shaft

Shaft

Operation Mandrel

603 Ildrim  07/16/1969 LLNL NNSS U2au Shaft

604

Hutch 

Drillback release of radioactivity 

detected onsite only

07/16/1969 LLNL NNSS U2df Shaft

605

Spider-A 

Spider-B 

Simultaneous, separate holes

Spider-A, -B: Drillback release of 

radioactivity detected onsite only

08/14/1969

08/14/1969

LLNL

LLNL

NNSS

NNSS

U2bp #1

U2bp #2

Shaft

Shaft

606 Horehound 08/27/1969 LANL NNSS U3gm Shaft

607

Pliers 

Accidental release of radioactivity 

detected onsite only

08/27/1969 LANL NNSS U3gn Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
69

Operation Mandrel – Continued

21:00:00.01 39.405350 -107.948470 8,200 -8,425 Plowshare 40 kt 608

18:02:20.42 36.877168 -115.929364 3,393 -868 Weapons Effects Less than 20 kt 609

14:30:00.04 37.314092 -116.461577 6,316 -3,802 Weapons Related Less than 1 Mt 610

14:30:00.04

14:30:00.04

37.158699

37.157372

-116.068599

-116.067041

4,342

4,331

-630

-610

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

611

14:30:00.04

14:30:00.04

14:30:00.04

37.011379

37.010461

37.013686

-115.999485

-116.000435

-115.999465

3,974

3,971

3,974

-389

-389

-408

Safety Experiment

Safety Experiment

Safety Experiment

Less than 20 kt

Less than 20 kt

Less than 20 kt

612

22:06:00.04 51.415670 179.179870 130 -4.003 Weapons Related About 1 Mt 613

14:30:00.14 37.256661 -116.441629 6,534 -2,046 Weapons Related 200 to 1000 kt 614

14:00:00.04 37.012530 -115.999129 3,976 -389 Safety Experiment Less than 20 kt 615

19:30:00.04 37.121466 -116.128621 4,589 -865 Weapons Related 11 kt 616

20:00:00.04

20:00:00.04

20:00:00.04

20:00:00.04

37.140159

37.140399

37.136282

37.135291

-116.131374

-116.142708

-116.140839

-116.136825

4,672

4,894

4,839

4,761

-875

-816

-560

-1,025

Weapons Related

Weapons Related

Weapons Related

Weapons Related

16.7 kt 

(Total)

617

22:01:51.04 37.143270 -116.064717 4,298 -2,050 Weapons Related 110 kt 618

15:15:00.13 37.164582 -116.075702 4,394 -540 Weapons Related 1.7 kt 619

14:52:00.04 37.031147 -116.002910 4,010 -1,292 Weapons Related 20 to 200 kt 620

14:52:00.08 37.014780 -116.023600 3,971 -1,240 Weapons Related Less than 20 kt 621

17:00:00.04 37.179930 -116.211733 7,540 -1,375 Weapons Effects Less than 20 kt 622

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

68

Operation Mandrel – Continued

608

Rulison

Joint Government/industry gas 

stimulation experiment

Drillback release of radioactivity 

detected outside operational boundary 

(gas flaring)

09/10/1969 LLNL near Parachute, 

Colorado - - - - Shaft

609

Minute Steak 

Accidental release of radioactivity 

detected onsite only

09/12/1969 LLNL/DoD NNSS U11f Shaft

610 Jorum 09/16/1969 LLNL NNSS U20e Shaft

611

Kyack-A 

Kyack-B 

Simultaneous, separate holes

Kyack-B: Accidental release of 

radioactivity detected onsite only

09/20/1969

09/20/1969

LLNL

LLNL

NNSS

NNSS

U2bq1

U2bq2

Shaft

Shaft

612

Seaweed-C

Seaweed-D

Seaweed-E

Simultaneous, separate holes

Seaweed-D: Accidental release of 

radioactivity detected onsite only

10/01/1969

10/01/1969

10/01/1969

LANL

LANL

LANL

NNSS

NNSS

NNSS

U3hk-e

U3hk-f

U3hk-c

Shaft

Shaft

Shaft

613 Milrow

Seismic calibration 10/02/1969 LANL Amchitka, Alaska - - - - Shaft

614

Pipkin

Drillback release of radioactivity 

detected onsite only

10/08/1969 LLNL NNSS U20b Shaft

615

Seaweed B

Accidental release of radioactivity 

detected onsite only

10/16/1969 LANL NNSS U3hk-d Shaft

616 Cruet  10/29/1969 LLNL NNSS U2cn Shaft

617

Pod-A 

Pod-B 

Pod-C 

Pod-D 

Simultaneous, separate holes 

Pod-D: Accidental release of 

radioactivity detected offsite 

Pod-A, -D: Drillback release of 

radioactivity detected onsite only

10/29/1969

10/29/1969

10/29/1969

10/29/1969

LLNL

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

NNSS

U2ch

U2ci

U2cj

U2ck

Shaft

Shaft

Shaft

Shaft

618 Calabash  10/29/1969 LLNL NNSS U2av Shaft

619

Scuttle

Accidental release of radioactivity 

detected offsite by aircraft only

11/13/1969 LLNL NNSS U2bh Shaft

620 Piccalilli  11/21/1969 LANL NNSS U3fc Shaft

621 Planer 11/21/1969 LANL NNSS U3el Shaft

622 Diesel Train 12/05/1969 LANL/DoD NNSS U12e.11 Tunnel

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
71

Operation Mandrel – Continued

15:00:00.04

15:00:00.04

37.014671

37.014865

-116.003735

-116.002020

3,964

3,967

-440

-490

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 623

15:30:00.07

15:30:00.07

15:30:00.07

15:30:00.07

37.167656

37.169441

37.167642

37.169427

-116.080143

-116.080129

-116.077912

-116.077891

4,429

4,434

4,415 

4,420

-655

-636

-636

-841

Weapons Related

Weapons Related

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt

624

15:00:00.04 37.083333 -116.002451 4,268 -1,807 Weapons Related 20 to 200 kt 625

15:15:00.04 37.006540 -116.023673 3,963 -1,240 Weapons Related Less than 20 kt 626

19:00:00.04

19:00:00.04

37.120431

37.120640

-116.035642

-116.029477

4,235

4,278

-1,500

-1,370

Weapons Related

Weapons Related

20 to 200 kt

20 to 200 kt

627

16:30:00.21

16:30:00.21

16:30:00.21

37.140633

37.140657

37.137364

-116.033512

-116.037636

-116.037663

4,264

4,242

4,232

-330

-802

-872

Weapons Related

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

628

17:00:00.04 37.030776 -116.035631 3,998 -998 Weapons Related Less than 20 kt 629

17:00:00.04 37.098028 -116.027355 4,253 -1,819 Weapons Related 20 to 200 kt 630

17:00:00.07 37.054972 -116.039711 4,045 -1,381 Weapons Related 20 to 200 kt 631

15:00:00.04 37.163914 -116.039702 4,308 -1,450 Weapons Related 25 kt 632

19:15:00.04 37.201239 -116.206094 7,401 -1,319 Weapons Effects Less than 20 kt 633

14:28:38.04 37.036627 -116.000460 4,045 -1,340 Weapons Related 20 to 200 kt 634

15:30:00.04

15:30:00.04

15:30:00.04

37.113755

37.116315

37.118002

-116.066669

-116.062313

-116.067318

4,214

4,214

4,227

-1,193

-1,286

-1,295

Weapons Related

Weapons Related

Weapons Related

20 to 200 kt

20 to 200 kt

20 to 200 kt

635

14:24:00:94 37.173070 -116.092626 4,527 -964 Weapons Related 8.7 kt 636

15:00:00.21

15:00:00.21

15:00:00.21

37.139529

37.141741

37.139559

-116.032156

-116.034879

-116.037645

4,275

4,256

4,238

-330

-849

-820

Safety Experiment

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

637

14:03:30.34 37.001047 -116.023716 3,955 -989 Weapons Related Less than 20 kt 638

23:05:00.04 37.086185 -116.021966 4,195 -1,839 Weapons Related 20 to 200 kt 639

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

70

Operation Mandrel – Continued

623

Culantro-A

Culantro-B

Simultaneous, separate holes

12/10/1969

12/10/1969

LANL

LANL

NNSS

NNSS

U3hi-a

U3hi-b

Shaft

Shaft

624

Tun-A 

Tun-B 

Tun-C 

Tun-D 

Simultaneous, separate holes

Tun-B, -C: Accidental and gas sampling 

release of radioactivity detected 

onsite only

Tun-C, -D: Drillback release of 

radioactivity detected onsite only

12/10/1969

12/10/1969

12/10/1969

12/10/1969

LLNL

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

NNSS

U10am #1

U10am #2

U10am #3

U10am #4

Shaft

Shaft

Shaft

Shaft

625 Grape A  12/17/1969 LANL NNSS U7s Shaft

626 Lovage  12/17/1969 LANL NNSS U3fe Shaft

627

Terrine-White 

Terrine-Yellow 

Simultaneous, separate holes

Terrine-White, -Yellow: Drillback release 

of radioactivity detected onsite only

12/18/1969

12/18/1969

LLNL

LLNL

NNSS

NNSS

U9bi #1

U9bi #2

Shaft

Shaft

628

Fob-Blue 

Fob-Green 

Fob-Red 

Simultaneous, separate holes

01/23/1970

01/23/1970

01/23/1970

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U9ITS Y-27

U9ITS V-27

U9ITS V-24

Shaft

Shaft

Shaft

629 Ajo 

In mined shaft 01/30/1970 LANL NNSS U3gd Shaft

630 Grape B  02/04/1970 LANL NNSS U7v Shaft

631 Belen  02/04/1970 LANL NNSS U3br Shaft

632 Labis 02/05/1970 LLNL NNSS U10an Shaft

633 Diana Mist 02/11/1970 LANL/DoD NNSS U12n.06 Tunnel

634 Cumarin  02/25/1970 LANL NNSS U3gz Shaft

635

Yannigan-Blue 

Yannigan-Red 

Yannigan-White 

Simultaneous, separate holes

Yannigan-Blue, -Red, -White: 

Drillback release of radioactivity 

detected onsite only

02/26/1970

02/26/1970

02/26/1970

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U2ay #3

U2ay #1

U2ay #2

Shaft

Shaft

Shaft

636

Cyathus 

Drillback release of radioactivity 

detected onsite only

03/06/1970 LLNL NNSS U8b Shaft

637

Arabis-Blue 

Arabis-Green

Arabis-Red 

Simultaneous, separate holes

03/06/1970

03/06/1970

03/06/1970

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U9ITS Z-26

U9ITS X-28

U9ITS V-26

Shaft

Shaft

Shaft

638 Jal  03/19/1970 LANL NNSS U3hh Shaft

639 Shaper  03/23/1970 LANL NNSS U7r Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
73

Operation Mandrel – Continued

19:00:00.20 37.300424 -116.535014 5,903 -3,967 Weapons Related More than 1 Mt 640

14:30:00.04 37.054842 -115.988992 4,199 -1,127 Weapons Effects 12.7 kt 641

15:00:00.04

15:00:00.04

37.112323

37.115532

-116.082967

-116.081005

4,243

4,249

-900

-1,310

Weapons Related

Weapons Related

20 to 200 kt

20 to 200 kt 642

14:13:00.04 37.059170 -116.029052 4,054 -1,280 Weapons Related Less than 20 kt 643

14:25:00.00 37.138431 -116.032162 4,273 -330 Safety Experiment Less than 20 kt 644

14:40:00.17

14:40:00.17

37.136251

37.132952

-116.034924

-116.034948

4,248

4,242

-790

-870

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

645

15:30:00.17 37.216486 -116.184897 6,957 -1,330 Weapons Effects Less than 20 kt 646

14:00:00.04 37.010400 -116.2027643 6,321 -830 Vela Uniform Less than 20 kt 647

13:30:00.17

13:30:00.17

37.161873

37.165879

-116.039722

-116.036360

4,306

4,329

-1,455

-1,280

Weapons Related

Weapons Related

20 to 200 kt

20 to 200 kt 648

14:00:00.04 37.012140 -115.992813 4,008 -790 Weapons Related Less than 20 kt 649

14:15:00.03 37.070762 -116.013873 4,148 -1,584 Weapons Related 20 to 200 kt 650

14:16:00.17 37.182560 -116.214271 7,550 -1,386 Weapons Effects Less than 20 kt 651

15:00:00.05

15:00:00.05

15:00:00.05

37.113320

37.116147

37.118084

-116.063205

-116.067572

-116.064436

4,192

4,220

4,220 

-1,734

-500

-1,100

Plowshare

Plowshare

Plowshare

105 kt

35 tons

90 tons

652

11:45:00.20 37.138423 -116.030786 4,284 -331 Weapons Related Less than 20 kt 653

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

72

Operation Mandrel – Continued

640 Handley 03/26/1970 LLNL NNSS U20m Shaft

641

Snubber 

Accidental release of radioactivity 

detected offsite

04/21/1970 LANL NNSS U3ev 2S Shaft

642

Can-Green 

Can-Red 

Simultaneous, separate holes

04/21/1970

04/21/1970

LLNL

LLNL

NNSS

NNSS

U2dd #1

U2dd #4

Shaft

Shaft

643 Beebalm 05/01/1970 LANL NNSS U3fn Shaft

644 Hod-C (Blue) 05/01/1970 LLNL NNSS U9ITS Z-25 Shaft

645

Hod-A (Green) 

Hod-B (Red) 

Simultaneous, separate holes 

Hod-B (Red): Accidental release of 

radioactivity detected onsite only

Hod-A (Green), -B (Red): 

Drillback release of radioactivity 

detected onsite only

05/01/1970

05/01/1970

LLNL

LLNL

NNSS

NNSS

U9ITS X-23

U9ITS X-20

Shaft

Shaft

646

Mint Leaf

Controlled release of radioactivity 

detected offsite

05/05/1970 LLNL/DoD NNSS U12t.01 Tunnel

647

Diamond Dust

Nuclear test detection experiment

Controlled release of radioactivity 

detected onsite only

05/12/1970 LANL/DoD NNSS U16a.05 Tunnel

648

Cornice-Green 

Cornice-Yellow 

Simultaneous, separate holes

05/15/1970

05/15/1970

LLNL

LLNL

NNSS

NNSS

U10ap #3

U10ap #1

Shaft

Shaft

649

Manzanas

Accidental release of radioactivity 

detected onsite only

05/21/1970 LANL NNSS U3gr Shaft

650 Morrones 05/21/1970 LANL NNSS U3ei Shaft

651

Hudson Moon

Controlled and accidental release of 

radioactivity detected onsite only

05/26/1970 LLNL/DoD NNSS U12e.12 Tunnel

652

Flask-Green 

Flask-Red 

Flask-Yellow 

Simultaneous, separate holes

Flask-Red: Accidental release of 

radioactivity detected onsite only

Flask-Green, -Yellow: Drillback release 

of radioactivity detected onsite only

05/26/1970

05/26/1970

05/26/1970

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U2az #1

U2az #3

U2az #2

Shaft

Shaft

Shaft

653

Piton-C

Accidental release of radioactivity 

detected onsite only

05/28/1970 LLNL NNSS U9ITS AA-25 Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
75

Operation Mandrel – Continued

12:00:00.16

12:00:00.16

37.143931

37.140640

-116.033488

-116.034881

4,268

4,255

-776

-754

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

654

13:00:00.04

13:00:00.04

37.117085

37.113881

-116.085023

-116.087003

4,261

4,255

-865

-1,015

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

655

Operation Emery

15:05:00.02

15:05:00.02

15:05:00.02

37.137402

37.134039

37.137302

-116.034915

-116.032198

-116.032171

4,252

4,265

4,271

-818

-631

-330

Weapons Related

Weapons Related

Safety Experiment

Less than 20 kt

Less than 20 kt

Less than 20 kt

656

14:30:00.04 37.070608 -116.005994 4,187 -1,839 Weapons Related 20 to 200 kt 657

14:30:00.03

14:30:00.04

14:30:00.04

37.013969

37.013968

37.014762

-116.018812

-116.018127

-116.020175

3,968

3,968

3,970

-389

-388

-874

Safety Experiment

Safety Experiment

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

658

15:00:00.04 37.029416 -116.012685 3,987 -1,291 Weapons Related 20 to 200 kt 659

15:00:00.04 37.014743 -116.016750 3,969 -889 Weapons Related Less than 20 kt 660

15:07:00.00

15:07:00.04

37.006083

37.001952

-116.040798

-116.038777

3,970

3,961

-916

-791

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 661

16:00:00.05 37.072475 -116.025859 4,116 -991 Weapons Related Less than 20 kt 662

16:00:00.09 37.100121 -116.008824 4,360 -1,591 Weapons Related 20 to 200 kt 663

16:00:00.17

16:00:00.17

16:00:00.17

16:00:00.17

37.137371

37.141771

37.134061

37.142837

-116.039032

-116.040368

-116.036318

-116.034866

4,227

4,236

4,234

4,260

-1,004

-1,245

-1,009

-961

Weapons Related

Weapons Related

Weapons Related

Plowshare

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt

664

16:05:00.16 37.129083 -116.083868 4,302 -2,170 Weapons Related 220 kt 665

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

74

Operation Mandrel – Continued

654

Piton-A

Piton-B 

Simultaneous, separate holes 

Piton-A: Accidental release of 

radioactivity detected onsite only

05/28/1970

05/28/1970

LLNL

LLNL

NNSS

NNSS

U9ITS Y-30

U9ITS X-27

Shaft

Shaft

655

Arnica-Violet 

Arnica-Yellow 

Simultaneous, separate holes

Arnica-Violet: Drillback release of 

radioactivity detected onsite only

06/26/1970

06/26/1970

LLNL

LLNL

NNSS

NNSS

U2dd #3

U2dd #2

Shaft

Shaft

Operation Emery

656

Scree-Acajou 

Scree-Alhambra 

Scree-Chamois 

Simultaneous, separate holes

Scree-Acajou: Accidental release of 

radioactivity detected onsite only

Scree-Acajou, -Alhambra: 

Drillback release of radioactivity 

detected onsite only

10/13/1970

10/13/1970

10/13/1970

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U9ITS X-24

U9ITS Z-21

U9ITS Z-24

Shaft

Shaft

Shaft

657 Tijeras  10/14/1970 LANL NNSS U7y Shaft

658

Truchas-Chacon 

Truchas-Chamisal 

Truchas-Rodarte 

Simultaneous, separate holes

Truchas-Chamisal: Accidental release 

of radioactivity detected onsite only

10/28/1970

10/28/1970

10/28/1970

LANL

LANL

LANL

NNSS

NNSS

NNSS

U3hn

U3ho

U3hm

Shaft

Shaft

Shaft

659 Abeytas  11/05/1970 LANL NNSS U3gx Shaft

660 Penasco  11/19/1970 LANL NNSS U3hl Shaft

661

Carrizozo 

Corazon

Simultaneous, separate holes

12/03/1970

12/03/1970

LANL

LANL

NNSS

NNSS

U3hr

U3ha

Shaft

Shaft

662 Canjilon 12/16/1970 LANL NNSS U3fq Shaft

663 Artesia  12/16/1970 LANL NNSS U7x Shaft

664

Avens-Alkermes 

Avens-Andorre 

Avens-Asmalte 

Avens-Cream 

Simultaneous, separate holes

Avens-Cream: Plowshare device 

development; accidental release of 

radioactivity detected onsite only

12/16/1970

12/16/1970

12/16/1970

12/16/1970

LLNL

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

NNSS

U9ITS U-24

U9ITS T-28

U9ITS W-21

U9ITS X-29

Shaft

Shaft

Shaft

Shaft

665

Carpetbag 

Drillback release of radioactivity 

detected onsite only

12/17/1970 LLNL NNSS U2dg Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
77

Operation Emery – Continued

15:30:00.20 37.173082 -116.099735 4,574 -912 Weapons Related 10 kt 666

14:50:00.04 37.033134 -116.014538 3,996 -994 Weapons Related Less than 20 kt 667

14:00:00.04 37.013167 -116.017284 3,968 -394 Safety Experiment Less than 20 kt 668

15:30:00.04 37.021919 -116.023540 3,981 -1,493 Weapons Related 20 to 200 kt 669

14:00:00.16 37.146647 -116.067709 4,312 -1,702 Weapons Related 20 to 200 kt 670

18:30:00.16 37.176732 -116.212366 7,600 -1,390 Weapons Effects Less than 20 kt 671

Operation Grommet

14:00:00.04 37.011491 -116.204268 6,310 -873 Vela Uniform Less than 20 kt 672

14:00:00.08 37.110078 -116.052290 4,179 -1,735 Plowshare 83 kt 673

14:00:00.16 37.164403 -116.033602 4,342 -1,000 Weapons Related Less than 20 kt 674

13:33:00.05 37.014335 -115.992794 4,009 -792 Weapons Related Less than 20 kt 675

13:30:00.04 37.026025 -116.020422 3,984 -888 Weapons Related Less than 20 kt 676

18:07:45.20

18:07:45.20

37.145034

37.140628

-116.034165

-116.032143

4,266

4,275

-895

-800

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 677

14:31:00.16 37.138482 -116.041768 4,222 -1,351 Weapons Related Less than 20 kt 678

14:00:00.03 37.057143 -116.037199 4,046 -1,731 Weapons Related 20 to 200 kt 679

14:00:00.04

14:00:00.04

14:00:00.04

14:00:00.04

37.021557

37.022656

37.024354

37.021901

-116.017069

-116.017197

-116.016154

-116.019772

3,977

3,979

3,980

3,980

-492

-490

-843

-741

Safety Experiment

Safety Experiment

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

Less than 20 kt

680

14:00:00.04 37.010988 -116.008219 3,961 -1,242 Weapons Related Less than 20 kt 681

14:30:00.14 37.124433 -116.087848 4,288 -1,085 Weapons Related Less than 20 kt 682

14:30:00.15 37.113742 -116.038198 4,226 -1,240 Weapons Related Less than 20 kt 683

14:30:00.16 37.179733 -116.053961 4,307 -1,000 Weapons Related Less than 20 kt 684

22:00:00.06 51.470200 179.103800 208 -5,873 Weapons Related Less than 5 Mt 685

20:15:00.17 36.879181 -115.935571 3,405 -868 Weapons Effects Less than 20 kt 686

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

76

Operation Emery – Continued

666

Baneberry 

Accidental release of radioactivity 

detected offsite

12/18/1970 LLNL NNSS U8d Shaft

667 Embudo  06/16/1971 LANL NNSS U3hd Shaft

668 Dexter 06/23/1971 LANL NNSS U3hs Shaft

669 Laguna  06/23/1971 LANL NNSS U3fd Shaft

670

Harebell 

Drillback release of radioactivity 

detected onsite only

06/24/1971 LLNL NNSS U2br Shaft

671

Camphor

Accidental and controlled release of 

radioactivity detected onsite only

06/29/1971 LLNL/SNL/DoD NNSS U12g.10 Tunnel

Operation Grommet

672 Diamond Mine

Nuclear test detection experiment 07/01/1971 LANL/DoD NNSS U16a.06 Tunnel

673

Miniata 

Device development experiment

Drillback release of radioactivity 

detected onsite only

07/08/1971 LLNL NNSS U2bu Shaft

674

Bracken

Drillback release of radioactivity 

detected onsite only

07/09/1971 LLNL NNSS U10aq Shaft

675 Apodaca 07/21/1971 LANL NNSS U3gs Shaft

676 Barranca 08/04/1971 LANL NNSS U3he Shaft

677

Nama-Amarylis

Nama-Mephisto

Simultaneous, separate holes

08/05/1971

08/05/1971

LLNL

LLNL

NNSS

NNSS

U9ITS XY-31

U9ITS Z-27

Shaft

Shaft

678 Baltic 08/06/1971 LLNL NNSS U9ITS S-25 Shaft

679 Algodones  08/18/1971 LANL NNSS U3jn Shaft

680

Frijoles-Deming 

Frijoles-Espuela 

Frijoles-Guaje 

Frijoles-Petaca 

Simultaneous, separate holes

09/22/1971

09/22/1971

09/22/1971

09/22/1971

LANL

LANL

LANL

LANL

NNSS

NNSS

NNSS

NNSS

U3jw

U3ju

U3hf

U3hz

Shaft

Shaft

Shaft

Shaft

681 Pedernal 09/29/1971 LANL NNSS U3hg Shaft

682 Chantilly  09/29/1971 LLNL NNSS U2di Shaft

683 Cathay 10/08/1971 LLNL NNSS U9ch Shaft

684 Lagoon  10/14/1971 LLNL NNSS U10ar Shaft

685

Cannikin

Proof test of warhead for Spartan 

missile (W71)

11/06/1971 LLNL Amchitka, Alaska - - - - Shaft

686

Diagonal Line

Accidental release of radioactivity 

detected offsite by aircraft only

11/24/1971 LLNL/DoD NNSS U11g Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
79

Operation Grommet – Continued

15:45:00.15 37.160401 -116.071105 4,360 -1,085 Weapons Related Less than 20 kt 687

21:09:59.16 37.123899 -116.090425 4,291 -1,086 Weapons Related 20 to 200 kt 688

21:10:01.04 37.025802 -116.030016 3,987 -991 Weapons Related Less than 20 kt 689

21:10:01.04 37.023210 -116.059499 4,031 -1,089 Weapons Related Less than 20 kt 690

15:10:00.04 37.045609 -116.030413 4,020 -394 Weapons Related Less than 20 kt 691

21:45:00.04 37.001028 -116.020291 3,955 -990 Weapons Related Less than 20 kt 692

19:02:00.16 37.165655 -116.057109 4,285 -1,000 Weapons Related Less than 20 kt 693

18:50:00.16 37.113001 -116.081690 4,241 -649 Weapons Related Less than 20 kt 694

21:00:00.04

21:00:00.08

37.005427

37.004445

-116.020939

-116.015738

3,960

3,958

-915

-689

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 695

16:32:00.16 37.121890 -116.084712 4,275 -1,071 Weapons Related Less than 20 kt 696

16:42:00.05 37.006567 -116.017474 3,960 -486 Weapons Related Less than 20 kt 697

19:15:00.04 37.207611 -116.209613 7,303 -1,234 Weapons Effects Less than 20 kt 698

14:00:00.16 37.112445 -116.085367 4,247 -850 Weapons Related Less than 20 kt 699

14:10:00.16 37.120509 -116.088767 4,279 -1,059 Weapons Related Less than 20 kt 700

17:00:00.05 37.064656 -116.002614 4,175 -1,763 Weapons Related Less than 20 kt 701

15:20:00.16 37.115841 -116.086199 4,258 -670 Weapons Related Less than 20 kt 702

14:41:00.19 36.992556 -116.023017 3,946 -441 Weapons Related Less than 20 kt 703

16:30:00.07 37.069546 -115.992974 4,267 -1,090 Weapons Related Less than 20 kt 704

16:30:03.16 37.135156 -116.036134 4,237 -605 Weapons Related Less than 20 kt 705

Operation Toggle

17:16:00.16 37.214484 -116.184243 7,020 -1,391 Weapons Effects Less than 20 kt 706

13:30:00.06 37.012445 -116.015917 3,967 -966 Weapons Related Less than 20 kt 707

13:31:10.04

13:31:10.04

13:31:10.04

37.007141

37.003705

37.003153

-116.019897

-116.019923

-116.017568

3,962

3,957

3,957

-941

-652

-440

Weapons Related

Weapons Related

Safety Experiment

Less than 20 kt

Less than 20 kt

Less than 20 kt

708

15:30:00.19 37.082010 -116.037435 4,108 -1,838 Weapons Related 20 to 200 kt 709

14:30:00.16 37.121323 -116.086603 4,276 -970 Weapons Related 15 kt 710

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

78

Operation Grommet – Continued

687 Parnassia  11/30/1971 LLNL NNSS U2bc Shaft

688 Chaenactis  12/14/1971 LLNL NNSS U2dl Shaft

689 Hospah  12/14/1971 LANL NNSS U3je Shaft

690 Yerba  12/14/1971 LANL NNSS U1c Shaft

691 Mescalero 01/05/1972 LANL NNSS U3gu Shaft

692 Cowles  02/03/1972 LANL NNSS U3hx Shaft

693

Dianthus 

Gas sampling release of radioactivity 

detected onsite only

02/17/1972 LLNL NNSS U10at Shaft

694

Sappho

Drillback release of radioactivity 

detected onsite only

03/23/1972 LLNL NNSS U2dh #2 Shaft

695

Onaja 

Ocate 

Simultaneous, separate holes

03/30/1972

03/30/1972

LANL

LANL

NNSS

NNSS

U3js

U3jp

Shaft

Shaft

696 Longchamps  04/19/1972 LLNL NNSS U2dm Shaft

697 Jicarilla 04/19/1972 LANL NNSS U3jm Shaft

698 Misty North 05/02/1972 LANL/DoD NNSS U12n.05 Tunnel

699

Kara

Drillback release of radioactivity 

detected onsite only

05/11/1972 LLNL NNSS U2dh #3 Shaft

700

Zinnia 

Drillback release of radioactivity 

detected onsite only

05/17/1972 LLNL NNSS U2dk Shaft

701 Monero 05/19/1972 LANL NNSS U3jq Shaft

702

Merida 

Drillback release of radioactivity 

detected onsite only

06/07/1972 LLNL NNSS U2dn Shaft

703 Capitan 06/28/1972 LANL NNSS U3jj Shaft

704 Tajique 06/28/1972 LANL NNSS U7aa Shaft

705 Haplopappus 06/28/1972 LLNL NNSS U9ITS W-22 Shaft

Operation Toggle

706 Diamond Sculls 07/20/1972 LLNL/DoD NNSS U12t.02 Tunnel

707

Atarque 

Cementback release of radioactivity 

detected onsite only

07/25/1972 LANL NNSS U3ht Shaft

708

Cebolla

Cuchillo

Solano

Simultaneous, separate holes

Cebolla: Drillback release of 

radioactivity detected onsite only

08/09/1972

08/09/1972

08/09/1972

LANL

LANL

LANL

NNSS

NNSS

NNSS

U3jc

U3jt

U3jx

Shaft

Shaft

Shaft

709 Oscuro  09/21/1972 LANL NNSS U7z Shaft

710 Delphinium  09/26/1972 LLNL NNSS U2dp Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
81

Operation Toggle – Continued

15:15:00.16 37.161994 -116.034024 4,337 -875 Weapons Related Less than 20 kt 711

18:15:00.16 37.121398 -116.033196 4,249 -821 Weapons Related Less than 20 kt 712

18:00:00.16

18:00:00.16

37.139535

37.139535

-116.033233

-116.033233

4,265

4,265

-700

-600

Safety Experiment

Weapons Related

Less than 20 kt

Less than 20 kt 713

16:30:00.04 37.031253 -116.022094 3,991 -889 Weapons Related Less than 20 kt 714

15:30:00.16 37.138037 -116.035596 4,246 -600 Weapons Related Less than 20 kt 715

20:15:00.24 37.139909 -116.084124 4,341 -2,260 Weapons Related Less than 20 kt 716

20:15:24.35

20:15:24.35

37.139909

37.139909

-116.084124

-116.084124

4,341

4,341

-1,460

-1,430

Weapons Effects

Weapons Effects

Less than 20 kt

20 to 200 kt 717

15:30:00.16 37.147045 -116.050962 4,237 -600 Weapons Related Less than 20 kt 718

16:10:00.19 37.103545 -116.027600 4,285 -1,865 Weapons Related 20 to 200 kt 719

20:15:00.17 37.117223 -116.087903 4,268 -1,070 Weapons Related Less than 20 kt 720

14:50:00.16 37.177828 -116.054766 4,297 -800 Weapons Related Less than 20 kt 721

22:25:00.03

22:25:00.07

37.004786

36.993607

-116.029336

-116.021912

3,962

3,948

-1,485

-908

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

722

15:15:00.04 37.012101 -116.020835 3,968 -806 Weapons Related Less than 20 kt 723

17:15:00.17 37.122999 -116.059385 4,226 -1,850 Weapons Related 90 kt 724

13:30:00.04 37.006221 -116.016942 3,960 -490 Weapons Related Less than 20 kt 725

16:00:00.12

16:00:00.12

16:00:00.12

39.793250

39.793250

39.793250

-108.367210

-108.367210

-108.367210

6,630

6,630

6,630

-5,840

-6,230

-6,690

Plowshare

Plowshare

Plowshare

33 kt

33 kt

33 kt

726

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

80

Operation Toggle – Continued

711 Akbar  11/09/1972 LLNL NNSS U10ax Shaft

712

Arsenate

Gas sampling release of radioactivity 

detected onsite only

11/09/1972 LLNL NNSS U9ci Shaft

713

Canna-Limoges

Canna-Umbrinus

Simultaneous, same hole

11/17/1972

11/17/1972

LLNL

LLNL

NNSS

NNSS

U9ITS YZ-26

U9ITS YZ-26

Shaft

Shaft

714 Tuloso 12/12/1972 LANL NNSS U3gi Shaft

715

Solanum

Drillback release of radioactivity 

detected onsite only

12/14/1972 LLNL NNSS U9ITS W-24.5 Shaft

716 Flax-Source  12/21/1972 LLNL NNSS U2dj Shaft

717

Flax-Backup 

Flax-Test 

Simultaneous, same hole

12/21/1972

12/21/1972

LLNL

LLNL

NNSS

NNSS

U2dj

U2dj

Shaft

Shaft

718 Alumroot 02/14/1973 LLNL NNSS U9cj Shaft

719

Miera 

Cementback release of radioactivity 

detected onsite only

03/08/1973 LANL NNSS U7ad Shaft

720

Gazook 

Drillback release of radioactivity 

detected onsite only

03/23/1973 LLNL NNSS U2do Shaft

721 Natoma 04/05/1973 LLNL NNSS U10aw Shaft

722

Angus 

Velarde 

Simultaneous, separate holes

Angus: Drillback release of radioactivity 

detected onsite only

Velarde: Cementback and drillback 

release of radioactivity detected 

onsite only

04/25/1973

04/25/1973

LANL

LANL

NNSS

NNSS

U3jg

U3jk

Shaft

Shaft

723

Colmor 

Cementback release of radioactivity 

detected onsite only

04/26/1973 LANL NNSS U3hv Shaft

724

Starwort 

Drillback release of radioactivity 

detected onsite only

04/26/1973 LLNL NNSS U2bs Shaft

725

Mesita

Cementback release of radioactivity 

detected onsite only

05/09/1973 LANL NNSS U3jd Shaft

726

Rio Blanco-1

Rio Blanco-2

Rio Blanco-3

Simultaneous, same hole

Joint Government/industry gas 

stimulation experiment

05/17/1973

05/17/1973

05/17/1973

LLNL

LLNL

LLNL

near Meeker, Colorado

near Meeker, Colorado

near Meeker, Colorado

- - - -

- - - -

- - - -

Shaft

Shaft

Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
83

Operation Toggle – Continued

13:30:00.04 37.078000 -116.031637 4,118 -649 Weapons Related Less than 20 kt 727

13:30:00.16 37.162182 -116.056845 4,278 -870 Weapons Related Less than 20 kt 728

17:00:00.17 37.184978 -116.215970 7,461 -1,284 Weapons Effects Less than 20 kt 729

13:00:00.08 37.245010 -116.346905 6,876 -3,499 Weapons Related 200 to 1000 kt 730

14:45:00.08 37.091989 -116.028092 4,207 -1,860 Weapons Related 20 to 200 kt 731

19:15:12.40 37.148376 -116.086726 4,388 -1,528 Weapons Related 20 to 200 kt 732

19:45:00.16 37.114860 -116.041790 4,202 -650 Weapons Related Less than 20 kt 733

Operation Arbor

14:30:00.17 37.158739 -116.073860 4,366 -700 Weapons Related Less than 20 kt 734

15:15:00.16 37.153864 -116.068579 4,333 -1,020 Weapons Related Less than 20 kt 735

17:00:00.08 37.200338 -116.204063 7,430 -1,364 Weapons Effects Less than 20 kt 736

15:30:00.08 37.010944 -116.025345 3,969 -936 Weapons Related Less than 20 kt 737

19:00:00.10 36.991440 -116.024995 3,945 -913 Weapons Related Less than 20 kt 738

15:17:00.17 37.161349 -116.073925 4,374 -650 Weapons Related Less than 20 kt 739

17:30:00.04 37.005723 -116.019762 3,960 -487 Safety Experiment Less than 20 kt 740

19:16:00.11 37.001093 -116.032277 3,955 -1,251 Weapons Related Less than 20 kt 741

15:38:00.17

15:38:00.17

15:38:00.17

37.174076

37.174076

37.174076

-116.051669

-116.051669

-116.051669

4,298

4,298

4,298

-1,125

-700

-925

Weapons Related

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

742

17:00:00.09 37.104210 -116.053709 4,167 -2,102 Weapons Related 20 to 200 kt 743

17:00:00.17 37.155082 -116.064966 4,319 -640 Weapons Related Less than 20 kt 744

15:15:00.08 37.014894 -116.045008 3,989 -593 Weapons Related Less than 20 kt 745

15:13:00.16 37.159923 -116.077282 4,387 -692 Weapons Related Less than 20 kt 746

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

82

Operation Toggle – Continued

727 Cabresto 05/24/1973 LANL NNSS U7h Shaft

728

Kashan 

Drillback release of radioactivity 

detected onsite only

05/24/1973 LLNL NNSS U10av Shaft

729 Dido Queen 06/05/1973 LLNL/DoD NNSS U12e.14 Tunnel

730 Almendro 06/06/1973 LANL NNSS U19v Shaft

731

Potrillo 

Cementback release of radioactivity 

detected onsite only

06/21/1973 LANL NNSS U7af Shaft

732

Portulaca 

Drillback release of radioactivity 

detected onsite only

06/28/1973 LLNL NNSS U2bv Shaft

733 Silene 06/28/1973 LLNL NNSS U9ck Shaft

Operation Arbor

734 Polygonum 10/02/1973 LLNL NNSS U2by Shaft

735

Waller

Drillback and gas sampling release of 

radioactivity detected onsite only

10/02/1973 LLNL NNSS U2bz Shaft

736 Husky Ace 10/12/1973 LANL/DoD NNSS U12n.07 Tunnel

737

Bernal 

Cementback release of radioactivity 

detected onsite only

11/28/1973 LANL NNSS U3jy Shaft

738

Pajara 

Cementback release of radioactivity 

detected onsite only

12/12/1973 LANL NNSS U3ji Shaft

739

Seafoam

Gas sampling release of radioactivity 

detected onsite only

12/13/1973 LLNL NNSS U2ea Shaft

740 Spar 12/19/1973 LANL NNSS U3jr Shaft

741

Elida

Cementback release of radioactivity 

detected onsite only

12/19/1973 LANL NNSS U3hy Shaft

742

Pinedrops-Bayou

Pinedrops-Sloat

Pinedrops-Tawny

Simultaneous, same hole

Pinedrops-Bayou: Drillback release of 

radioactivity detected onsite only

01/10/1974

01/10/1974

01/10/1974

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U10as

U10as

U10as

Shaft

Shaft

Shaft

743 Latir  02/27/1974 LANL NNSS U4d Shaft

744

Hulsea

Drillback release of radioactivity 

detected onsite only

03/14/1974 LLNL NNSS U2bx Shaft

745 Sapello 04/12/1974 LANL NNSS U3ge Shaft

746 Potrero  04/23/1974 LLNL NNSS U2eb Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
85

Operation Arbor – Continued

14:02:00.21 37.031057 -115.986466 4,114 -490 Weapons Related Less than 20 kt 747

16:55:00.09 37.000933 -116.002487 3,951 -592 Weapons Related Less than 20 kt 748

14:15:00.17 37.114758 -116.075575 4,236 -1,031 Weapons Related Less than 20 kt 749

13:38:30.16 37.124448 -116.079753 4,274 -1,530 Joint US-UK 20 to 200 kt 750

14:40:00.08 37.003797 -116.024378 3,960 -1,240 Weapons Related Less than 20 kt 751

16:00:00.08 37.210258 -116.208127 7,344 -1,272 Weapons Effects Less than 20 kt 752

Operation Bedrock

16:00:00.09 37.074984 -116.032691 4,102 -2,095 Weapons Related 20 to 200 kt 753

14:00:01.20

14:00:01.20

37.119205

37.119205

-116.086002

-116.086002

4,269

4,269

-1,226

-891

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

754

14:00:00.11 37.023366 -116.037231 3,987 -1,411 Weapons Related Less than 20 kt 755

15:00:00.16 37.152431 -116.084203 4,397 -2,150 Weapons Related 20 to 200 kt 756

14:00:00.08 37.012074 -116.031159 3,970 -1,030 Weapons Related Less than 20 kt 757

14:30:00.16 37.093157 -116.095630 4,251 -863 Weapons Related Less than 20 kt 758

15:05:00.17 37.132581 -116.069261 4,271 -1,880 Weapons Related 20 to 200 kt 759

17:13:00.12 37.006354 -116.015722 3,959 -1,053 Weapons Related Less than 20 kt 760

15:00:00.17 37.201085 -116.204811 7,394 -1,325 Weapons Effects Less than 20 kt 761

15:30:00.16 37.093142 -116.092544 4,234 -862 Weapons Related Less than 20 kt 762

15:00:00.90 37.000983 -116.012073 4,002 -604 Safety Experiment Less than 20 kt 763

17:30:00.09 37.011253 -116.018496 3,966 -1,000 Weapons Related Less than 20 kt 764

15:30:00.16

15:30:00.17

37.178360

37.178360

-116.052424

-116.052424

4,305

4,305

-901

-651

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

765

16:13:00.17 37.114067 -116.021904 4,354 -1,001 Weapons Related Less than 20 kt 766

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

84

Operation Arbor – Continued

747 Plomo 05/01/1974 LANL NNSS U3ff Shaft

748 Jib 05/08/1974 LANL NNSS U3hb Shaft

749

Grove 

Drillback release of radioactivity 

detected onsite only

05/22/1974 LLNL NNSS U2ds Shaft

750

Fallon 

Drillback release of radioactivity 

detected onsite only

05/23/1974 LLNL/UK NNSS U2dv Shaft

751

Jara 

Cementback release of radioactivity 

detected onsite only

06/06/1974 LANL NNSS U3hp Shaft

752 Ming Blade 06/19/1974 LANL/DoD NNSS U12n.08 Tunnel

Operation Bedrock

753 Escabosa  07/10/1974 LANL NNSS U7ac Shaft

754

Crestlake-Briar 

Crestlake-Tansan 

Simultaneous, same hole

Crestlake-Briar, -Tansan: 

Drillback release of radioactivity 

detected onsite only

07/18/1974

07/18/1974

LLNL

LLNL

NNSS

NNSS

U2dw

U2dw

Shaft

Shaft

755

Puye

Drillback and cementback release of 

radioactivity detected onsite only

08/14/1974 LANL NNSS U3jl Shaft

756 Portmanteau  08/30/1974 LLNL NNSS U2ax Shaft

757 Pratt  09/25/1974 LANL NNSS U3hq Shaft

758 Trumbull 09/26/1974 LLNL NNSS U4aa Shaft

759 Stanyan  09/26/1974 LLNL NNSS U2aw Shaft

760 Estaca 10/17/1974 LANL NNSS U3ja Shaft

761

Hybla Fair

Controlled release of radioactivity 

detected onsite only

10/28/1974 LLNL/DoD NNSS U12n.09 Tunnel

762

Temescal

Gas sampling release of radioactivity 

detected onsite only

11/02/1974 LLNL NNSS U4ab Shaft

763 Puddle 11/26/1974 LANL NNSS U3kg Shaft

764 Keel  12/16/1974 LANL NNSS U3hu Shaft

765

Portola-Larkin

Portola

Simultaneous, same hole

Portola-Larkin, Portola: 

Drillback release of radioactivity 

detected onsite only

02/06/1975

02/06/1975

LLNL

LLNL

NNSS

NNSS

U10bb

U10bb

Shaft

Shaft

766 Teleme  02/06/1975 LLNL NNSS U9cl Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
87

Operation Bedrock – Continued

20:10:00.22 37.002155 -116.025429 3,957 -1,044 Weapons Related Less than 20 kt 767

15:15:00.09 37.106153 -116.057123 4,173 -2,340 Weapons Related 20 to 200 kt 768

15:00:00.17 37.133964 -116.085117 4,313 -1,970 Weapons Related 20 to 200 kt 769

19:45:00.19 37.187868 -116.214751 7,430 -1,257 Weapons Effects Less than 20 kt 770

14:10:00.17 37.115640 -116.088262 4,263 -1,350 Weapons Related 20 to 200 kt 771

15:00:01.90 37.108805 -116.029665 4,286 -1,866 Weapons Related 20 to 200 kt 772

14:00:00.16 37.220730 -116.475069 6,257 -2,510 Weapons Related 200 to 1000 kt 773

14:20:00.17 37.340002 -116.523770 5,560 -2,400 Weapons Related 20 to 200 kt 774

14:40:00.11 37.094783 -116.036976 4,180 -2,090 Weapons Related 20 to 200 kt 775

13:00:00.17 37.111732 -116.074569 4,225 -600 Safety Experiment Less than 20 kt 776

11:49:00.09 37.065592 -116.022829 4,094 -612 Safety Experiment Less than 20 kt 777

13:00:00.09 37.350295 -116.321103 6,873 -2,988 Weapons Related 200 to 1000 kt 778

12:30:00.16 37.278875 -116.369471 6,758 -4,304 Weapons Related 200 to 1000 kt 779

Operation Anvil

17:00:00.11 37.023603 -116.029178 3,983 -1,402 Weapons Related Less than 20 kt 780

17:11:26.09 37.221588 -116.180561 6,769 -1,076 Weapons Effects Less than 20 kt 781

14:30:00.16 37.289997 -116.412434 6,509 -4,150 Weapons Related 200 to 1000 kt 782

15:30:00.11 37.020263 -116.021499 3,958 -1,070 Weapons Related Less than 20 kt 783

15:00:00.09 37.224903 -116.368447 6,734 -2,685 Weapons Related 200 to 1000 kt 784

15:30:00.16 37.117214 -116.019751 4,363 -1,070 Weapons Related Less than 20 kt 785

20:00:00.16 37.127602 -116.062439 4,237 -2,350 Weapons Related 20 to 200 kt 786

19:15:00.16 37.296498 -116.334072 6,919 -4,765 Weapons Related 200 to 1000 kt 787

14:20:00.11 37.069209 -116.031028 4,084 -2,098 Weapons Related 20 to 200 kt 788

14:40:00.16 37.106546 -116.038295 4,216 -2,149 Weapons Related 20 to 200 kt 789

14:45:00.16 37.271354 -116.489338 6,117 -3,997 Weapons Related 200 to 1000 kt 790

11:30:00.16 37.242582 -116.421101 6,477 -3,829 Weapons Related 200 to 500 kt 791

14:50:00.09 37.028476 -116.016633 3,987 -803 Weapons Related Less than 20 kt 792

14:00:00.09 37.309910 -116.365105 6,734 -2,811 Weapons Related 200 to 500 kt 793

12:30:00.16 37.305939 -116.472375 6,337 -4,174 Weapons Related 500 to 1000 kt 794

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

86

Operation Bedrock – Continued

767

Bilge

Cementback release of radioactivity 

detected onsite only

02/19/1975 LANL NNSS U3kc Shaft

768 Topgallant  02/28/1975 LANL NNSS U4e Shaft

769

Cabrillo 

Drillback release of radioactivity 

detected onsite only

03/07/1975 LLNL NNSS U2dr Shaft

770 Dining Car 04/05/1975 LLNL/DoD NNSS U12e.18 Tunnel

771 Edam  04/24/1975 LLNL NNSS U2dy Shaft

772 Obar 04/30/1975 LANL NNSS U7ag Shaft

773 Tybo 05/14/1975 LLNL NNSS U20y Shaft

774 Stilton

Test also known as Stilton/Hushed Echo 06/03/1975 LLNL/DoD NNSS U20p Shaft

775 Mizzen  06/03/1975 LANL NNSS U7ah Shaft

776 Alviso 06/11/1975 LLNL NNSS U2du Shaft

777 Futtock 06/18/1975 LANL NNSS U3eh Shaft

778 Mast 06/19/1975 LANL NNSS U19u Shaft

779 Camembert 06/26/1975 LLNL NNSS U19q Shaft

Operation Anvil

780 Marsh  09/06/1975 LANL NNSS U3kb Shaft

781 Husky Pup 10/24/1975 LLNL/DoD NNSS U12t.03 Tunnel

782

Kasseri

Drillback release of radioactivity 

detected onsite only

10/28/1975 LLNL NNSS U20z Shaft

783 Deck  11/18/1975 LANL NNSS U3kd Shaft

784 Inlet 11/20/1975 LANL NNSS U19f Shaft

785 Leyden 11/26/1975 LLNL NNSS U9cm Shaft

786 Chiberta  12/20/1975 LLNL NNSS U2ek Shaft

787 Muenster 01/03/1976 LLNL NNSS U19e Shaft

788 Keelson  02/04/1976 LANL NNSS U7ai Shaft

789

Esrom 

Drillback release of radioactivity 

detected onsite only

02/04/1976 LLNL NNSS U7ak Shaft

790 Fontina 02/12/1976 LLNL NNSS U20f Shaft

791 Cheshire 02/14/1976 LLNL NNSS U20n Shaft

792

Shallows 

Cementback release of radioactivity 

detected onsite only

02/26/1976 LANL NNSS U3jf Shaft

793 Estuary 03/09/1976 LANL NNSS U19g Shaft

794

Colby

Mudpit release of radioactivity detected 

onsite only

03/14/1976 LLNL NNSS U20aa Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
89

Operation Anvil – Continued

14:15:00.09 37.255836 -116.329461 6,899 -2,891 Weapons Related 200 to 500 kt 795

14:45:00.09 37.107238 -116.053345 4,169 -2,567 Weapons Related 200 to 500 kt 796

19:50:00.17 37.209010 -116.213330 7,384 -1,306 Weapons Effects Less than 20 kt 797

17:30:00.16 37.137153 -116.067448 4,284 -656 Weapons Related Less than 20 kt 798

20:30:00.08 37.075322 -116.044686 4,100 -2,088 Weapons Related 20 to 150 kt 799

14:30:00.17 37.124960 -116.082867 4,273 -1,761 Joint US-UK 20 to 150 kt 800

Operation Fulcrum

14:30:00.16 37.134514 -116.063146 4,260 -656 Weapons Related Less than 20 kt 801

14:58:00.08 37.035902 -116.018283 4,000 -601 Weapons Related Less than 20 kt 802

15:15:00.16 37.171658 -116.053542 4,281 -1,040 Weapons Related Less than 20 kt 803

14:49:30.08 37.079216 -116.002487 4,251 -1,400 Weapons Related Less than 20 kt 804

15:09:00.17 37.123863 -116.068328 4,239 -1,083 Weapons Related Less than 20 kt 805

15:58:00.16 37.151851 -116.064305 4,312 -657 Weapons Related Less than 20 kt 806

18:00:00.08 37.100446 -116.037331 4,205 -2,095 Weapons Related 20 to 150 kt 807

17:53:00.07

17:53:00.16

37.013438

37.006589

-116.029435

-116.032235

3,970

3,963

-1,042

-1,098

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 808

14:24:00.16

14:24:00.16

37.176147

37.176147

-116.053825

-116.053825

4,296

4,296

-600

-926

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

809

15:00:00.17 37.120187 -116.063150 4,220 -2,260 Weapons Related 20 to 150 kt 810

15:00:00.08 37.094739 -116.028751 4,219 -1,950 Weapons Related 20 to 150 kt 811

17:00:00.08 37.094280 -116.045731 4,148 -1,851 Weapons Related 20 to 150 kt 812

17:15:00.10 37.054895 -116.025832 4,047 -635 Weapons Related Less than 20 kt 813

14:07:00.16 37.097534 -116.091825 4,238 -684 Weapons Related Less than 20 kt 814

16:40:00.07 37.086522 -116.007738 4,266 -1,698 Weapons Related 20 to 150 kt 815

14:41:00.16

14:41:00.16

37.145117

37.145117

-116.049948

-116.049948

4,232

4,232

-680

-1,050

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

816

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

88

Operation Anvil – Continued

795 Pool 03/17/1976 LANL NNSS U19p Shaft

796 Strait  03/17/1976 LANL NNSS U4a Shaft

797 Mighty Epic 05/12/1976 LLNL/DoD NNSS U12n.10 Tunnel

798

Rivoli

Accidental release of radioactivity 

detected onsite only

05/20/1976 LLNL NNSS U2eg Shaft

799

Billet

Drillback release of radioactivity 

detected onsite only

07/27/1976 LANL NNSS U7an Shaft

800

Banon 

Drillback release of radioactivity 

detected onsite only

08/26/1976 LLNL/UK NNSS U2dz Shaft

Operation Fulcrum

801 Gouda 10/06/1976 LLNL NNSS U2ef Shaft

802 Sprit 11/10/1976 LANL NNSS U3hc Shaft

803 Chevre  11/23/1976 LLNL NNSS U10ay Shaft

804 Redmud  12/08/1976 LANL NNSS U7ab Shaft

805 Asiago  12/21/1976 LLNL NNSS U2ar Shaft

806 Sutter 12/21/1976 LLNL NNSS U2bw Shaft

807 Rudder  12/28/1976 LANL NNSS U7ajS Shaft

808

Oarlock 

Cove 

Simultaneous, separate holes

02/16/1977

02/16/1977

LANL

LANL

NNSS

NNSS

U3km

U3ki

Shaft

Shaft

809

Dofino

Dofino-Lawton

Simultaneous, same hole

Dofino, -Dofino-Lawton: 

Drillback release of radioactivity 

detected onsite only

03/08/1977

03/08/1977

LLNL

LLNL

NNSS

NNSS

U10ba

U10ba

Shaft

Shaft

810

Marsilly 

Drillback release of radioactivity 

detected onsite only

04/05/1977 LLNL NNSS U2el Shaft

811 Bulkhead 04/27/1977 LANL NNSS U7am Shaft

812 Crewline 05/25/1977 LANL NNSS U7ap Shaft

813 Forefoot 06/02/1977 LANL NNSS U3kf Shaft

814

Carnelian 

Drillback release of radioactivity 

detected onsite only

07/28/1977 LLNL NNSS U4af Shaft

815 Strake  08/04/1977 LANL NNSS U7ae Shaft

816

Gruyere

Gruyere-Gradino

Simultaneous, same hole

Gruyere-Gradino: Drillback release of 

radioactivity detected onsite only

08/16/1977

08/16/1977

LLNL

LLNL

NNSS

NNSS

U9cg

U9cg

Shaft

Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
91

Operation Fulcrum – Continued

15:49:00.17 37.146672 -116.063983 4,301 -903 Weapons Related Less than 20 kt 817

17:32:00.10 37.017575 -116.032483 3,976 -1,475 Weapons Related Less than 20 kt 818

17:55:00.10 37.109987 -116.055377 4,175 -2,300 Weapons Related 20 to 150 kt 819

14:36:30.08 37.032743 -116.044006 4,005 -1,245 Weapons Related Less than 20 kt 820

14:00:00.16 37.151117 -116.068429 4,327 -1,740 Weapons Related 20 to 150 kt 821

Operation Cresset

14:15:00.08 37.007554 -116.017572 3,961 -1,251 Weapons Related Less than 20 kt 822

18:06:00.07 37.187733 -116.213832 7,434 -1,263 Weapons Effects Less than 20 kt 823

22:00:00.08 37.072058 -116.050879 4,094 -2,299 Weapons Related 20 to 150 kt 824

19:30:00.08 37.020556 -116.025943 3,979 -1,214 Weapons Related Less than 20 kt 825

15:00:00.17 37.017504 -116.018778 3,973 -698 Weapons Related Less than 20 kt 826

15:30:00.07 37.135821 -116.086900 4,322 -2,189 Weapons Related 20 to 150 kt 827

21:53:00.16 37.126070 -116.032608 4,253 -1,049 Weapons Related Less than 20 kt 828

17:00:00.16 37.123631 -116.064701 4,226 -2,160 Weapons Related 20 to 150 kt 829

15:00:00.07 37.085125 -116.082490 4,182 -1,086 Weapons Related Less than 20 kt 830

16:30:00.11 37.098815 -116.020490 4,296 -1,502 Weapons Related Less than 20 kt 831

16:30:00.20 37.101729 -116.052018 4,152 -2,101 Weapons Related 20 to 150 kt 832

15:30:00.16 37.299575 -116.327584 6,888 -2,077 Joint US-UK 20 to 150 kt 833

17:45:00.07 37.233439 -116.369355 6,781 -2,204 Weapons Related 20 to 150 kt 834

14:35:00.16 37.154518 -116.035630 4,305 -600 Safety Experiment Less than 20 kt 835

15:00:00.07 37.087728 -116.053499 4,129 -2,100 Weapons Related Zero 836

17:00:00.08 37.020598 -116.032814 3,979 -998 Weapons Related Less than 20 kt 837

14:00:00.17 37.111749 -116.078002 4,232 -1,033 Weapons Related Less than 20 kt 838

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

90

Operation Fulcrum – Continued

817

Flotost 

Drillback release of radioactivity 

detected onsite only

08/16/1977 LLNL NNSS U2ao Shaft

818 Scupper 08/19/1977 LANL NNSS U3hj Shaft

819 Scantling  08/19/1977 LANL NNSS U4h Shaft

820 Ebbtide  09/15/1977 LANL NNSS U3kt Shaft

821

Coulommiers 

Drillback release of radioactivity 

detected onsite only

09/27/1977 LLNL NNSS U2ei Shaft

Operation Cresset

822

Bobstay 

Cementback release of radioactivity 

detected onsite only

10/26/1977 LANL NNSS U3jb Shaft

823

Hybla Gold

Controlled release of radioactivity 

detected onsite only

11/01/1977 LANL/DoD NNSS U12e.20 Tunnel

824 Sandreef  11/09/1977 LANL NNSS U7aq Shaft

825 Seamount 11/17/1977 LANL NNSS U3kp Shaft

826 Rib  12/14/1977 LANL NNSS U3jv Shaft

827

Farallones 

Drillback release of radioactivity 

detected onsite only

12/14/1977 LLNL NNSS U2fa Shaft

828

Campos

Drillback release of radioactivity 

detected onsite only

02/13/1978 LLNL NNSS U9cp Shaft

829

Reblochon 

Drillback release of radioactivity 

detected onsite only

02/23/1978 LLNL NNSS U2en Shaft

830

Karab 

Drillback release of radioactivity 

detected onsite only

03/16/1978 LLNL NNSS U4ah Shaft

831 Topmast 03/23/1978 LANL NNSS U7ay Shaft

832 Iceberg  03/23/1978 LANL NNSS U4g Shaft

833 Fondutta 04/11/1978 LLNL/UK NNSS U19zS Shaft

834 Backbeach 04/11/1978 LANL NNSS U19x Shaft

835 Asco 04/25/1978 LLNL NNSS U10bc Shaft

836

Transom 

No nuclear yield

Device was destroyed by Hearts 

detonation on 09/06/1979

05/10/1978 LANL NNSS U4f Shaft

837 Jackpots 06/01/1978 LANL NNSS U3kj Shaft

838

Satz 

Gas sampling release of radioactivity 

detected onsite only

07/07/1978 LLNL NNSS U2dq Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
93

Operation Cresset – Continued

17:00:00.08 37.078621 -116.044656 4,109 -1,853 Weapons Related 20 to 150 kt 839

14:00:00.16 37.275877 -116.358226 6,694 -2,234 Weapons Related 20 to 150 kt 840

15:15:00.16 37.208750 -116.211642 7,346 -1,273 Weapons Effects Less than 20 kt 841

16:30:00.17

16:30:00.17

37.170963

37.170963

-116.088036

-116.088036

4,488

4,488

-688

-1,377

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 842

17:00:00.07 37.073820 -116.020703 4,139 -1,449 Weapons Related 20 to 150 kt 843

17:20:00.08 37.079756 -116.052192 4,111 -2,099 Weapons Related 20 to 150 kt 844

Operation Quicksilver

15:25:00.17 37.287894 -116.298378 6,991 -1,891 Weapons Related Less than 20 kt 845

19:00:00.17 37.126821 -116.084743 4,271 -1,778 Joint US-UK 20 to 150 kt 846

17:07:30.07 37.029621 -116.025000 3,991 -812 Weapons Related Less than 20 kt 847

15:30:00.16 37.273338 -116.411164 6,581 -2,260 Weapons Related 20 to 150 kt 848

18:00:00.10 37.105363 -116.012547 4,389 -1,071 Weapons Related Less than 20 kt 849

20:00:00.09 37.102435 -116.055712 4,159 -1,900 Weapons Related 20 to 150 kt 850

18:05:00.16 37.151962 -116.072708 4,344 -1,760 Weapons Related 20 to 150 kt 851

18:30:00.10 37.027781 -116.040620 3,995 -1,197 Weapons Related Less than 20 kt 852

16:00:00.10 36.998135 -116.018604 3,951 -1,100 Weapons Related Less than 20 kt 853

14:00:00.17 37.289635 -116.456143 6,366 -2,239 Weapons Related 20 to 150 kt 854

15:00:13.54 37.107580 -116.015958 4,384 -1,100 Weapons Related Less than 20 kt 855

14:44:00.17 37.143116 -116.088389 4,364 -1,760 Weapons Related 20 to 150 kt 856

15:07:30.16 37.083902 -116.070757 4,142 -1,475 Weapons Related 20 to 150 kt 857

15:00:00.11 37.014700 -116.008872 3,966 -1,301 Weapons Related 20 to 150 kt 858

15:08:00.17 37.121173 -116.067457 4,221 -1,522 Joint US-UK 20 to 150 kt 859

15:00:00.09 37.088064 -116.053654 4,130 -2,100 Weapons Related 140 kt 860

17:02:00.09 37.154948 -116.039058 4,289 -656 Weapons Related Less than 20 kt 861

15:00:00.09 37.229014 -116.364938 6,758 -2,100 Weapons Related 20 to 150 kt 862

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

92

Operation Cresset – Continued

839 Lowball  07/12/1978 LANL NNSS U7av Shaft

840 Panir 08/31/1978 LLNL NNSS U19yS Shaft

841 Diablo Hawk 09/13/1978 LLNL/DoD NNSS U12n.10a Tunnel

842

Cremino

Cremino-Caerphilly

Simultaneous, same hole

09/27/1978

09/27/1978

LLNL

LLNL

NNSS

NNSS

U8e

U8e

Shaft

Shaft

843 Draughts  09/27/1978 LANL NNSS U7al Shaft

844 Rummy  09/27/1978 LANL NNSS U7au Shaft

Operation Quicksilver

845 Emmenthal 11/02/1978 LLNL NNSS U19t Shaft

846

Quargel 

Drillback release of radioactivity 

detected onsite only

11/18/1978 LLNL/UK NNSS U2fb Shaft

847 Concentration  12/01/1978 LANL NNSS U3kn Shaft

848

Farm

Gas sampling release of radioactivity 

detected onsite only

12/16/1978 LLNL NNSS U20ab Shaft

849 Baccarat  01/24/1979 LANL NNSS U7ax Shaft

850 Quinella  02/08/1979 LANL NNSS U4l Shaft

851

Kloster 

Drillback release of radioactivity 

detected onsite only

02/15/1979 LLNL NNSS U2eo Shaft

852 Memory  03/14/1979 LANL NNSS U3kq Shaft

853 Freezeout  05/11/1979 LANL NNSS U3kw Shaft

854

Pepato

Drillback release of radioactivity 

detected onsite only

06/11/1979 LLNL NNSS U20ad Shaft

855 Chess 06/20/1979 LANL NNSS U7at Shaft

856

Fajy 

Drillback and gas sampling release of 

radioactivity detected onsite only

06/28/1979 LLNL NNSS U2fc Shaft

857

Burzet 

Gas sampling release of radioactivity 

detected onsite only

08/03/1979 LLNL NNSS U4ai Shaft

858 Offshore  08/08/1979 LANL NNSS U3ks Shaft

859

Nessel 

Gas sampling release of radioactivity 

detected onsite only

08/29/1979 LLNL/UK NNSS U2ep Shaft

860

Hearts 

Detonation destroyed undetonated 

Transom device from 05/10/1978

09/06/1979 LANL NNSS U4n Shaft

861 Pera  09/08/1979 LLNL NNSS U10bd Shaft

862 Sheepshead 09/26/1979 LANL NNSS U19aa Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
95

Operation Tinderbox

15:00:00.10 36.993912 -116.024975 3,948 -750 Weapons Related Less than 20 kt 863

18:00:00.09 37.137325 -116.063944 4,273 -672 Weapons Related Less than 20 kt 864

15:00:00.09 37.126500 -116.089376 4,287 -1,209 Weapons Related Less than 20 kt 865

15:35:00.09 37.179898 -116.083993 4,515 -889 Weapons Related Less than 20 kt 866

14:00:00.09 37.149828 -116.083132 4,368 -1,368 Weapons Related 20 to 150 kt 867

20:00:00.09 37.101071 -116.031400 4,241 -1,900 Weapons Related 20 to 150 kt 868

17:00:00.08 37.248374 -116.423288 6,473 -2,077 Joint US-UK 20 to 150 kt 869

18:46:30.09 37.055962 -116.019826 4,060 -1,150 Weapons Related Less than 20 kt 870

13:00:00.09 37.003016 -116.032261 3,958 -1,100 Weapons Related Less than 20 kt 871

17:15:00.09 37.281604 -116.454743 6,360 -2,116 Weapons Related 20 to 150 kt 872

15:10:00.07 37.023247 -116.035005 3,985 -1,050 Weapons Effects Less than 20 kt 873

19:05:00.08 37.256269 -116.478298 6,189 -2,232 Weapons Related 20 to 150 kt 874

18:19:00.09 37.012995 -116.023615 3,970 -1,200 Weapons Related Less than 20 kt 875

14:45:00.09 37.056117 -116.048955 4,057 -1,250 Weapons Related 20 to 150 kt 876

15:26:30.08 37.115814 -116.065438 4,203 -1,391 Weapons Related 1.07 kt 877

Operation Guardian

19:15:00.12 37.074528 -116.000132 4,238 -1,400 Joint US-UK Less than 20 kt 878

18:00:00.09 37.211210 -116.206250 7,347 -1,278 Weapons Effects Less than 20 kt 879

16:50:00.08 37.111444 -116.019526 4,372 -1,050 Weapons Related Less than 20 kt 880

15:10:00.09 37.324737 -116.316055 6,742 -1,879 Joint US-UK 20 to 150 kt 881

20:25:00.09 37.087042 -116.045619 4,129 -1,850 Weapons Related 20 to 150 kt 882

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

94

Operation Tinderbox

863 Backgammon  11/29/1979 LANL NNSS U3jh Shaft

864

Azul

Detonation destroyed Peninsula 

device that was damaged during 

emplacement on 10/23/1975

Peninsula device was not tested

12/14/1979 LLNL NNSS U2em Shaft

865

Tarko 

Drillback and gas sampling release of 

radioactivity detected onsite only

02/28/1980 LLNL NNSS U2fd Shaft

866

Norbo 

Accidental and gas sampling release of 

radioactivity detected onsite only

03/08/1980 LLNL NNSS U8c Shaft

867 Liptauer  04/03/1980 LLNL NNSS U2eh Shaft

868 Pyramid  04/16/1980 LANL NNSS U7be Shaft

869

Colwick

Gas sampling release of radioactivity 

detected onsite only

04/26/1980 LLNL/UK NNSS U20ac Shaft

870 Canfield  05/02/1980 LANL NNSS U3kx Shaft

871

Flora

Drillback release of radioactivity 

detected onsite only

05/22/1980 LANL NNSS U3lg Shaft

872

Kash

Gas sampling release of radioactivity 

detected onsite only

06/12/1980 LLNL NNSS U20af Shaft

873 Huron King  06/24/1980 LANL/DoD NNSS U3ky Shaft

874

Tafi

Gas sampling release of radioactivity 

detected onsite only

07/25/1980 LLNL NNSS U20ae Shaft

875

Verdello 

Drillback and cementback release of 

radioactivity detected onsite only

07/31/1980 LANL NNSS U3ku Shaft

876 Bonarda  09/25/1980 LANL NNSS U3gv Shaft

877

Riola

Accidental release of radioactivity 

detected offsite

Gas sampling release of radioactivity 

detected onsite only

09/25/1980 LLNL NNSS U2eq Shaft

Operation Guardian

878 Dutchess 10/24/1980 LANL/UK NNSS U7bm Shaft

879

Miners Iron

Controlled release of radioactivity 

detected onsite only

10/31/1980 LANL/DoD NNSS U12n.11 Tunnel

880 Dauphin  11/14/1980 LLNL NNSS U9cq Shaft

881 Serpa 12/17/1980 LLNL/UK NNSS U19ai Shaft

882 Baseball  01/15/1981 LANL NNSS U7ba Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
97

Operation Guardian – Continued

18:00:00.12 37.010848 -116.033049 3,968 -1,160 Weapons Related Less than 20 kt 883

15:00:00.08 37.181851 -116.085121 4,538 -656 Weapons Related Less than 20 kt 884

14:35:00.08 37.177285 -116.085633 4,506 -1,061 Weapons Related Less than 20 kt 885

16:00:00.09 37.101805 -116.004931 4,388 -1,050 Weapons Related Less than 20 kt 886

18:00:00.08 37.303343 -116.326480 6,891 -2,090 Weapons Related 20 to 150 kt 887

14:00:00.10 37.128556 -116.034645 4,242 -1,120 Weapons Related Less than 20 kt 888

15:00:00.10 37.088650 -116.020237 4,220 -680 Weapons Related Less than 20 kt 889

13:41:00.09 37.153695 -116.035946 4,298 -656 Weapons Related Less than 20 kt 890

14:31:00.09 37.160368 -116.067395 4,342 -965 Weapons Related Less than 20 kt 891

15:00:00.10 37.058040 -116.048943 4,062 -1,002 Weapons Related Less than 20 kt 892

15:00:00.09 37.008471 -116.024667 3,964 -699 Weapons Related Less than 20 kt 893

Operation Praetorian

19:00:00.10 37.081571 -116.009622 4,224 -1,549 Weapons Related 20 to 150 kt 894

20:00:09.09 37.076273 -116.069360 4,131 -1,460 Weapons Related 20 to 150 kt 895

15:00:00.10 37.108104 -116.049847 4,166 -1,697 Joint US-UK 20 to 150 kt 896

15:00:00.10 37.148387 -116.071710 4,332 -1,621 Weapons Related 20 to 150 kt 897

21:05:00.09 37.114478 -116.123752 4,510 -1,099 Weapons Related Less than 20 kt 898

16:00:00.10 37.091295 -116.052102 4,134 -2,096 Weapons Related 139 kt 899

14:55:00.08 37.224276 -116.463540 6,234 -2,093 Weapons Related 20 to 150 kt 900

15:25:00.09 37.347921 -116.316986 6,898 -2,098 Weapons Related 20 to 150 kt 901

18:00:00.09 37.016770 -116.010735 3,952 -1,169 Weapons Related Less than 20 kt 902

18:05:00.09 37.255785 -116.423251 6,445 -1,869 Joint US-UK 20 to 150 kt 903

20:00:00.08 37.116792 -116.127779 4,562 -1,100 Weapons Related Less than 20 kt 904

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

96

Operation Guardian – Continued

883 Clairette 02/05/1981 LANL NNSS U3kr Shaft

884 Seco 02/25/1981 LLNL NNSS U8l Shaft

885

Vide

Gas sampling release of radioactivity 

detected onsite only

04/30/1981 LLNL NNSS U8k Shaft

886 Aligote 05/29/1981 LANL NNSS U7bg Shaft

887 Harzer 06/06/1981 LLNL NNSS U19aj Shaft

888

Niza 

Drillback and gas sampling release of 

radioactivity detected onsite only

07/10/1981 LLNL NNSS U9cr Shaft

889 Pineau 07/16/1981 LANL NNSS U7ao Shaft

890 Havarti  08/05/1981 LLNL NNSS U10bg Shaft

891

Islay 

Drillback release of radioactivity 

detected onsite only

08/27/1981 LLNL NNSS U2er Shaft

892

Trebbiano 

Drillback release of radioactivity 

detected onsite only

09/04/1981 LANL NNSS U3lj Shaft

893 Cernada 09/24/1981 LANL NNSS U3kk Shaft

Operation Praetorian

894 Paliza  10/01/1981 LANL NNSS U7bd Shaft

895

Tilci 

Gas sampling release of radioactivity 

detected onsite only

11/11/1981 LLNL NNSS U4ak Shaft

896 Rousanne  11/12/1981 LANL/UK NNSS U4p Shaft

897

Akavi 

Gas sampling release of radioactivity 

detected onsite only

12/03/1981 LLNL NNSS U2es Shaft

898

Caboc 

Drillback and gas sampling release of 

radioactivity detected onsite only

12/16/1981 LLNL NNSS U2cp Shaft

899 Jornada  01/28/1982 LANL NNSS U4j Shaft

900

Molbo

Gas sampling release of radioactivity 

detected onsite only

02/12/1982 LLNL NNSS U20ag Shaft

901 Hosta 02/12/1982 LANL NNSS U19ak Shaft

902 Tenaja  04/17/1982 LANL NNSS U3lh Shaft

903

Gibne

Drillback release of radioactivity 

detected onsite only

04/25/1982 LLNL/UK NNSS U20ah Shaft

904 Kryddost 05/06/1982 LLNL NNSS U2co Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
99

Operation Praetorian – Continued

18:17:00.11 37.069013 -116.046331 4,083 -1,850 Weapons Related 20 to 150 kt 905

14:00:00.08 37.114180 -116.017448 4,391 -945 Weapons Related Less than 20 kt 906

14:15:00.09 37.236163 -116.371062 6,775 -2,098 Weapons Related 20 to 150 kt 907

20:05:00.08 37.102259 -116.075843 4,200 -1,312 Weapons Related 20 to 150 kt 908

14:00:00.09 37.084158 -116.007415 4,248 -2,099 Weapons Related 138 kt 909

15:00:00.00 37.189744 -116.048555 4,387 -710 Weapons Related Less than 20 kt 910

14:00:00.09 37.019686 -116.016537 3,975 -750 Weapons Related Less than 20 kt 911

16:00:00.09 37.211995 -116.207512 7,412 -1,390 Weapons Effects Less than 20 kt 912

16:00:00.09 37.211973 -116.207639 7,417 -1,339 Weapons Effects Less than 20 kt 913

17:00:00.09 37.174702 -116.088666 4,507 -1,480 Weapons Related 20 to 150 kt 914

13:30:00.10 37.091256 -116.045756 4,137 -1,848 Weapons Related Less than 150 kt 915

Operation Phalanx

19:17:00.10 37.023620 -116.032947 3,984 -1,201 Weapons Related Less than 20 kt 916

15:20:00.09 37.080135 -116.072758 4,144 -1,350 Weapons Related 20 to 150 kt 917

16:00:00.10 37.056103 -116.046214 4,058 -899 Weapons Related Less than 20 kt 918

17:00:00.09 37.162769 -116.064219 4,332 -1,125 Weapons Related Less than 20 kt 919

20:20:00.09 37.300630 -116.460926 6,345 -1,781 Weapons Related 20 to 150 kt 920

19:05:00.12 37.072790 -116.046825 4,088 -1,749 Weapons Related Less than 150 kt 921

13:53:00.08 37.111465 -116.023298 4,339 -869 Joint US-UK Less than 20 kt 922

15:20:00.08 37.145593 -116.090089 4,383 -1,280 Weapons Related Less than 20 kt 923

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

98

Operation Praetorian – Continued

905

Bouschet 

Cementback release of radioactivity 

detected onsite only

05/07/1982 LANL NNSS U3la Shaft

906 Kesti 06/16/1982 LLNL NNSS U9cn Shaft

907 Nebbiolo 06/24/1982 LANL NNSS U19ae Shaft

908

Monterey 

Drillback release of radioactivity 

detected onsite only

07/29/1982 LLNL NNSS U4aj Shaft

909 Atrisco  08/05/1982 LANL NNSS U7bp Shaft

910 Queso 08/11/1982 LLNL NNSS U10bf Shaft

911 Cerro 09/02/1982 LANL NNSS U3lf Shaft

912

Diamond Ace

Simultaneous with Huron Landing

Controlled release of radioactivity 

detected onsite only

09/23/1982 LLNL/DoD NNSS U12n.15 Tunnel

913

Huron Landing

Simultaneous with Diamond Ace

Controlled release of radioactivity 

detected onsite only

09/23/1982 LANL/DoD NNSS U12n.15 Tunnel

914

Frisco 

Drillback release of radioactivity 

detected onsite only

09/23/1982 LLNL NNSS U8m Shaft

915 Borrego 09/29/1982 LANL NNSS U7br Shaft

Operation Phalanx

916 Seyval  11/12/1982 LANL NNSS U3lm Shaft

917

Manteca 

Drillback release of radioactivity 

detected onsite only

12/10/1982 LLNL NNSS U4al Shaft

918 Coalora  02/11/1983 LANL NNSS U3lo Shaft

919

Cheedam 

Drillback and gas sampling release of 

radioactivity detected onsite only

02/17/1983 LLNL NNSS U2et Shaft

920 Cabra 03/26/1983 LLNL NNSS U20aj Shaft

921

Turquoise 

Cementback release of radioactivity 

detected onsite only

04/14/1983 LANL NNSS U7bu Shaft

922

Armada 

Drillback release of radioactivity 

detected onsite only

04/22/1983 LLNL/UK NNSS U9cs Shaft

923

Crowdie 

Drillback and gas sampling release of 

radioactivity detected onsite only

05/05/1983 LLNL NNSS U2fe Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
101

Operation Phalanx – Continued

14:30:00.09 37.208676 -116.205904 7,401 -1,244 Weapons Effects Less than 20 kt 924

15:00:00.09 37.102858 -116.006568 4,392 -1,261 Weapons Related Less than 20 kt 925

17:10:00.09 37.157569 -116.090101 4,441 -1,050 Weapons Related Less than 20 kt 926

13:33:00.10 37.118948 -116.089777 4,275 -1,070 Weapons Related Less than 20 kt 927

14:00:00.12 36.997640 -116.003537 3,946 -1,050 Weapons Related Less than 20 kt 928

14:00:00.09 37.192891 -116.034909 4,411 -655 Weapons Related Less than 20 kt 929

14:00:00.08 37.272710 -116.355916 6,692 -2,046 Weapons Related 143 kt 930

15:00:00.09 37.209695 -116.210129 7,401 -1,328 Weapons Effects Less than 20 kt 931

16:25:00.08

16:25:00.08

37.121309

37.121309

-116.056452

-116.056452

4,209

4,209

-960

-1,400

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 932

15:00:00.12 37.105563 -116.050269 4,159 -1,747 Weapons Related Less than 150 kt 933

15:00:00.09 37.053360 -116.021222 4,048 -600 Safety Experiment Less than 20 kt 934

Operation Fusileer

16:00:00.11 37.012705 -116.046567 3,987 -800 Weapons Related Less than 20 kt 935

18:30:00.09 37.140400 -116.072939 4,311 -1,690 Weapons Related 20 to 150 kt 936

15:30:00.08 37.112649 -116.122575 4,499 -1,273 Weapons Related 20 to 150 kt 937

17:00:00.11 37.221336 -116.181950 6,811 -1,184 Weapons Effects Less than 20 kt 938

17:45:00.09 37.065718 -116.047164 4,079 -2,095 Weapons Related 20 to 150 kt 939

14:30:00.08 37.146392 -116.084933 4,366 -1,050 Weapons Related Less than 20 kt 940

19:05:00.09 37.106175 -116.023250 4,328 -1,857 Joint US-UK 20 to 150 kt 941

13:50:00.09 37.198428 -116.054836 4,522 -688 Weapons Related Less than 20 kt 942

16:00:00.08 37.092463 -116.094092 4,241 -680 Weapons Related Less than 20 kt 943

13:04:00.10 37.103086 -116.048917 4,146 -1,968 Weapons Related 20 to 150 kt 944

15:15:00.09 37.000331 -116.043928 3,961 -1,250 Weapons Related 20 to 150 kt 945

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

100

Operation Phalanx – Continued

924

Mini Jade

Controlled release of radioactivity 

detected onsite only

05/26/1983 LANL/DoD NNSS U12n.12 Tunnel

925 Fahada 05/26/1983 LANL NNSS U7bh Shaft

926

Danablu 

Drillback release of radioactivity 

detected onsite only

06/09/1983 LLNL NNSS U2eu Shaft

927

Laban 

Drillback release of radioactivity 

detected onsite only

08/03/1983 LLNL NNSS U2ff Shaft

928 Sabado 08/11/1983 LANL NNSS U3lc Shaft

929

Jarlsberg 

Drillback release of radioactivity 

detected onsite only

08/27/1983 LLNL NNSS U10ca Shaft

930 Chancellor 09/01/1983 LANL NNSS U19ad Shaft

931 Tomme/Midnight Zephyr 09/21/1983 LLNL/DoD NNSS U12n.18 Tunnel

932

Branco 

Branco-Herkimer 

Simultaneous, same hole

09/21/1983

09/21/1983

LLNL

LLNL

NNSS

NNSS

U2ew

U2ew

Shaft

Shaft

933 Techado 09/22/1983 LANL NNSS U4o Shaft

934 Navata 09/29/1983 LANL NNSS U3lb Shaft

Operation Fusileer

935 Muggins  12/09/1983 LANL NNSS U3ls Shaft

936

Romano 

Cementback release of radioactivity 

detected onsite only

12/16/1983 LLNL NNSS U2ex Shaft

937

Gorbea

Drillback and gas sampling release of 

radioactivity detected onsite only

01/31/1984 LLNL NNSS U2cq Shaft

938 Midas Myth/Milagro  02/15/1984 LANL/DoD NNSS U12t.04 Tunnel

939 Tortugas  03/01/1984 LANL NNSS U3gg Shaft

940

Agrini 

Accidental, controlled, and drillback 

release of radioactivity detected 

onsite only

03/31/1984 LLNL NNSS U2ev Shaft

941 Mundo  05/01/1984 LANL/UK NNSS U7bo Shaft

942

Orkney

Drillback release of radioactivity 

detected onsite only

05/02/1984 LLNL NNSS U10be Shaft

943 Bellow  05/16/1984 LLNL NNSS U4ac Shaft

944

Caprock 

Gas sampling release of radioactivity 

detected onsite only

05/31/1984 LANL NNSS U4q Shaft

945 Duoro  06/20/1984 LANL NNSS U3lv Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
103

Operation Fusileer – Continued

14:00:00.09 37.191937 -116.035247 4,404 -656 Weapons Related Less than 20 kt 946

15:30:00.08 37.267711 -116.411530 6,593 -2,100 Weapons Related 20 to 150 kt 947

15:00:00.09 37.016758 -116.008512 3,967 -1,096 Weapons Related Less than 20 kt 948

14:45:00.00 37.143840 -116.126129 4,604 -1,030 Weapons Related Less than 20 kt 949

14:45:00.10 37.089748 -116.000235 4,324 -1,198 Weapons Related Less than 20 kt 950

14:00:00.00 37.086639 -116.072046 4,149 -1,585 Weapons Related 20 to 150 kt 951

Operation Grenadier

18:14:00.10 37.085180 -116.053674 4,119 -1,149 Weapons Related Less than 20 kt 952

16:40:00.09 37.000056 -116.018245 3,952 -1,221 Weapons Related Less than 20 kt 953

19:40:00.09 37.270022 -116.498473 6,124 -1,792 Joint US-UK 20 to 150 kt 954

14:45:00.00 37.281310 -116.306296 7,038 -2,100 Weapons Related 20 to 150 kt 955

16:20:00.11 37.011898 -116.045573 3,985 -803 Weapons Related Less than 20 kt 956

16:31:00.10 37.058025 -116.046198 4,062 -1,396 Weapons Related 20 to 150 kt 957

18:30:00.08 37.179926 -116.089828 4,556 -1,690 Weapons Related 20 to 150 kt 958

20:00:00.09 37.094763 -116.033212 4,192 -2,094 Weapons Related 20 to 150 kt 959

23:15:00.09 37.200782 -116.208047 7,345 -1,275 Weapons Effects Less than 20 kt 960

15:20:00.08 37.253352 -116.326091 6,928 -2,166 Weapons Related 20 to 150 kt 961

15:15:00.08 37.247799 -116.489947 6,235 -1,995 Weapons Related 20 to 150 kt 962

17:30:00.09 37.088265 -116.084808 4,189 -955 Weapons Related Less than 20 kt 963

18:03:00.08 37.124049 -116.122860 4,526 -1,250 Weapons Related Less than 20 kt 964

14:00:00.09 37.297192 -116.438962 6,462 -1,960 Weapons Related 20 to 150 kt 965

13:00:00.08 37.111034 -116.015246 4,405 -599 Weapons Related Less than 20 kt 966

16:25:00.09 37.002253 -116.043912 3,964 -1,088 Weapons Related Less than 20 kt 967

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

102

Operation Fusileer – Continued

946 Normanna  07/12/1984 LLNL NNSS U10cb Shaft

947

Kappeli

Accidental release of radioactivity 

detected onsite only

07/25/1984 LLNL NNSS U20am Shaft

948 Correo  08/02/1984 LANL NNSS U3lw Shaft

949 Wexford  08/30/1984 LLNL NNSS U2cr Shaft

950 Dolcetto  08/30/1984 LANL NNSS U7bi Shaft

951

Breton 

Drillback and gas sampling release of 

radioactivity detected onsite only

09/13/1984 LLNL NNSS U4ar Shaft

Operation Grenadier

952 Vermejo  10/02/1984 LANL NNSS U4r Shaft

953 Villita  11/10/1984 LANL NNSS U3ld Shaft

954 Egmont 12/09/1984 LLNL/UK NNSS U20al Shaft

955

Tierra

Accidental release of radioactivity 

detected onsite only

12/15/1984 LLNL NNSS U19ac Shaft

956 Minero  12/20/1984 LANL NNSS U3lt Shaft

957

Vaughn

Drillback release of radioactivity 

detected onsite only

03/15/1985 LANL NNSS U3lr Shaft

958 Cottage  03/23/1985 LLNL NNSS U8j Shaft

959 Hermosa 04/02/1985 LANL NNSS U7bs Shaft

960

Misty Rain

Controlled release of radioactivity 

detected offsite

04/06/1985 LLNL/DoD NNSS U12n.17 Tunnel

961 Towanda 05/02/1985 LANL NNSS U19ab Shaft

962

Salut

Drillback and gas sampling release of 

radioactivity detected onsite only

06/12/1985 LLNL NNSS U20ak Shaft

963

Ville 

Drillback and gas sampling release of 

radioactivity detected onsite only

06/12/1985 LLNL NNSS U4am Shaft

964

Maribo

Drillback release of radioactivity 

detected onsite only

06/26/1985 LLNL NNSS U2cs Shaft

965

Serena

Drillback release of radioactivity 

detected onsite only

07/25/1985 LLNL NNSS U20an Shaft

966

Cebrero

Gas sampling release of radioactivity 

detected onsite only

08/14/1985 LLNL NNSS U9cw Shaft

967 Chamita  08/17/1985 LANL NNSS U3lz Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
105

Operation Grenadier – Continued

14:15:00.08 37.089762 -116.002635 4,300 -1,197 Weapons Related Less than 20 kt 968

Operation Charioteer

21:40:00.13 37.209113 -116.205988 7,317 -1,217 Weapons Effects Less than 20 kt 969

23:20:00.09 37.209621 -116.210960 7,403 -1,326 Weapons Effects Less than 20 kt 970

21:35:00.09 37.109900 -116.122255 4,488 -1,363 Weapons Related 20 to 150 kt 971

16:00:00.09 37.050560 -116.037006 4,032 -644 Weapons Related Less than 20 kt 972

15:00:00.07 37.053219 -116.046237 4,052 -1,901 Joint US-UK 20 to 150 kt 973

19:01:00.09 37.237751 -116.473638 6,279 -1,800 Weapons Related 20 to 150 kt 974

16:15:00.08 37.082957 -116.066908 4,136 -2,000 Weapons Related 29 kt 975

14:08:30.10 37.218276 -116.183982 6,924 -1,294 Weapons Effects Less than 20 kt 976

15:12:30.07 37.011608 -116.046918 3,985 -851 Weapons Related Less than 20 kt 977

14:30:00.09 37.264063 -116.441091 6,503 -1,992 Weapons Related 20 to 150 kt 978

13:59:00.08 37.124987 -116.061260 4,219 -1,575 Weapons Related Less than 20 kt 979

15:04:00.06 37.098243 -116.016380 4,317 -1,700 Weapons Related 20 to 150 kt 980

20:27:45.09 37.264530 -116.500200 6,155 -1,801 Joint US-UK 20 to 150 kt 981

21:00:00.06 37.278620 -116.356493 6,707 -2,057 Weapons Related 119 kt 982

15:05:00.09 37.142700 -116.071988 4,312 -1,248 Weapons Related Less than 20 kt 983

16:09:00.06 37.239678 -116.368643 6,710 -1,598 Weapons Related Less than 20 kt 984

14:57:00.11 37.069032 -116.050561 4,085 -1,649 Weapons Related Less than 20 kt 985

22:30:00.10 37.300029 -116.308310 6,978 -2,020 Weapons Related 20 to 150 kt 986

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

104

Operation Grenadier – Continued

968 Ponil  09/27/1985 LANL NNSS U7bv Shaft

Operation Charioteer

969

Mill Yard

Controlled release of radioactivity 

detected onsite only

10/09/1985 LANL/DoD NNSS U12n.20 Tunnel

970

Diamond Beech

Controlled release of radioactivity 

detected onsite only

10/09/1985 LLNL/DoD NNSS U12n.19 Tunnel

971

Roquefort 

Gas sampling release of radioactivity 

detected onsite only

10/16/1985 LLNL NNSS U4as Shaft

972

Abo

Drillback release of radioactivity 

detected onsite only

10/30/1985 LANL NNSS U3mc Shaft

973 Kinibito  12/05/1985 LANL/UK NNSS U3me Shaft

974 Goldstone 12/28/1985 LLNL NNSS U20ao Shaft

975

Glencoe 

Drillback release of radioactivity 

detected offsite

03/22/1986 LANL NNSS U4i Shaft

976

Mighty Oak

Controlled release of radioactivity 

detected offsite

04/10/1986 LLNL/DoD NNSS U12t.08 Tunnel

977 Mogollon  04/20/1986 LANL NNSS U3li Shaft

978

Jefferson

Drillback release of radioactivity 

detected onsite only

04/22/1986 LLNL NNSS U20ai Shaft

979

Panamint

Drillback and gas sampling release of 

radioactivity detected onsite only

05/21/1986 LLNL NNSS U2gb Shaft

980 Tajo  06/05/1986 LANL NNSS U7bl Shaft

981 Darwin 06/25/1986 LLNL/UK NNSS U20aq Shaft

982

Cybar

Cementback release of radioactivity 

detected onsite only

07/17/1986 LANL NNSS U19ar Shaft

983

Cornucopia 

Gas sampling release of radioactivity 

detected onsite only

07/24/1986 LLNL NNSS U2gaS Shaft

984 Galveston 09/04/1986 LANL NNSS U19af Shaft

985 Aleman 09/11/1986 LANL NNSS U3kz Shaft

986

Labquark

Accidental release of radioactivity 

detected onsite only

09/30/1986 LLNL NNSS U19an Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
107

Operation Musketeer

19:25:00.09 37.220157 -116.462524 6,227 -1,985 Weapons Related 20 to 150 kt 987

16:00:00.07 37.100381 -116.048939 4,144 -1,946 Weapons Related 20 to 150 kt 988

17:50:05.09 37.262907 -116.412571 6,621 -2,083 Weapons Related 20 to 150 kt 989

15:20:00.08

15:20:00.08

15:20:00.08

37.181096

37.181096

37.181096

-116.049312

-116.049312

-116.049312

4,322

4,322

4,322

-860

-740

-610

Safety Experiment

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

990

16:45:00.07 37.010640 -116.045556 3,981 -979 Weapons Related Less than 20 kt 991

18:28:00.09 37.210189 -116.209439 7,383 -1,308 Weapons Effects Less than 20 kt 992

13:40:00.00 37.247830 -116.510033 6,240 -1,785 Weapons Related 20 to 150 kt 993

15:00:00.09 36.983093 -116.005447 3,932 -1,049 Weapons Related Less than 20 kt 994

13:30:00.09 37.232994 -116.424011 6,464 -2,051 Weapons Related 20 to 150 kt 995

15:20:00.08 37.193506 -116.035883 4,413 -666 Weapons Related Less than 20 kt 996

16:00:00.18 37.219905 -116.178662 6,706 -1,054 Weapons Effects Less than 20 kt 997

16:05:00.10 36.998545 -116.043942 3,957 -1,047 Weapons Related Less than 20 kt 998

19:00:00.08 37.103504 -116.024223 4,300 -1,597 Joint US-UK 20 to 150 kt 999

14:00:00.09 37.060912 -116.046175 4,067 -2,095 Weapons Related 20 to 150 kt 1000

15:00:00.06 37.227939 -116.375590 6,799 -2,015 Weapons Related 20 to 150 kt 1001

Operation Touchstone

16:00:00.09 37.141850 -116.079570 4,335 -1,780 Weapons Related 20 to 150 kt 1002

16:30:00.09 36.996362 -116.005332 3,946 -600 Weapons Related Less than 20 kt 1003

16:30:00.08 37.234603 -116.164246 6,407 -888 Weapons Effects Less than 20 kt 1004

18:10:00.09 37.314382 -116.472374 6,319 -1,777 Weapons Related 20 to 150 kt 1005

17:15:00.08 37.013110 -116.045193 3,985 -804 Weapons Related Less than 20 kt 1006

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

106

Operation Musketeer

987

Belmont

Drillback and gas sampling release of 

radioactivity detected onsite only

10/16/1986 LLNL NNSS U20as Shaft

988

Gascon 

Gas sampling release of radioactivity 

detected onsite only

11/14/1986 LANL NNSS U4t Shaft

989

Bodie

Drillback and accidental release of 

radioactivity detected onsite only

12/13/1986 LLNL NNSS U20ap Shaft

990

Hazebrook-Apricot (Orange)

Hazebrook-Checkerberry (Red)

Hazebrook-Emerald (Green)

Simultaneous, same hole

Hazebrook-Apricot (Orange), 

-Checkerberry (Red), -Emerald 

(Green): Gas sampling release of 

radioactivity detected onsite only

02/03/1987

02/03/1987

02/03/1987

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U10bh

U10bh

U10bh

Shaft

Shaft

Shaft

991 Tornero  02/11/1987 LANL NNSS U3ll Shaft

992 Middle Note 03/18/1987 LLNL/DoD NNSS U12n.21 Tunnel

993 Delamar 04/18/1987 LLNL NNSS U20at Shaft

994 Presidio 04/22/1987 LANL NNSS U6d Shaft

995

Hardin

Gas sampling release of radioactivity 

detected onsite only

04/30/1987 LLNL NNSS U20av Shaft

996 Brie  06/18/1987 LLNL NNSS U10cc Shaft

997

Mission Ghost

Controlled release of radioactivity 

detected onsite only

06/20/1987 LANL/DoD NNSS U12t.09 Tunnel

998

Panchuela 

Drillback release of radioactivity 

detected onsite only

06/30/1987 LANL NNSS U3mg Shaft

999 Midland 07/16/1987 LANL/UK NNSS U7by Shaft

1000 Tahoka  08/13/1987 LANL NNSS U3mf Shaft

1001

Lockney

Drillback release of radioactivity 

detected onsite only

09/24/1987 LANL NNSS U19aq Shaft

Operation Touchstone

1002

Borate 

Drillback release of radioactivity 

detected onsite only

10/23/1987 LLNL NNSS U2ge Shaft

1003 Waco 12/01/1987 LANL NNSS U3lu Shaft

1004 Mission Cyber 12/02/1987 LLNL/DoD NNSS U12p.02 Tunnel

1005 Kernville 02/15/1988 LLNL NNSS U20ar Shaft

1006 Abilene  04/07/1988 LANL NNSS U3mn Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
109

Operation Touchstone – Continued

15:35:00.11 37.124387 -116.072996 4,249 -1,519 Weapons Related Less than 150 kt 1007

22:30:00.14 37.032437 -115.988170 4,092 -1,153 Weapons Related Less than 150 kt 1008

13:00:00.09 37.260082 -116.441965 6,521 -2,035 Weapons Related Less than 150 kt 1009

14:00:00.08 37.166110 -116.073116 4,384 -780 Safety Experiment Less than 150 kt 1010

14:00:00.08 37.166110 -116.073116 4,384 -680 Weapons Related Less than 150 kt 1011

15:05:30.07 37.252392 -116.377565 6,534 -2,041 Weapons Related Less than 150 kt 1012

17:00:00.09 37.297104 -116.307420 6,986 -2,020 Weapons Related 100 to 150 kt 1013

18:30:00.08

18:30:00.08

36.991132

36.988660

-116.018872

-116.018890

3,945

3,943

-950

-950

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 1014

18:00:00.09 37.085884 -116.069388 4,145 -1,605 Weapons Related Less than 150 kt 1015

Operation Cornerstone

14:00:00.08 37.088950 -116.050132 4,120 -2,099 Weapons Related Less than 150 kt 1016

20:15:00.08

20:15:00.08

36.991144

36.988677

-116.021947

-116.021971

3,945

3,942

-951

-951

Weapons Related

Weapons Related

Less than 20 kt

Less than 20 kt 1017

15:15:00.08

15:15:00.08

37.175270

37.175270

-116.092609

-116.092609

4,542

4,542

-1,260

-1,210

Safety Experiment

Safety Experiment

Less than 20 kt

Less than 20 kt 1018

20:30:00.06 37.198995 -116.210314 7,413 -1,312 Weapons Effects Less than 150 kt 1019

20:06:00.06 37.076736 -116.001481 4,244 -1,654 Weapons Related 20 to 150 kt 1020

16:15:00.08

16:15:00.08

37.128444

37.128444

-116.122829

-116.122829

4,526

4,526

-1,415

-1,215

Safety Experiment

Weapons Related

Less than 20 kt

Less than 20 kt

1021

14:05:00.09 37.142791 -116.067808 4,289 -1,640 Weapons Related 20 to 150 kt 1022

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

108

Operation Touchstone – Continued

1007

Schellbourne 

Drillback and gas sampling release of 

radioactivity detected onsite only

05/13/1988 LLNL NNSS U2gf Shaft

1008 Laredo  05/21/1988 LANL NNSS U3mh Shaft

1009

Comstock

Gas sampling release of radioactivity 

detected onsite only

06/02/1988 LLNL NNSS U20ay Shaft

1010 Nightingale

Same hole with Rhyolite 06/22/1988 LLNL NNSS U2ey Shaft

1011 Rhyolite

Same hole with Nightingale 06/22/1988 LLNL NNSS U2ey Shaft

1012 Alamo 07/07/1988 LANL NNSS U19au Shaft

1013

Kearsarge

The only Joint Verification Experiment 

conducted on the NNSS

08/17/1988 LLNL NNSS U19ax Shaft

1014

Harlingen-A 

Harlingen-B

Simultaneous, separate holes

08/23/1988

08/23/1988

LANL

LANL

NNSS

NNSS

U6g

U6h

Shaft

Shaft

1015

Bullfrog 

Drillback and gas sampling release of 

radioactivity detected onsite only

08/30/1988 LLNL NNSS U4au Shaft

Operation Cornerstone

1016 Dalhart  10/13/1988 LANL NNSS U4u Shaft

1017

Monahans-A 

Monahans-B 

Simultaneous, separate holes

11/09/1988

11/09/1988

LANL

LANL

NNSS

NNSS

U3lk

U6i

Shaft

Shaft

1018

Kawich A-Blue

Kawich A-White

Simultaneous, same hole

12/09/1988

12/09/1988

LLNL

LLNL

NNSS

NNSS

U8n

U8n

Shaft

Shaft

1019

Misty Echo

Gas sampling release of radioactivity 

detected onsite only

12/10/1988 LANL/DoD NNSS U12n.23 Tunnel

1020 Texarkana  02/10/1989 LANL NNSS U7ca Shaft

1021

Kawich-Black 

Kawich-Red 

Simultaneous, same hole

Kawich-Black, -Red: Drillback release 

of radioactivity detected onsite only

02/24/1989

02/24/1989

LLNL

LLNL

NNSS

NNSS

U2cu

U2cu

Shaft

Shaft

1022 Ingot 03/09/1989 LLNL NNSS U2gg Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
111

Operation Cornerstone – Continued

13:10:00.09

13:10:00.09

13:10:00.09

37.107563

37.107563

37.107563

-116.121757

-116.121757

-116.121757

4,479

4,479

4,479

-1,100

-1,280

-1,324

Weapons Related

Safety Experiment

Safety Experiment

Less than 20 kt

Less than 20 kt

Less than 20 kt

1023

18:07:00.02 37.085818 -116.056000 4,125 -1,305 Weapons Related Less than 20 kt 1024

21:15:00.08 37.282822 -116.413194 6,585 -1,785 Weapons Related 20 to 150 kt 1025

15:30:00.02 37.275406 -116.354444 6,712 -2,100 Weapons Related 20 to 150 kt 1026

15:00:00.10 37.235839 -116.163771 6,377 -857 Weapons Effects Less than 20 kt 1027

Operation Aqueduct

15:30:00.09 37.263049 -116.491615 6,146 -1,850 Weapons Related 20 to 150 kt 1028

20:20:00.12 37.106469 -116.014246 4,391 -802 Weapons Related Less than 20 kt 1029

15:00:00.09 37.231040 -116.410277 6,573 -1,971 Joint US-UK 20 to 150 kt 1030

22:00:00.06

22:00:00.06

37.025813

37.025813

-116.032072

-116.032072

3,985

3,985

-646

-599

Safety Experiment

Safety Experiment

Less than 20 kt

Less than 20 kt 1031

16:00:00.08 37.112457 -116.056047 4,177 -1,540 Weapons Related 20 to 150 kt 1032

17:00:00.04 37.067623 -115.992991 4,257 -700 Weapons Related Less than 20 kt 1033

16:00:00.09 37.261551 -116.421002 6,486 -2,211 Weapons Related 20 to 150 kt 1034

18:15:00.00 36.992788 -116.005363 3,942 -1,150 Weapons Related Less than 20 kt 1035

15:00:00.00

15:00:00.06

37.206910

37.206822

-116.215115

-116.215129

7,359

7,359

-1,278

-1,278

Weapons Effects

Weapons Related

Less than 20 kt

Less than 20 kt

1036

16:15:00.00

16:15:00.00

37.038170

37.038170

-116.057667

-116.057667

4,047

4,047

-887

-840

Safety Experiment

Safety Experiment

Less than 20 kt

Less than 20 kt 1037

18:02:46.00 37.007098 -116.059089 3,995 -955 Weapons Related Less than 20 kt 1038

Operation Sculpin

17:30:00.08 37.247807 -116.495104 6,226 -1,969 Weapons Related 20 to 150 kt 1039

19:17:00.07 37.227365 -116.372127 6,753 -1,950 Joint US-UK 20 to 150 kt 1040

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

110

Operation Cornerstone – Continued

1023

Palisade-1 

Palisade-2 

Palisade-3 

Simultaneous, same hole

Palisade-1, -2, -3: Gas sampling 

release of radioactivity detected 

onsite only

05/15/1989

05/15/1989

05/15/1989

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U4at

U4at

U4at

Shaft

Shaft

Shaft

1024 Tulia 05/26/1989 LANL NNSS U4s Shaft

1025 Contact 06/22/1989 LLNL NNSS U20aw Shaft

1026 Amarillo 06/27/1989 LANL NNSS U19ay Shaft

1027

Disko Elm

Controlled and gas sampling release of 

radioactivity detected onsite only

09/14/1989 LLNL/DoD NNSS U12p.03 Tunnel

Operation Aqueduct

1028 Hornitos 10/31/1989 LLNL NNSS U20bc Shaft

1029 Muleshoe 11/15/1989 LANL NNSS U7bk Shaft

1030

Barnwell

Drillback and accidental release of 

radioactivity detected onsite only

12/08/1989 LLNL/UK NNSS U20az Shaft

1031

Whiteface-A

Whiteface-B

Simultaneous, same hole

12/20/1989

12/20/1989

LANL

LANL

NNSS

NNSS

U3lp

U3lp

Shaft

Shaft

1032

Metropolis

Drillback release of radioactivity 

detected onsite only

03/10/1990 LLNL NNSS U2gh Shaft

1033 Bowie 04/06/1990 LANL NNSS U3mk Shaft

1034 Bullion 06/13/1990 LLNL NNSS U20bd Shaft

1035 Austin 06/21/1990 LANL NNSS U6e Shaft

1036

Randsburg

Mineral Quarry

Simultaneous, separate drifts

Mineral Quarry: Controlled and gas 

sampling release of radioactivity 

detected onsite only

07/25/1990

07/25/1990

LLNL/DoD

LLNL/DoD

NNSS

NNSS

U12n.22a

U12n.22

Tunnel

Tunnel

1037

Sundown-A

Sundown-B

Simultaneous, same hole

09/20/1990

09/20/1990

LANL

LANL

NNSS

NNSS

U1d

U1d

Shaft

Shaft

1038 Ledoux 09/27/1990 LANL NNSS U1a.01 Shaft

Operation Sculpin

1039

Tenabo

Drillback release of radioactivity 

detected onsite only

10/12/1990 LLNL NNSS U20bb Shaft

1040

Houston

Drillback release of radioactivity 

detected onsite only

11/14/1990 LANL/UK NNSS U19az Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
113

Operation Sculpin – Continued

21:02:45.08

21:02:45.08

21:02:45.08

37.104317

37.104317

37.104317

-116.074901

-116.074901

-116.074901

4,204

4,204

4,204

-1,093

-1,450

-1,559

Weapons Related

Weapons Related

Safety Experiment

Less than 20 kt

Less than 20 kt

Less than 20 kt

1041

19:00:00.00 37.296027 -116.313786 7,037 -2,065 Weapons Related 20 to 150 kt 1042

15:30:00.07 37.245385 -116.442525 6,522 -2,105 Weapons Related 20 to 150 kt 1043

16:00:00.00 37.087287 -116.002657 -1,650 -1,650 Weapons Related Less than 20 kt 1044

19:00:00.08 37.225586 -116.429019 6,493 -2,159 Weapons Related 20 to 150 kt 1045

16:30:00.07 37.235678 -116.167307 6,392 -865 Weapons Effects Less than 20 kt 1046

Operation Julin

19:12:00.00 37.063384 -116.046158 4,067 -1,500 Weapons Related 20 to 150 kt 1047

18:35:00.07 37.096440 -116.070481 4,177 -1,500 Joint US-UK Less than 20 kt 1048

16:30:00.00 37.272398 -116.360660 6,694 -2,041 Weapons Related 20 to 150 kt 1049

16:30:00.00 37.234140 -116.158224 6,307 -774 Weapons Effects Less than 20 kt 1050

16:45:00.00 37.005372 -116.011008 3,956 -801 Weapons Related Less than 20 kt 1051

15:00:00.07

15:00:00.07

15:00:00.07

37.123873

37.123873

37.123873

-116.032112

-116.032112

-116.032112

4,251

4,251

4,251

-1,312

-1,247

-951

Safety Experiment

Safety Experiment

Weapons Related

Less than 20 kt

Less than 20 kt

Less than 20 kt

1052

17:00:00.08 37.206877 -116.210853 7,346 -1,264 Weapons Effects Less than 20 kt 1053

15:04:00.00 37.020632 -115.988778 4,051 -1,115 Weapons Related Less than 20 kt 1054

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

112

Operation Sculpin – Continued

1041

Coso-Bronze 

Coso-Gray 

Coso-Silver 

Simultaneous, same hole

03/08/1991

03/08/1991

03/08/1991

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U4an

U4an

U4an

Shaft

Shaft

Shaft

1042

Bexar

Cementback release of radioactivity 

detected onsite only

04/04/1991 LANL NNSS U19ba Shaft

1043 Montello 04/16/1991 LLNL NNSS U20bf Shaft

1044 Floydada 08/15/1991 LANL NNSS U7cb Shaft

1045

Hoya

Threshold Test Ban Treaty test; 

yield measurements taken by the 

Soviet Union as part of the treaty

09/14/1991 LLNL NNSS U20be Shaft

1046

Distant Zenith

Controlled and gas sampling release of 

radioactivity detected onsite only

09/19/1991 LANL/DoD NNSS U12p.04 Tunnel

Operation Julin

1047

Lubbock 

Drillback release of radioactivity 

detected onsite only

10/18/1991 LANL NNSS U3mt Shaft

1048 Bristol 11/26/1991 LLNL/UK NNSS U4av Shaft

1049

Junction

Threshold Test Ban Treaty test; 

yield measurements taken by the 

Soviet Union as part of the treaty

03/26/1992 LANL NNSS U19bg Shaft

1050

Diamond Fortune

Controlled release of radioactivity 

detected onsite only

04/30/1992 LANL/DoD NNSS U12p.05 Tunnel

1051 Victoria 06/19/1992 LANL NNSS U3kv Shaft

1052

Galena-Green

Galena-Orange

Galena-Yellow

Simultaneous, same hole

06/23/1992

06/23/1992

06/23/1992

LLNL

LLNL

LLNL

NNSS

NNSS

NNSS

U9cv

U9cv

U9cv

Shaft

Shaft

Shaft

1053

Hunters Trophy

Test to ensure reliability of 

U.S. deterrent forces

Gas sampling release of radioactivity 

detected onsite only

09/18/1992 LLNL/DoD NNSS U12n.24 Tunnel

1054

Divider

Test to ensure the safety of 

U.S. deterrent forces

Drillback release of radioactivity 

detected onsite only

09/23/1992 LANL NNSS U3ml Shaft

U.S. Nuclear Tests - By Date

Test

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
114

This page intentionally left blank.
Detonations - By Name
115

U.S. Nuclear Detonations – By Name 
117

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

19:00:00.10 37.065145 -116.031247 4,071 -1,424 Weapons Related 40 kt 240

15:00:00.04 37.029416 -116.012685 3,987 -1,291 Weapons Related 20 to 200 kt 659

17:15:00.08 37.013110 -116.045193 3,985 -804 Weapons Related Less than 20 kt 1006

22:00:00.00 11.590000 165.516700 0 523 Weapons Effects 21 kt 2

13:45:00.00 36.805100 -115.950200 3,140 1,060 Weapons Related 1 kt 7

14:00:00.00 37.083250 -116.024700 4,169 100 Weapons Related Less than 0.1 kt 16

17:00:00.00 36.797966 -115.936418 3,077 793 Weapons Effects 1 kt 23

16:00:00.09 37.050560 -116.037006 4,032 -644 Weapons Related Less than 20 kt 972

12:30:00.03 37.044975 -116.019919 4,022 -389 Safety Experiment Less than 20 kt 502

16:45:00.15 37.148555 -116.076866 4,353 -874 Plowshare 3 kt 368

18:30:00.14 37.046085 -116.021966 4,022 -856 Weapons Related Low 306

15:46:00.00 1.565000 -157.365000 0 2,900 Weapons Related 190 kt 227

14:45:00.04 37.008586 -115.996256 3,987 -788 Weapons Related Less than 20 kt 548

18:50:00.13 37.126802 -116.067248 4,256 -2,406 Weapons Related 20 to 200 kt 490

18:00:00.13 37.047200 -116.035232 4,027 -856 Weapons Related 6.4 kt 206

14:30:00.08 37.146392 -116.084933 4,366 -1,050 Weapons Related Less than 20 kt 940

13:53:00.15 37.163323 -116.081512 4,419 -742 Weapons Related Low 335

12:00:00.14 37.134409 -116.050724 4,202 -782 Weapons Related Less than 20 kt 477

17:00:00.04 37.030776 -116.035631 3,998 -998 Weapons Related Less than 20 kt 629

15:00:00.10 37.148387 -116.071710 4,332 -1,621 Weapons Related 20 to 150 kt 897

15:15:00.16 37.161994 -116.034024 4,337 -875 Weapons Related Less than 20 kt 711

15:05:30.07 37.252392 -116.377565 6,534 -2,041 Weapons Related Less than 150 kt 1012

14:57:00.11 37.069032 -116.050561 4,085 -1,649 Weapons Related Less than 20 kt 985

14:00:00.03 37.057143 -116.037199 4,046 -1,731 Weapons Related 20 to 200 kt 679

16:00:00.09 37.101805 -116.004931 4,388 -1,050 Weapons Related Less than 20 kt 886

18:00:00.04 37.011826 -115.985945 4,049 -789 Weapons Related Less than 20 kt 598

17:00:00.15 37.116630 -116.033647 4,258 -692 Weapons Related Low 279

17:02:00.00 1.380000 -157.195000 0 8,865 Weapons Related 782 kt 249

13:00:00.08 37.245010 -116.346905 6,876 -3,499 Weapons Related 200 to 1000 kt 730

15:10:29.49 37.164484 -116.077415 4,402 -738 Weapons Related 330 tons 400

15:30:00.16 37.147045 -116.050962 4,237 -600 Weapons Related Less than 20 kt 718

16:00:00.14 37.158968 -116.083968 4,420 -545 Weapons Related 4.4 kt 377

13:00:00.17 37.111732 -116.074569 4,225 -600 Safety Experiment Less than 20 kt 776

15:30:00.02 37.275406 -116.354444 6,712 -2,100 Weapons Related 20 to 150 kt 1026

18:00:00.14 37.122762 -116.029888 4,268 -747 Plowshare 5.2 kt 297

16:00:00.12 37.039478 -116.019280 4,007 -854 Weapons Related Low 344

116

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type

240 Aardvark  05/12/1962 LANL NNSS U3amS Shaft

659 Abeytas  11/05/1970 LANL NNSS U3gx Shaft

1006 Abilene  04/07/1988 LANL NNSS U3mn Shaft

2

Able 

(Operation Crossroads) 07/01/1946 LANL/DoD Bikini Atoll - - - - Airdrop

7

Able 

(Operation Ranger) 01/27/1951 LANL NNSS Area 5 Airdrop

16 Able 

(Operation Buster) 10/22/1951 LANL NNSS Area 7 Tower

23 Able 

(Operation Tumbler-Snapper) 04/01/1952 LANL/DoD NNSS Area 5 Airdrop

972 Abo 10/30/1985 LANL NNSS U3mc Shaft

502 Absinthe 05/26/1967 LANL NNSS U3ep Shaft

368 Ace  06/11/1964 LLNL NNSS U2n Shaft

306 Acushi  02/08/1963 LANL NNSS U3bg Shaft

227 Adobe 04/25/1962 LANL Christmas Island area - - - - Airdrop

548 Adze 05/28/1968 LANL NNSS U3fw Shaft

490 Agile  02/23/1967 LLNL NNSS U2v Shaft

206 Agouti  01/18/1962 LANL NNSS U3ao Shaft

940 Agrini  03/31/1984 LLNL NNSS U2ev Shaft

335 Ahtanum  09/13/1963 LLNL NNSS U2l Shaft

477 Ajax  11/11/1966 LLNL NNSS U9al Shaft

629 Ajo  01/30/1970 LANL NNSS U3gd Shaft

897 Akavi  12/03/1981 LLNL NNSS U2es Shaft

711 Akbar  11/09/1972 LLNL NNSS U10ax Shaft

1012 Alamo 07/07/1988 LANL NNSS U19au Shaft

985 Aleman 09/11/1986 LANL NNSS U3kz Shaft

679 Algodones  08/18/1971 LANL NNSS U3jn Shaft

886 Aligote 05/29/1981 LANL NNSS U7bg Shaft

598 Aliment 05/15/1969 LANL NNSS U3gj Shaft

279 Allegheny  09/29/1962 LLNL NNSS U9x Shaft

249 Alma 06/08/1962 LANL Christmas Island area - - - - Airdrop

730 Almendro 06/06/1973 LANL NNSS U19v Shaft

400 Alpaca 02/12/1965 LLNL NNSS U2a Shaft

718 Alumroot 02/14/1973 LLNL NNSS U9cj Shaft

377 Alva  08/19/1964 LLNL NNSS U2j Shaft

776 Alviso 06/11/1975 LLNL NNSS U2du Shaft

1026 Amarillo 06/27/1989 LANL NNSS U19ay Shaft

297 Anacostia  11/27/1962 LLNL NNSS U9i Shaft

344 Anchovy  11/14/1963 LANL NNSS U3bq Shaft
119

16:18:00.00 13.830000 -172.083000 0 10,260 Weapons Related 75 kt 280

22:25:00.03 37.004786 -116.029336 3,962 -1,485 Weapons Related Less than 20 kt 722

13:20:00.00 37.095488 -116.103616 4,026 300 Weapons Related 16 kt 33

17:00:00.12 37.187905 -116.208633 7,483 -1,319 Weapons Related 2.6 kt 195

18:06:00.00 11.670900 162.199600 0 10 Weapons Related 1.85 Mt 82

13:33:00.05 37.014335 -115.992794 4,009 -792 Weapons Related Less than 20 kt 675

12:55:00.00 37.095488 -116.103616 4,309 500 Weapons Related 14 kt 57

12:10:00.00 37.053040 -116.103504 4,236 500 Weapons Related 29 kt 62

16:58:00.15 37.124606 -116.040853 4,204 -292 Weapons Related Low 328

15:00:00.21 37.139529 -116.032156 4,275 -330 Safety Experiment Less than 20 kt 637

15:00:00.21 37.141741 -116.034879 4,256 -849 Weapons Related Less than 20 kt 637

15:00:00.21 37.139559 -116.037645 4,238 -820 Weapons Related Less than 20 kt 637

02:28:00.00 -38.800000 -10.900000 0 ~300 miles Weapons Effects 1-2 kt 155

02:28:00.00 -49.400000 -8.700000 0 ~300 miles Weapons Effects 1-2 kt 156

22:13:00.00 -49.500000 -10.450000 0 ~300 miles Weapons Effects 1-2 kt 157

15:00:00.16 37.127539 -116.049168 4,204 -546 Weapons Related Low 236

18:01:00.00 1.500000 -157.277000 0 5,030 Weapons Related 1.09 Mt 230

13:53:00.08 37.111465 -116.023298 4,339 -869 Joint US-UK Less than 20 kt 922

16:30:00.13 37.043530 -116.039826 4,019 -786 Weapons Related 7.1 kt 209

13:00:00.04 37.117085 -116.085023 4,261 -865 Weapons Related Less than 20 kt 655

13:00:00.04 37.113881 -116.087003 4,255 -1,015 Weapons Related Less than 20 kt 655

18:15:00.16 37.121398 -116.033196 4,249 -821 Weapons Related Less than 20 kt 712

16:00:00.09 37.100121 -116.008824 4,360 -1,591 Weapons Related 20 to 200 kt 663

14:35:00.16 37.154518 -116.035630 4,305 -600 Safety Experiment Less than 20 kt 835

15:09:00.17 37.123863 -116.068328 4,239 -1,083 Weapons Related Less than 20 kt 805

17:30:00.00 11.697275 165.280000 0 11 Weapons Related 319 kt 135

13:30:00.06 37.012445 -116.015917 3,967 -966 Weapons Related Less than 20 kt 707

14:00:00.09 37.084158 -116.007415 4,248 -2,099 Weapons Related 138 kt 909

15:30:00.04 37.047616 -116.000707 4,097 -789 Weapons Related Less than 20 kt 573

20:03:00.04 37.077878 -116.009355 4,203 -1,484 Weapons Related Less than 20 kt 384

18:15:00.00 36.992788 -116.005363 3,942 -1,150 Weapons Related Less than 20 kt 1035

16:00:00.17 37.137371 -116.039032 4,227 -1,004 Weapons Related Less than 20 kt 6634

16:00:00.17 37.141771 -116.040368 4,236 -1,245 Weapons Related Less than 20 kt 664

16:00:00.17 37.134061 -116.036318 4,234 -1,009 Weapons Related Less than 20 kt 664

16:00:00.17 37.142837 -116.034866 4,260 -961 Plowshare Less than 20 kt 664

16:02:00.00 1.565000 -157.365000 0 2,610 Weapons Related 410 kt 228

18:00:00.09 37.137325 -116.063944 4,273 -672 Weapons Related Less than 20 kt 864

18:00:00.10 37.105363 -116.012547 4,389 -1,071 Weapons Related Less than 20 kt 849

17:45:00.07 37.233439 -116.369355 6,781 -2,204 Weapons Related 20 to 150 kt 834

15:00:00.10 36.993912 -116.024975 3,948 -750 Weapons Related Less than 20 kt 863

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

118

280 Androscoggin 10/02/1962 LLNL Johnston Island area - - - - Airdrop

722 Angus  04/25/1973 LANL NNSS U3jg Shaft

33 Annie 03/17/1953 LANL NNSS Area 3 Tower

195 Antler 09/15/1961 LLNL NNSS U12e.03a Tunnel

82 Apache 07/08/1956 LLNL Enewetak Atoll - - - - Barge

675 Apodaca 07/21/1971 LANL NNSS U3gs Shaft

57 Apple-1 03/29/1955 LANL NNSS Area 4 Tower

62 Apple-2 05/05/1955 LANL NNSS Area 1 Tower

328 Apshapa 06/06/1963 LLNL NNSS U9ai Shaft

637 Arabis-Blue 03/06/1970 LLNL NNSS U9ITS Z-26 Shaft

637 Arabis-Green 03/06/1970 LLNL NNSS U9ITS X-28 Shaft

637 Arabis-Red  03/06/1970 LLNL NNSS U9ITS V-26 Shaft

155 Argus I 08/27/1958 LANL/DoD South Atlantic - - - - Rocket

156 Argus II 08/30/1958 LANL/DoD South Atlantic - - - - Rocket

157 Argus III 09/06/1958 LANL/DoD South Atlantic - - - - Rocket

236 Arikaree  05/10/1962 LLNL NNSS U9r Shaft

230 Arkansas 05/02/1962 LLNL Christmas Island area - - - - Airdrop

922 Armada  04/22/1983 LLNL/UK NNSS U9cs Shaft

209 Armadillo  02/09/1962 LANL NNSS U3ar Shaft

655 Arnica-Violet  06/26/1970 LLNL NNSS U2dd #3 Shaft

655 Arnica-Yellow  06/26/1970 LLNL NNSS U2dd #2 Shaft

712 Arsenate 11/09/1972 LLNL NNSS U9ci Shaft

663 Artesia  12/16/1970 LANL NNSS U7x Shaft

835 Asco 04/25/1978 LLNL NNSS U10bc Shaft

805 Asiago  12/21/1976 LLNL NNSS U2ar Shaft

135 Aspen 06/14/1958 LLNL Bikini Atoll - - - - Barge

707 Atarque  07/25/1972 LANL NNSS U3ht Shaft

909 Atrisco  08/05/1982 LANL NNSS U7bp Shaft

573 Auger 11/15/1968 LANL NNSS U3fx Shaft

384 Auk 10/02/1964 LANL NNSS U7b Shaft

1035 Austin 06/21/1990 LANL NNSS U6e Shaft

664 Avens-Alkermes 12/16/1970 LLNL NNSS U9ITS U-24 Shaft

664 Avens-Andorre  12/16/1970 LLNL NNSS U9ITS T-28 Shaft

6634 Avens-Asmalte  12/16/1970 LLNL NNSS U9ITS W-21 Shaft

664 Avens-Cream  12/16/1970 LLNL NNSS U9ITS X-29 Shaft

228 Aztec 04/27/1962 LANL Christmas Island area - - - - Airdrop

864 Azul 12/14/1979 LLNL NNSS U2em Shaft

849 Baccarat  01/24/1979 LANL NNSS U7ax Shaft

834 Backbeach 04/11/1978 LANL NNSS U19x Shaft

863 Backgammon  11/29/1979 LANL NNSS U3jh Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
121

14:40:00.15 37.117305 -116.039815 4,213 -536 Weapons Related Less than 20 kt 366

12:35:00.00 37.138372 -116.118258 4,491 300 Weapons Related 23 kt 38

15:20:00.00 37.084950 -116.021125 4,193 1,118 Weapons Related 3.5 kt 17

21:35:00.00 11.589200 165.518200 0 -90 Weapons Effects 21 kt 3

13:52:00.00 36.805100 -115.950200 3,140 1,080 Weapons Related 8 kt 8

17:30:00.00 37.084120 -116.020306 4,193 1,109 Weapons Effects 1 kt 24

13:49:00.00 36.805100 -115.950200 3,140 1,100 Weapons Related 8 kt 10

14:31:00.16 37.138482 -116.041768 4,222 -1,351 Weapons Related Less than 20 kt 678

18:00:00.08 37.039493 -116.022015 4,008 -792 Weapons Related 12.5 kt 287

15:30:00.20 37.173082 -116.099735 4,574 -912 Weapons Related 10 kt 666

14:30:00.17 37.124960 -116.082867 4,273 -1,761 Joint US-UK 20 to 150 kt 800

15:59:30.04 37.039550 -116.016800 4,007 -849 Weapons Related Less than 20 kt 386

15:00:00.09 37.231040 -116.410277 6,573 -1,971 Joint US-UK 20 to 150 kt 1030

16:38:30.13 37.043839 -116.013076 4,031 -864 Weapons Related Low 347

13:30:00.04 37.026025 -116.020422 3,984 -888 Weapons Related Less than 20 kt 676

18:12:00.04 37.021962 -116.031076 3,982 -998 Weapons Related Less than 20 kt 592

20:25:00.09 37.087042 -116.045619 4,129 -1,850 Weapons Related 20 to 150 kt 882

15:00:00.04 37.046988 -116.031070 4,023 -427 Safety Experiment Less than 20 kt 578

13:05:00.00 37.094780 -116.024575 4,245 500 Weapons Related 8 kt 55

14:13:00.04 37.059170 -116.029052 4,054 -1,280 Weapons Related Less than 20 kt 643

17:00:00.07 37.054972 -116.039711 4,045 -1,381 Weapons Related 20 to 200 kt 631

16:00:00.08 37.092463 -116.094092 4,241 -680 Weapons Related Less than 20 kt 943

19:25:00.09 37.220157 -116.462524 6,227 -1,985 Weapons Related 20 to 150 kt 987

16:30:00.04 37.231424 -116.474461 6,281 -4,600 Weapons Related 1.15 Mt 581

15:30:00.08 37.010944 -116.025345 3,969 -936 Weapons Related Less than 20 kt 737

19:30:00.00 37.049512 -116.034010 4,028 -456 Safety Experiment 15 tons 159

15:02:00.04 37.052264 -116.021742 4,043 -790 Weapons Related Less than 20 kt 540

19:00:00.00 37.296027 -116.313786 7,037 -2,065 Weapons Related 20 to 150 kt 1042

15:17:00.12 37.133257 -116.041124 4,212 -795 Weapons Related Less than 20 kt 586

15:19:00.00 1.230000 -157.220000 0 11,810 Weapons Related 7.65 Mt 259

17:00:00.13 37.060371 -116.022530 4,074 -2,344 Weapons Related 249 kt 336

20:10:00.22 37.002155 -116.025429 3,957 -1,044 Weapons Related Less than 20 kt 767

20:30:00.08 37.075322 -116.044686 4,100 -2,088 Weapons Related 20 to 150 kt 799

18:30:00.04 37.046984 -116.030333 4,022 -487 Safety Experiment Less than 20 kt 569

18:30:00.04 37.046984 -116.030333 4,022 -387 Safety Experiment Less than 20 kt 569

14:01:00.10 37.038898 -116.013121 4,039 -632 Weapons Related Less than 20 kt 369

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

120

366 Backswing  05/14/1964 LLNL NNSS U9aw Shaft

38 Badger 04/18/1953 LANL NNSS Area 2 Tower

17 Baker 

(Operation Buster) 10/28/1951 LANL NNSS Area 7 Airdrop

3

Baker 

(Operation Crossroads) 07/251946 LANL/DoD Bikini Atoll - - - - Underwater

8

Baker 

(Operation Ranger) 01/28/1951 LANL NNSS Area 5 Airdrop

24 Baker 

(Operation Tumbler-Snapper) 04/15/1952 LANL/DoD NNSS Area 7 Airdrop

10 Baker-2 02/02/1951 LANL NNSS Area 5 Airdrop

678 Baltic 08/06/1971 LLNL NNSS U9ITS S-25 Shaft

287 Bandicoot  10/19/1962 LANL NNSS U3bj Shaft

666 Baneberry  12/18/1970 LLNL NNSS U8d Shaft

800 Banon  08/26/1976 LLNL/UK NNSS U2dz Shaft

386 Barbel 10/16/1964 LANL NNSS U3bx Shaft

1030 Barnwell 12/08/1989 LLNL/UK NNSS U20az Shaft

347 Barracuda 12/04/1963 LANL NNSS U3cr Shaft

676 Barranca 08/04/1971 LANL NNSS U3he Shaft

592 Barsac  03/20/1969 LANL NNSS U3gc Shaft

882 Baseball  01/15/1981 LANL NNSS U7ba Shaft

578 Bay Leaf 12/12/1968 LANL NNSS U3gq Shaft

55 Bee 03/22/1955 LANL NNSS Area 7 Tower

643 Beebalm 05/01/1970 LANL NNSS U3fn Shaft

631 Belen  02/04/1970 LANL NNSS U3br Shaft

943 Bellow  05/16/1984 LLNL NNSS U4ac Shaft

987 Belmont 10/16/1986 LLNL NNSS U20as Shaft

581 Benham 12/19/1968 LLNL NNSS U20c Shaft

737 Bernal  11/28/1973 LANL NNSS U3jy Shaft

159 Bernalillo 09/17/1958 LANL NNSS U3n Shaft

540 Bevel 04/04/1968 LANL NNSS U3fu Shaft

1042 Bexar 04/04/1991 LANL NNSS U19ba Shaft

586 Biggin 01/30/1969 LLNL NNSS U9bz Shaft

259 Bighorn 06/27/1962 LLNL Christmas Island area - - - - Airdrop

336 Bilby  09/13/1963 LANL NNSS U3cn Shaft

767 Bilge 02/19/1975 LANL NNSS U3kc Shaft

799 Billet 07/27/1976 LANL NNSS U7an Shaft

569 Bit-A 10/31/1968 LANL NNSS U3gt Shaft

569 Bit-B 10/31/1968 LANL NNSS U3gt Shaft

369 Bitterling  06/12/1964 LANL NNSS U3cu Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
123

18:00:00.16 37.118411 -116.038640 4,217 -714 Weapons Related Low 229

18:26:00.00 11.547200 162.352050 10 200 Weapons Related 8 kt 76

15:00:00.15 37.185883 -116.202885 7,126 -987 Weapons Related 22 kt 193

17:00:00.04 37.081476 -116.014810 4,205 -1,830 Weapons Related 20 to 200 kt 595

09:59:00.00 16.468422 -169.630075 0 tens of miles Weapons Effects Submegaton 289

15:21:00.00 1.380000 -157.195000 0 4,980 Weapons Related 1.27 Mt 262

17:00:00.13 37.046097 -116.024707 4,021 -676 Weapons Related Low 275

14:15:00.08 37.007554 -116.017572 3,961 -1,251 Weapons Related Less than 20 kt 822

17:50:05.09 37.262907 -116.412571 6,621 -2,083 Weapons Related 20 to 150 kt 989

15:29:52.28 37.119437 -116.034762 4,238 -391 Weapons Related Less than 20 kt 362

11:55:00.00 37.094825 -116.024500 4,235 500 Weapons Related 12 kt 87

14:45:00.09 37.056117 -116.048955 4,057 -1,250 Weapons Related 20 to 150 kt 876

15:37:19.12 37.059338 -116.034192 4,050 -987 Weapons Related Less than 20 kt 355

21:30:00.12 37.048294 -116.035380 4,028 -330 Weapons Related Low 197

16:00:00.09 37.141850 -116.079570 4,335 -1,780 Weapons Related 20 to 150 kt 1002

20:12:30.04 37.012107 -116.037327 3,970 -1,089 Weapons Related Less than 20 kt 511

13:30:00.10 37.091256 -116.045756 4,137 -1,848 Weapons Related Less than 150 kt 915

17:40:04.41 37.099826 -116.004708 4,374 -1,836 Weapons Related 20 to 200 kt 486

18:17:00.11 37.069013 -116.046331 4,083 -1,850 Weapons Related 20 to 150 kt 905

17:00:00.04 37.067623 -115.992991 4,257 -700 Weapons Related Less than 20 kt 1033

16:00:00.13 37.162437 -116.079494 4,407 -650 Weapons Related Less than 20 kt 602

16:00:00.13 37.160733 -116.080021 4,402 -750 Weapons Related Less than 20 kt 602

15:00:00.07 37.295373 -116.456591 6,370 -3,825 Weapons Related 1.3 Mt 544

14:00:00.16 37.164403 -116.033602 4,342 -1,000 Weapons Related Less than 20 kt 674

16:25:00.08 37.121309 -116.056452 4,209 -960 Weapons Related Less than 20 kt 932

16:25:00.08 37.121309 -116.056452 4,209 -1,400 Weapons Related Less than 20 kt 932

18:45:00.00 11.697130 165.274200 10 7 Weapons Related 15 Mt 44

18:00:00.21 37.122117 -116.049750 4,201 -840 Weapons Related 8.4 kt 218

14:00:00.00 37.086639 -116.072046 4,149 -1,585 Weapons Related 20 to 150 kt 951

15:20:00.08 37.193506 -116.035883 4,413 -666 Weapons Related Less than 20 kt 996

18:35:00.07 37.096440 -116.070481 4,177 -1,500 Joint US-UK Less than 20 kt 1048

17:00:00.04 37.097785 -116.033872 4,213 -1,742 Weapons Related 20 to 200 kt 423

15:00:00.04 37.042747 -116.014798 4,021 -388 Weapons Related Less than 20 kt 529

19:15:00.04 37.072497 -116.029969 4,102 -1,642 Weapons Related 20 to 200 kt 435

17:04:00.11 37.007336 -116.370794 5,210 -165 Plowshare 1.08 kt 536

17:04:00.11 37.007471 -116.371259 5,210 -165 Plowshare 1.08 kt 536

17:04:00.11 37.007617 -116.371740 5,210 -165 Plowshare 1.08 kt 536

17:04:00.11 37.007772 -116.372234 5,210 -165 Plowshare 1.08 kt 536

17:04:00.11 37.007913 -116.372713 5,210 -165 Plowshare 1.08 kt 536

15:00:00.08 37.094739 -116.028751 4,219 -1,950 Weapons Related 20 to 150 kt 811

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

122

229 Black  04/27/1962 LLNL NNSS U9p Shaft

76 Blackfoot 06/12/1956 LANL Enewetak Atoll - - - - Tower

193 Blanca 10/30/1958 LLNL NNSS U12e.05 Tunnel

595 Blenton  04/30/1969 LANL NNSS U7p Shaft

289 Bluegill 3 Prime 10/26/1962 LANL/DoD Johnston Island area - - - - Rocket

262 Bluestone 06/30/1962 LLNL Christmas Island area - - - - Airdrop

275 Bobac  08/24/1962 LANL NNSS U3bl Shaft

822 Bobstay  10/26/1977 LANL NNSS U3jb Shaft

989 Bodie 12/13/1986 LLNL NNSS U20ap Shaft

362 Bogey 04/17/1964 LLNL NNSS U9au Shaft

87 Boltzmann 05/28/1957 LANL NNSS Area 7 Tower

876 Bonarda  09/25/1980 LANL NNSS U3gv Shaft

355 Bonefish  02/18/1964 LANL NNSS U3bt Shaft

197 Boomer  10/01/1961 LANL NNSS U3aa Shaft

1002 Borate  10/23/1987 LLNL NNSS U2ge Shaft

511 Bordeaux  08/18/1967 LANL NNSS U3dr Shaft

915 Borrego 09/29/1982 LANL NNSS U7br Shaft

486 Bourbon  01/20/1967 LANL NNSS U7nS Shaft

905 Bouschet  05/07/1982 LANL NNSS U3la Shaft

1033 Bowie 04/06/1990 LANL NNSS U3mk Shaft

602 Bowl-1  06/26/1969 LLNL NNSS U2bo #1 Shaft

602 Bowl-2  06/26/1969 LLNL NNSS U2bo #2 Shaft

544 Boxcar 04/26/1968 LLNL NNSS U20i Shaft

674 Bracken 07/09/1971 LLNL NNSS U10aq Shaft

932 Branco  09/21/1983 LLNL NNSS U2ew Shaft

932 Branco-Herkimer  09/21/1983 LLNL NNSS U2ew Shaft

44 Bravo 02/28/1954 LANL Bikini Atoll - - - - Surface

218 Brazos  03/08/1962 LLNL NNSS U9d Shaft

951 Breton  09/13/1984 LLNL NNSS U4ar Shaft

996 Brie  06/18/1987 LLNL NNSS U10cc Shaft

1048 Bristol 11/26/1991 LLNL/UK NNSS U4av Shaft

423 Bronze  07/23/1965 LANL NNSS U7f Shaft

529 Brush 01/24/1968 LANL NNSS U3eq Shaft

435 Buff  12/16/1965 LANL NNSS U3dh Shaft

536 Buggy-A 03/12/1968 LLNL NNSS U30a Crater

536 Buggy-B 03/12/1968 LLNL NNSS U30b Crater

536 Buggy-C 03/12/1968 LLNL NNSS U30c Crater

536 Buggy-D 03/12/1968 LLNL NNSS U30d Crater

536 Buggy-E 03/12/1968 LLNL NNSS U30e Crater

811 Bulkhead 04/27/1977 LANL NNSS U7am Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
125

18:00:00.09 37.085884 -116.069388 4,145 -1,605 Weapons Related Less than 150 kt 1015

16:00:00.09 37.261551 -116.421002 6,486 -2,211 Weapons Related 20 to 150 kt 1034

16:03:00.00 14.670000 -168.250000 0 9,900 Weapons Related 11.3 kt 282

15:30:00.15 37.131968 -116.033210 4,254 -743 Weapons Related Less than 20 kt 354

15:07:30.16 37.083902 -116.070757 4,142 -1,475 Weapons Related 20 to 150 kt 857

18:15:00.10 37.242607 -116.431741 6,520 -2,282 Weapons Related Less than 20 kt 413

18:15:00.00 11.542700 162.338600 0 10 Weapons Related 81 kt 123

13:15:00.15 37.182162 -116.046217 4,335 -1,282 Weapons Related 20 to 200 kt 373

21:05:00.09 37.114478 -116.123752 4,510 -1,099 Weapons Related Less than 20 kt 898

20:20:00.09 37.300630 -116.460926 6,345 -1,781 Weapons Related 20 to 150 kt 920

13:30:00.04 37.078000 -116.031637 4,118 -649 Weapons Related Less than 20 kt 727

15:00:00.17 37.133964 -116.085117 4,313 -1,970 Weapons Related 20 to 200 kt 769

16:00:00.11 37.280797 -116.515339 6,197 -170 Plowshare 2.3 kt 530

18:15:00.00 11.697130 165.274200 5 3 Weapons Related 18 kt 121

22:01:51.04 37.143270 -116.064717 4,298 -2,050 Weapons Related 110 kt 618

15:46:00.00 14.700000 -168.417000 0 11,780 Weapons Related 800 kt 291

14:57:52.15 36.823339 -115.967700 3,137 -967 Weapons Related 750 tons 414

12:30:00.16 37.278875 -116.369471 6,758 -4,304 Weapons Related 200 to 1000 kt 779

18:30:00.16 37.176732 -116.212366 7,600 -1,390 Weapons Effects Less than 20 kt 671

21:53:00.16 37.126070 -116.032608 4,253 -1,049 Weapons Related Less than 20 kt 828

18:46:30.09 37.055962 -116.019826 4,060 -1,150 Weapons Related Less than 20 kt 870

15:00:00.04 37.112323 -116.082967 4,243 -900 Weapons Related 20 to 200 kt 642

15:00:00.04 37.115532 -116.081005 4,249 -1,310 Weapons Related 20 to 200 kt 642

16:00:00.05 37.072475 -116.025859 4,116 -991 Weapons Related Less than 20 kt 662

18:00:00.16 37.139535 -116.033233 4,265 -700 Safety Experiment Less than 20 kt 713

18:00:00.16 37.139535 -116.033233 4,265 -600 Weapons Related Less than 20 kt 713

22:00:00.06 51.470200 179.103800 208 -5,873 Weapons Related Less than 5 Mt 685

22:17:00.06 37.065281 -116.016319 4,113 -1,469 Weapons Related Less than 20 kt 378

14:41:00.19 36.992556 -116.023017 3,946 -441 Weapons Related Less than 20 kt 703

13:04:00.10 37.103086 -116.048917 4,146 -1,968 Weapons Related 20 to 150 kt 944

19:47:08.63 37.154760 -116.080754 4,390 -536 Weapons Related Low 309

14:07:00.16 37.097534 -116.091825 4,238 -684 Weapons Related Less than 20 kt 814

14:20:00.13 37.037266 -116.016562 4,002 -1,081 Weapons Related Low 337

16:05:00.16 37.129083 -116.083868 4,302 -2,170 Weapons Related 220 kt 665

15:07:00.00 37.006083 -116.040798 3,970 -916 Weapons Related Less than 20 kt 661

15:30:00.11 37.130698 -116.062466 4,256 -762 Weapons Related Less than 20 kt 399

16:00:00.16 37.148826 -116.052745 4,247 -994 Weapons Related Low 303

20:00:00.07 37.039511 -116.024762 4,005 -493 Weapons Related Less than 20 kt 394

14:30:00.15 37.113742 -116.038198 4,226 -1,240 Weapons Related Less than 20 kt 683

15:00:00.00 37.042800 -116.027800 4,026 73 Safety Experiment 21 tons 182

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

124

1015 Bullfrog  08/30/1988 LLNL NNSS U4au Shaft

1034 Bullion 06/13/1990 LLNL NNSS U20bd Shaft

282 Bumping 10/06/1962 LLNL Johnston Island area - - - - Airdrop

354 Bunker  02/13/1964 LLNL NNSS U9bb Shaft

857 Burzet  08/03/1979 LLNL NNSS U4ai Shaft

413 Buteo 05/12/1965 LANL NNSS U20a Shaft

123 Butternut 05/11/1958 LANL Enewetak Atoll - - - - Barge

373 Bye  07/16/1964 LLNL NNSS U10i Shaft

898 Caboc  12/16/1981 LLNL NNSS U2cp Shaft

920 Cabra 03/26/1983 LLNL NNSS U20aj Shaft

727 Cabresto 05/24/1973 LANL NNSS U7h Shaft

769 Cabrillo  03/07/1975 LLNL NNSS U2dr Shaft

530 Cabriolet 01/26/1968 LLNL NNSS U20l Crater

121 Cactus 05/05/1958 LANL Enewetak Atoll - - - - Surface

618 Calabash  10/29/1969 LLNL NNSS U2av Shaft

291 Calamity 10/27/1962 LLNL Johnston Island area - - - - Airdrop

414 Cambric 05/14/1965 LLNL NNSS U5e Shaft

779 Camembert 06/26/1975 LLNL NNSS U19q Shaft

671 Camphor 06/29/1971 LLNL/SNL/DoD NNSS U12g.10 Tunnel

828 Campos 02/13/1978 LLNL NNSS U9cp Shaft

870 Canfield  05/02/1980 LANL NNSS U3kx Shaft

642 Can-Green  04/21/1970 LLNL NNSS U2dd #1 Shaft

642 Can-Red  04/21/1970 LLNL NNSS U2dd #4 Shaft

662 Canjilon 12/16/1970 LANL NNSS U3fq Shaft

713 Canna-Limoges 11/17/1972 LLNL NNSS U9ITS YZ-26 Shaft

713 Canna-Umbrinus 11/17/1972 LLNL NNSS U9ITS YZ-26 Shaft

685 Cannikin 11/06/1971 LLNL Amchitka, Alaska - - - - Shaft

378 Canvasback 08/22/1964 LANL NNSS U3cp Shaft

703 Capitan 06/28/1972 LANL NNSS U3jj Shaft

944 Caprock  05/31/1984 LANL NNSS U4q Shaft

309 Carmel  02/21/1963 LLNL NNSS U2h Shaft

814 Carnelian  07/28/1977 LLNL NNSS U4af Shaft

337 Carp 09/27/1963 LANL NNSS U3cb Shaft

665 Carpetbag  12/17/1970 LLNL NNSS U2dg Shaft

661 Carrizozo  12/03/1970 LANL NNSS U3hr Shaft

399 Cashmere  02/04/1965 LLNL NNSS U2ad Shaft

303 Casselman  02/08/1963 LLNL NNSS U10g Shaft

394 Cassowary 12/16/1964 LANL NNSS U3bn Shaft

683 Cathay 10/08/1971 LLNL NNSS U9ch Shaft

182 Catron 10/24/1958 LANL NNSS Area 3 Tower

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
127

13:31:10.04 37.007141 -116.019897 3,962 -941 Weapons Related Less than 20 kt 708

13:00:00.08 37.111034 -116.015246 4,405 -599 Weapons Related Less than 20 kt 966

17:30:00.00 11.697275 165.280000 0 11 Weapons Related 220 kt 143

13:51:13.11 37.137259 -116.070943 4,299 -564 Weapons Related Less than 20 kt 426

04:00:00.00 37.181329 -116.069535 4,428 25 Safety Experiment 0.7 tons 184

15:02:00.04 37.042727 -116.011200 4,031 -693 Weapons Related Less than 20 kt 478

15:00:00.09 37.008471 -116.024667 3,964 -699 Weapons Related Less than 20 kt 893

14:00:00.09 37.019686 -116.016537 3,975 -750 Weapons Related Less than 20 kt 911

21:09:59.16 37.123899 -116.090425 4,291 -1,086 Weapons Related 20 to 200 kt 688

16:01:00.00 14.670000 -168.750000 0 11,970 Weapons Related 1.59 Mt 286

16:25:00.09 37.002253 -116.043912 3,964 -1,088 Weapons Related Less than 20 kt 967

14:00:00.08 37.272710 -116.355916 6,692 -2,046 Weapons Related 143 kt 930

14:30:00.14 37.124433 -116.087848 4,288 -1,085 Weapons Related Less than 20 kt 682

17:12:00.03 37.077921 -116.017582 4,172 -1,494 Joint US-UK 20 to 200 kt 428

13:00:00.00 37.134742 -116.041648 4,215 1,500 Weapons Related 12 kt 114

15:00:00.00 37.084950 -116.021250 4,193 1,132 Weapons Related 14 kt 18

17:30:00.00 37.084400 -116.021143 4,193 3,447 Weapons Related 31 kt 25

15:00:00.08 37.347938 -116.322827 6,861 -2,188 Weapons Related 73 kt 457

12:22:00.08 37.245458 -116.483751 6,245 -1,992 Weapons Related 20 to 200 kt 554

14:40:00.43 37.162228 -116.076753 4,394 -639 Weapons Related Less than 20 kt 591

14:30:00.00 37.044600 -116.030650 4,025 52 Safety Experiment 0.6 tons 187

08:30:00.00 16.072381 -169.609986 0 tens of miles Weapons Effects Low 288

17:00:00.09 37.162769 -116.064219 4,332 -1,125 Weapons Related Less than 20 kt 919

18:00:00.13 37.194242 -116.207891 7,472 -838 Weapons Related Low 198

13:39:00.10 37.111374 -116.031359 4,276 -462 Weapons Related Less than 20 kt 410

17:51:00.00 11.723000 165.306000 0 4,350 Weapons Related 3.8 Mt 70

11:30:00.16 37.242582 -116.421101 6,477 -3,829 Weapons Related 200 to 500 kt 791

15:00:13.54 37.107580 -116.015958 4,384 -1,100 Weapons Related Less than 20 kt 855

15:36:00.00 1.565000 -157.365000 0 6,945 Weapons Related 73 kt 243

15:15:00.16 37.171658 -116.053542 4,281 -1,040 Weapons Related Less than 20 kt 803

20:00:00.16 37.127602 -116.062439 4,237 -2,350 Weapons Related 20 to 200 kt 786

16:30:00.13 37.049006 -116.030398 4,030 -492 Weapons Related 1.9 kt 211

18:00:00.13 37.046862 -116.037770 4,026 -448 Weapons Related Low 221

17:00:00.13 37.048966 -116.032619 4,028 -195 Safety Experiment Low 307

15:09:00.04 37.019257 -116.038296 3,979 -789 Weapons Related Less than 20 kt 497

18:00:00.16 37.128808 -116.049178 4,208 -1,000 Weapons Related 11.9 kt 213

18:41:00.04 37.034601 -116.031660 4,000 -393 Safety Experiment Less than 20 kt 444

18:00:00.12 37.010848 -116.033049 3,968 -1,160 Weapons Related Less than 20 kt 883

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

126

708 Cebolla 08/09/1972 LANL NNSS U3jc Shaft

966 Cebrero 08/14/1985 LLNL NNSS U9cw Shaft

143 Cedar 07/02/1958 LLNL Bikini Atoll - - - - Barge

426 Centaur  08/27/1965 LLNL NNSS U2ak Shaft

184 Ceres 10/26/1958 LLNL NNSS Area 8 Tower

478 Cerise  11/18/1966 LANL NNSS U3eu Shaft

893 Cernada 09/24/1981 LANL NNSS U3kk Shaft

911 Cerro 09/02/1982 LANL NNSS U3lf Shaft

688 Chaenactis  12/14/1971 LLNL NNSS U2dl Shaft

286 Chama 10/18/1962 LANL Johnston Island area - - - - Airdrop

967 Chamita  08/17/1985 LANL NNSS U3lz Shaft

930 Chancellor 09/01/1983 LANL NNSS U19ad Shaft

682 Chantilly  09/29/1971 LLNL NNSS U2di Shaft

428 Charcoal  09/10/1965 LANL/UK NNSS U7g Shaft

114 Charleston 09/28/1957 LLNL NNSS Area 9 Balloon

18 Charlie 

(Operation Buster) 10/30/1951 LANL NNSS Area 7 Airdrop

25 Charlie 

(Operation Tumbler-Snapper) 04/22/1952 LANL/DoD NNSS Area 7 Airdrop

457 Chartreuse 05/06/1966 LANL NNSS U19d Shaft

554 Chateaugay 06/28/1968 LLNL NNSS U20t Shaft

591 Chatty  03/18/1969 LLNL NNSS U2bn Shaft

187 Chaves (Chavez) 10/27/1958 LANL NNSS Area 3 Tower

288 Checkmate 10/20/1962 LANL/DoD Johnston Island area - - - - Rocket

919 Cheedam  02/17/1983 LLNL NNSS U2et Shaft

198 Chena 10/10/1961 LLNL NNSS U12b.09 Tunnel

410 Chenille  04/22/1965 LLNL NNSS U9bg Shaft

70 Cherokee 05/20/1956 LANL/DoD Bikini Atoll - - - - Airdrop

791 Cheshire 02/14/1976 LLNL NNSS U20n Shaft

855 Chess 06/20/1979 LANL NNSS U7at Shaft

243 Chetco 05/19/1962 LLNL Christmas Island area - - - - Airdrop

803 Chevre  11/23/1976 LLNL NNSS U10ay Shaft

786 Chiberta  12/20/1975 LLNL NNSS U2ek Shaft

211 Chinchilla  02/19/1962 LANL NNSS U3ag Shaft

221 Chinchilla II  03/31/1962 LANL NNSS U3as Shaft

307 Chipmunk 02/15/1963 LANL NNSS U3ay Shaft

497 Chocolate  04/21/1967 LANL NNSS U3es Shaft

213 Cimarron  02/23/1962 LLNL NNSS U9h Shaft

444 Cinnamon 03/07/1966 LANL NNSS U3dm Shaft

883 Clairette 02/05/1981 LANL NNSS U3kr Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
129

13:00:00.00 37.120001 -116.059701 4,218 -1,551 Weapons Related 20 to 200 kt 547

11:17:00.00 37.708495 -116.657860 5,380 1 Joint US-UK Zero 323

10:47:00.00 37.761125 -116.614428 5,390 1

Joint US-UK Zero 325

10:33:00.00 37.759156 -116.681135 5,387 1 Joint US-UK Zero 329

17:00:00.14 37.198125 -116.230391 7,414 -1,788 Weapons Related Intermediate 341

11:15:00.00 37.087549 -116.019208 4,025 1,334 Weapons Related 61 kt 43

16:00:00.15 37.136163 -116.071528 4,296 -592 Weapons Related Less than 20 kt 352

18:04:13.11 37.143627 -116.053391 4,242 -1,303 Weapons Related Less than 20 kt 445

16:00:00.10 37.056103 -116.046214 4,058 -899 Weapons Related Less than 20 kt 918

15:00:00.04 37.091760 -116.036669 4,164 -2,189 Weapons Related Less than 20 kt 522

17:50:00.16 37.127406 -116.037989 4,217 -696 Weapons Related Low 212

14:30:00.41 37.133171 -116.087531 4,323 -1,525 Weapons Related Less than 100 kt 593

14:30:00.14 37.049749 -116.040443 4,034 -789 Weapons Related Less than 20 kt 520

12:30:00.16 37.305939 -116.472375 6,337 -4,174 Weapons Related 500 to 1000 kt 794

16:15:00.00 37.048795 -116.035040 4,029 -350 Safety Experiment 5.5 tons 167

15:15:00.04 37.012101 -116.020835 3,968 -806 Weapons Related Less than 20 kt 723

17:00:00.08 37.248374 -116.423288 6,473 -2,077 Joint US-UK 20 to 150 kt 869

15:00:00.20 37.130361 -116.064819 4,258 -2,445 Weapons Related 250 kt 500

13:00:00.09 37.260082 -116.441965 6,521 -2,035 Weapons Related Less than 150 kt 1009

17:07:30.07 37.029621 -116.025000 3,991 -812 Weapons Related Less than 20 kt 847

21:15:00.08 37.282822 -116.413194 6,585 -1,785 Weapons Related 20 to 150 kt 1025

15:07:00.04 37.001952 -116.038777 3,961 -791 Weapons Related Less than 20 kt 661

15:13:02.10 37.164690 -116.053221 4,273 -2,227 Weapons Related 20 to 200 kt 433

17:18:30.03 37.017564 -116.030428 3,975 -891 Joint US-UK Less than 20 kt 374

13:30:00.17 37.161873 -116.039722 4,306 -1,455 Weapons Related 20 to 200 kt 648

13:30:00.17 37.165879 -116.036360 4,329 -1,280 Weapons Related 20 to 200 kt 648

15:05:00.09 37.142700 -116.071988 4,312 -1,248 Weapons Related Less than 20 kt 983

15:00:00.09 37.016758 -116.008512 3,967 -1,096 Weapons Related Less than 20 kt 948

21:02:45.08 37.104317 -116.074901 4,204 -1,093 Weapons Related Less than 20 kt 1041

21:02:45.08 37.104317 -116.074901 4,204 -1,450 Weapons Related Less than 20 kt 1041

21:02:45.08 37.104317 -116.074901 4,204 -1,559 Safety Experiment Less than 20 kt 1041

18:30:00.08 37.179926 -116.089828 4,556 -1,690 Weapons Related 20 to 150 kt 958

17:30:00.00 37.041200 -116.026880 4,000 0 Safety Experiment Zero 92

20:05:00.00 37.042900 -116.027100 4,035 3 Safety Experiment 300 tons 108

20:00:00.00 37.048200 -116.025200 4,050 0 Safety Experiment 500 tons 117

14:00:00.16 37.151117 -116.068429 4,327 -1,740 Weapons Related 20 to 150 kt 821

17:02:00.03 37.072423 -116.016258 4,148 -1,178 Joint US-UK Zero 383

17:53:00.16 37.006589 -116.032235 3,963 -1,098 Weapons Related Less than 20 kt 808

21:45:00.04 37.001028 -116.020291 3,955 -990 Weapons Related Less than 20 kt 692

16:01:30.12 37.048763 -116.031182 4,028 -245 Safety Experiment Low 314

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

128

547 Clarksmobile  05/17/1968 LLNL NNSS U2as Shaft

323 Clean Slate I 05/25/1963 LANL/DoD/UK NTTR - - - - Surface

325 Clean Slate II 05/31/1963 LANL/DoD/UK NTTR - - - - Surface

329 Clean Slate III 06/09/1963 LANL/DoD/UK NTTR - - - - Surface

341 Clearwater 10/16/1963 LLNL NNSS U12q Shaft

43 Climax 06/04/1953 LANL NNSS Area 7 Airdrop

352 Club  01/30/1964 LLNL NNSS U2aa Shaft

445 Clymer  03/12/1966 LLNL NNSS U9ce Shaft

918 Coalora  02/11/1983 LANL NNSS U3lo Shaft

522 Cobbler 11/08/1967 LANL NNSS U7u Shaft

212 Codsaw  02/19/1962 LLNL NNSS U9g Shaft

593 Coffer  03/21/1969 LLNL NNSS U2de Shaft

520 Cognac 10/25/1967 LANL NNSS U3fm Shaft

794 Colby 03/14/1976 LLNL NNSS U20aa Shaft

167 Colfax 10/05/1958 LANL NNSS U3k Shaft

723 Colmor  04/26/1973 LANL NNSS U3hv Shaft

869 Colwick 04/26/1980 LLNL/UK NNSS U20ac Shaft

500 Commodore  05/20/1967 LLNL NNSS U2am Shaft

1009 Comstock 06/02/1988 LLNL NNSS U20ay Shaft

847 Concentration  12/01/1978 LANL NNSS U3kn Shaft

1025 Contact 06/22/1989 LLNL NNSS U20aw Shaft

661 Corazon 12/03/1970 LANL NNSS U3ha Shaft

433 Corduroy  12/03/1965 LLNL NNSS U10k Shaft

374 Cormorant 07/17/1964 LANL/UK NNSS U3df Shaft

648 Cornice-Green  05/15/1970 LLNL NNSS U10ap #3 Shaft

648 Cornice-Yellow  05/15/1970 LLNL NNSS U10ap #1 Shaft

983 Cornucopia  07/24/1986 LLNL NNSS U2gaS Shaft

948 Correo  08/02/1984 LANL NNSS U3lw Shaft

1041 Coso-Bronze  03/08/1991 LLNL NNSS U4an Shaft

1041 Coso-Gray  03/08/1991 LLNL NNSS U4an Shaft

1041 Coso-Silver  03/08/1991 LLNL NNSS U4an Shaft

958 Cottage  03/23/1985 LLNL NNSS U8j Shaft

92 Coulomb-A 07/01/1957 LANL NNSS Area 3 Surface

108 Coulomb-B 09/06/1957 LANL NNSS S3g Surface

117 Coulomb-C 12/09/1957 LANL NNSS S3i Surface

821 Coulommiers  09/27/1977 LLNL NNSS U2ei Shaft

383 Courser 09/25/1964 LANL/UK NNSS U3do Shaft

808 Cove  02/16/1977 LANL NNSS U3ki Shaft

692 Cowles  02/03/1972 LANL NNSS U3hx Shaft

314 Coypu 04/10/1963 LANL NNSS U3af Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
131

16:30:00.17 37.170963 -116.088036 4,488 -688 Weapons Related Less than 20 kt 842

16:30:00.17 37.170963 -116.088036 4,488 -1,377 Weapons Related Less than 20 kt 842

21:15:00.10 37.114376 -116.054313 4,195 -1,326 Weapons Related 20 to 200 kt 391

14:00:01.20 37.119205 -116.086002 4,269 -1,226 Weapons Related Less than 20 kt 754

14:00:01.20 37.119205 -116.086002 4,269 -891 Weapons Related Less than 20 kt 754

15:15:00.09 37.130426 -116.087381 4,312 -1,977 Weapons Related 20 to 200 kt 571

15:16:00.09 37.130426 -116.087381 4,312 -1,177 Weapons Related Less than 20 kt 572

15:16:00.09 37.130426 -116.087381 4,312 -1,177 Weapons Related Less than 20 kt 572

17:00:00.08 37.094280 -116.045731 4,148 -1,851 Weapons Related 20 to 150 kt 812

14:10:00.00 37.157276 -116.035786 4,317 -596 Weapons Related Less than 20 kt 546

15:20:00.08 37.145593 -116.090089 4,383 -1,280 Weapons Related Less than 20 kt 923

19:30:00.04 37.121466 -116.128621 4,589 -865 Weapons Related 11 kt 616

13:31:10.04 37.003705 -116.019923 3,957 -652 Weapons Related Less than 20 kt 708

15:00:00.04 37.014671 -116.003735 3,964 -440 Weapons Related Less than 20 kt 623

15:00:00.04 37.014865 -116.002020 3,967 -490 Weapons Related Less than 20 kt 623

14:28:38.04 37.036627 -116.000460 4,045 -1,340 Weapons Related 20 to 200 kt 634

16:03:00.16 37.156630 -116.071834 4,352 -745 Weapons Related Low 315

15:34:08.16 37.147554 -116.043762 4,245 -1,775 Weapons Related 20 to 200 kt 406

14:24:00.94 37.173070 -116.092626 4,527 -964 Weapons Related 8.7 kt 636

21:00:00.06 37.278620 -116.356493 6,707 -2,057 Weapons Related 119 kt 982

14:00:00.04 37.050572 -116.038720 4,036 -1,001 Weapons Related 12 kt 456

16:18:20.88 37.169003 -116.211623 7,519 -1,350 Weapons Effects Less than 20 kt 589

18:00:00.04 37.103299 -116.036570 4,223 -1,841 Weapons Related Less than 20 kt 473

18:06:00.00 11.679000 165.391500 0 10 Weapons Related 1.1 Mt 80

14:00:00.08 37.088950 -116.050132 4,120 -2,099 Weapons Related Less than 150 kt 1016

17:00:00.13 37.043017 -116.031123 4,016 -854 Weapons Related Low 257

17:10:00.09 37.157569 -116.090101 4,441 -1,050 Weapons Related Less than 20 kt 926

18:15:00.12 37.111003 -116.365835 5,384 -110 Weapons Effects 430 tons 216

20:27:45.09 37.264530 -116.500200 6,155 -1,801 Joint US-UK 20 to 150 kt 981

16:50:00.08 37.111444 -116.019526 4,372 -1,050 Weapons Related Less than 20 kt 880

16:00:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 2.2 kt 186

18:40:00.16 37.118958 -116.032393 4,261 -635 Weapons Related Low 226

15:30:00.11 37.020263 -116.021499 3,958 -1,070 Weapons Related Less than 20 kt 783

13:40:00.00 37.247830 -116.510033 6,240 -1,785 Weapons Related 20 to 150 kt 993

14:30:00.16 37.121323 -116.086603 4,276 -970 Weapons Related 15 kt 710

15:30:00.05 36.875842 -115.951559 3,395 -837 Weapons Effects 7.8 kt 472

21:00:00.12 37.222177 -116.163010 6,312 -660 Weapons Related 2.9 kt 253

14:00:00.04 37.013167 -116.017284 3,968 -394 Safety Experiment Less than 20 kt 668

11:30:00.00 37.150200 -116.109485 4,469 500 Weapons Related 17 kt 94

15:15:00.16 37.208750 -116.211642 7,346 -1,273 Weapons Effects Less than 20 kt 841

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

130

842 Cremino 09/27/1978 LLNL NNSS U8e Shaft

842 Cremino-Caerphilly 09/27/1978 LLNL NNSS U8e Shaft

391 Crepe  12/05/1964 LLNL NNSS U2q Shaft

754 Crestlake-Briar  07/18/1974 LLNL NNSS U2dw Shaft

754 Crestlake-Tansan  07/18/1974 LLNL NNSS U2dw Shaft

571 Crew  11/04/1968 LLNL NNSS U2db Shaft

572 Crew-2nd  11/04/1968 LLNL NNSS U2db Shaft

572 Crew-3rd  11/04/1968 LLNL NNSS U2db Shaft

812 Crewline 05/25/1977 LANL NNSS U7ap Shaft

546 Crock  05/08/1968 LLNL NNSS U10ak Shaft

923 Crowdie  05/05/1983 LLNL NNSS U2fe Shaft

616 Cruet  10/29/1969 LLNL NNSS U2cn Shaft

708 Cuchillo 08/09/1972 LANL NNSS U3jt Shaft

623 Culantro-A 12/10/1969 LANL NNSS U3hi-a Shaft

623 Culantro-B 12/10/1969 LANL NNSS U3hi-b Shaft

634 Cumarin  02/25/1970 LANL NNSS U3gz Shaft

315 Cumberland  04/11/1963 LLNL NNSS U2e Shaft

406 Cup  03/26/1965 LLNL NNSS U9cb Shaft

636 Cyathus  03/06/1970 LLNL NNSS U8b Shaft

982 Cybar 07/17/1986 LANL NNSS U19ar Shaft

456 Cyclamen  05/05/1966 LANL NNSS U3cx Shaft

589 Cypress 02/12/1969 LLNL/SNL/DoD NNSS U12g.09 Tunnel

473 Daiquiri 09/23/1966 LANL NNSS U7o Shaft

80 Dakota 06/25/1956 LANL Bikini Atoll - - - - Barge

1016 Dalhart  10/13/1988 LANL NNSS U4u Shaft

257 Daman I  06/21/1962 LANL NNSS U3be Shaft

926 Danablu  06/09/1983 LLNL NNSS U2eu Shaft

216 Danny Boy 03/05/1962 LLNL/DoD NNSS U18a Crater

981 Darwin 06/25/1986 LLNL/UK NNSS U20aq Shaft

880 Dauphin  11/14/1980 LLNL NNSS U9cq Shaft

186 De Baca 10/26/1958 LANL NNSS Area 7 Balloon

226 Dead  04/21/1962 LLNL NNSS U9k Shaft

783 Deck  11/18/1975 LANL NNSS U3kd Shaft

993 Delamar 04/18/1987 LLNL NNSS U20at Shaft

710 Delphinium  09/26/1972 LLNL NNSS U2dp Shaft

472 Derringer 09/12/1966 LANL/SNL/DoD NNSS U5i Shaft

253 Des Moines 06/13/1962 LLNL NNSS U12j.01 Tunnel

668 Dexter 06/23/1971 LANL NNSS U3hs Shaft

94 Diablo 07/15/1957 LLNL NNSS Area 2 Tower

841 Diablo Hawk 09/13/1978 LLNL/DoD NNSS U12n.10a Tunnel

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
133

20:15:00.17 36.879181 -115.935571 3,405 -868 Weapons Effects Less than 20 kt 686

16:00:00.09 37.211995 -116.207512 7,412 -1,390 Weapons Effects Less than 20 kt 912

23:20:00.09 37.209621 -116.210960 7,403 -1,326 Weapons Effects Less than 20 kt 970

14:00:00.04 37.010400 -116.2027643 6,321 -830 Vela Uniform Less than 20 kt 647

16:30:00.00 37.234140 -116.158224 6,307 -774 Weapons Effects Less than 20 kt 1050

14:00:00.04 37.011491 -116.204268 6,310 -873 Vela Uniform Less than 20 kt 672

17:16:00.16 37.214484 -116.184243 7,020 -1,391 Weapons Effects Less than 20 kt 706

19:15:00.04 37.201239 -116.206094 7,401 -1,319 Weapons Effects Less than 20 kt 633

16:30:00.04 36.877167 -115.931938 3,385 -794 Weapons Effects Less than 20 kt 559

19:02:00.16 37.165655 -116.057109 4,285 -1,000 Weapons Related Less than 20 kt 693

17:00:00.17 37.184978 -116.215970 7,461 -1,284 Weapons Effects Less than 20 kt 729

17:00:00.04 37.179930 -116.211733 7,540 -1,375 Weapons Effects Less than 20 kt 622

16:30:00.15 36.818004 -115.956925 3,095 -632 Weapons Effects Less than 20 kt 419

19:45:00.19 37.187868 -116.214751 7,430 -1,257 Weapons Effects Less than 20 kt 770

20:00:00.04 37.178340 -116.098631 4,615 -1,106 Weapons Effects 22 kt 461

15:00:00.10 37.235839 -116.163771 6,377 -857 Weapons Effects Less than 20 kt 1027

16:30:00.07 37.235678 -116.167307 6,392 -865 Weapons Effects Less than 20 kt 1046

15:04:00.00 37.020632 -115.988778 4,051 -1,115 Weapons Related Less than 20 kt 1054

15:30:00.00 37.084604 -116.020654 4,025 6,022 Weapons Related 11 kt 36

14:24:00.16 37.176147 -116.053825 4,296 -600 Weapons Related Less than 20 kt 809

14:24:00.16 37.176147 -116.053825 4,296 -926 Weapons Related Less than 20 kt 809

18:34:00.00 11.551866 162.347893 10 300 Weapons Related 81 kt 12

15:30:00.00 37.084550 -116.020850 4,193 1,417 Weapons Related 21 kt 19

16:30:00.00 37.084120 -116.021140 4,193 1,040 Weapons Related 19 kt 26

18:30:00.00 11.677570 162.206157 0 12 Weapons Related 397 kt 144

14:45:00.10 37.089748 -116.000235 4,324 -1,198 Weapons Related Less than 20 kt 950

14:20:00.00 37.086540 -116.024805 4,186 450 Weapons Related 37 tons 174

16:30:00.04 37.177511 -116.209811 7,619 -1,463 Weapons Effects Less than 20 kt 513

12:00:00.00 37.086540 -116.024805 4,230 1,500 Weapons Related 11 kt 102

18:00:00.13 37.046799 -116.040351 4,026 -1,191 Weapons Related Low 207

18:00:00.13 37.044458 -116.024402 4,016 -856 Weapons Related 10.6 kt 222

17:08:30.04 37.184571 -116.212312 7,505 -1,345 Weapons Effects Less than 20 kt 534

17:00:00.04 37.009611 -116.203797 6,499 -1,075 Weapons Effects Less than 20 kt 465

09:55:00.00 37.706091 -116.988191 4,972 1 Joint US-UK Zero 319

18:28:00.04 37.031770 -116.016605 3,991 -1,093 Weapons Related Less than 20 kt 439

17:00:00.07 37.073820 -116.020703 4,139 -1,449 Weapons Related 20 to 150 kt 843

21:15:00.16 37.134236 -116.070624 4,286 -725 Weapons Related Less than 20 kt 392

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

132

686 Diagonal Line 11/24/1971 LLNL/DoD NNSS U11g Shaft

912 Diamond Ace 09/23/1982 LLNL/DoD NNSS U12n.15 Tunnel

970 Diamond Beech 10/09/1985 LLNL/DoD NNSS U12n.19 Tunnel

647 Diamond Dust 05/12/1970 LANL/DoD NNSS U16a.05 Tunnel

1050 Diamond Fortune 04/30/1992 LANL/DoD NNSS U12p.05 Tunnel

672 Diamond Mine 07/01/1971 LANL/DoD NNSS U16a.06 Tunnel

706 Diamond Sculls 07/20/1972 LLNL/DoD NNSS U12t.02 Tunnel

633 Diana Mist 02/11/1970 LANL/DoD NNSS U12n.06 Tunnel

559 Diana Moon 08/27/1968 LLNL/DoD NNSS U11e Shaft

693 Dianthus  02/17/1972 LLNL NNSS U10at Shaft

729 Dido Queen 06/05/1973 LLNL/DoD NNSS U12e.14 Tunnel

622 Diesel Train 12/05/1969 LANL/DoD NNSS U12e.11 Tunnel

419 Diluted Waters  06/16/1965 LLNL/DoD NNSS U5b Shaft

770 Dining Car 04/05/1975 LLNL/DoD NNSS U12e.18 Tunnel

461 Discus Thrower  05/27/1966 LANL/DoD NNSS U8a Shaft

1027 Disko Elm 09/14/1989 LLNL/DoD NNSS U12p.03 Tunnel

1046 Distant Zenith 09/19/1991 LANL/DoD NNSS U12p.04 Tunnel

1054 Divider 09/23/1992 LANL NNSS U3ml Shaft

36 Dixie 04/06/1953 LANL NNSS Area 7 Airdrop

809 Dofino 03/08/1977 LLNL NNSS U10ba Shaft

809 Dofino-Lawton 03/08/1977 LLNL NNSS U10ba Shaft

12 Dog 

(Operation Greenhouse) 04/08/1951 LANL Enewetak Atoll - - - - Tower

19 Dog 

(Operation Buster) 11/01/1951 LANL NNSS Area 7 Airdrop

26 Dog 

(Operation Tumbler-Snapper) 05/01/1952 LANL NNSS Area 7 Airdrop

144 Dogwood 07/05/1958 LLNL Enewetak Atoll - - - - Barge

950 Dolcetto  08/30/1984 LANL NNSS U7bi Shaft

174 Dona Ana 10/16/1958 LANL NNSS Area 7 Balloon

513 Door Mist 08/31/1967 LANL/DoD NNSS U12g.07 Tunnel

102 Doppler 08/23/1957 LANL NNSS Area 7 Balloon

207 Dormouse  01/30/1962 LANL NNSS U3aq Shaft

222 Dormouse Prime  04/05/1962 LANL NNSS U3az Shaft

534 Dorsal Fin 02/29/1968 LANL/DoD NNSS U12e.10 Tunnel

465 Double Play 06/15/1966 LLNL/DoD NNSS U16a.03 Tunnel

319 Double Tracks 05/15/1963 LANL/DoD/UK NTTR - - - - Surface

439 Dovekie  01/21/1966 LANL NNSS U3cd Shaft

843 Draughts  09/27/1978 LANL NNSS U7al Shaft

392 Drill (Source-Lower)  12/05/1964 LLNL NNSS U2ai Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
135

21:15:00.16 37.134236 -116.070624 4,286 -624 Weapons Related 3.4 kt 392

13:00:00.15 37.120213 -116.041167 4,200 -486 Weapons Related Less than 20 kt 365

13:33:00.14 37.174380 -116.057265 4,293 -848 Plowshare 11.7 kt 372

13:30:00.20 37.165947 -116.039283 4,312 -1,466 Weapons Related Less than 20 kt 370

16:00:00.00 1.490000 -157.327000 0 9,090 Weapons Related 52 kt 255

13:56:28.14 37.111103 -116.058798 4,195 -2,201 Weapons Related 20 to 200 kt 460

15:15:00.09 37.000331 -116.043928 3,961 -1,250 Weapons Related 20 to 150 kt 945

14:13:43.10 37.242607 -116.431741 6,520 -1,784 Weapons Related 70 kt 451

19:15:00.12 37.074528 -116.000132 4,238 -1,400 Joint US-UK Less than 20 kt 878

16:02:00.15 37.130971 -116.044749 4,203 -541 Weapons Related 5.3 kt 348

13:47:00.00 36.805100 -115.950200 3,140 1,080 Weapons Related 1 kt 9

18:27:00.00 11.665400 162.233800 10 300 Weapons Related 47 kt 13

16:30:00.00 37.091900 -116.025300 4,224 1,314 Weapons Related 31 kt 20

12:15:00.00 37.053040 -116.103504 4,329 300 Weapons Related 12 kt 27

14:36:30.08 37.032743 -116.044006 4,005 -1,245 Weapons Related Less than 20 kt 820

14:10:00.17 37.115640 -116.088262 4,263 -1,350 Weapons Related 20 to 200 kt 771

14:00:00.00 37.086540 -116.024805 4,186 500 Weapons Related 83 tons 160

15:00:00.16 37.122589 -116.048079 4,200 -714 Weapons Related 4.5 kt 242

14:45:00.00 37.138735 -116.064073 4,284 -725 Weapons Related Less than 20 kt 498

19:40:00.09 37.270022 -116.498473 6,124 -1,792 Joint US-UK 20 to 150 kt 954

18:30:00.00 11.677200 162.185255 0 9 Weapons Related 880 kt 139

19:16:00.11 37.001093 -116.032277 3,955 -1,251 Weapons Related Less than 20 kt 741

15:08:23.10 37.110981 -116.035477 4,245 -723 Weapons Related Less than 20 kt 429

14:50:00.04 37.033134 -116.014538 3,996 -994 Weapons Related Less than 20 kt 667

15:39:18.15 37.140792 -116.064050 4,289 -853 Weapons Related Less than 20 kt 434

15:25:00.17 37.287894 -116.298378 6,991 -1,891 Weapons Related Less than 20 kt 845

17:02:00.00 1.565000 -157.365000 0 5,510 Weapons Related 500 kt 239

15:30:00.00 36.797923 -115.929776 3,077 2,423 Weapons Effects 27 kt 40

18:15:00.00 11.540100 162.357950 10 300 Weapons Related 14.9 kt 73

16:30:00.13 37.048350 -116.034526 4,028 -240 Safety Experiment Low 217

16:00:00.09 37.074984 -116.032691 4,102 -2,095 Weapons Related 20 to 200 kt 753

14:40:00.16 37.106546 -116.038295 4,216 -2,149 Weapons Related 20 to 200 kt 789

20:30:00.00 37.168412 -116.044669 4,288 -67 Weapons Effects 1 kt 56

17:13:00.12 37.006354 -116.015722 3,959 -1,053 Weapons Related Less than 20 kt 760

14:00:00.09 37.309910 -116.365105 6,734 -2,811 Weapons Related 200 to 500 kt 793

00:00:00.15 37.194804 -116.205604 7,472 -840 Weapons Related 55 tons 188

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

134

392 Drill (Target-Upper)  12/05/1964 LLNL NNSS U2ai Shaft

365 Driver 05/07/1964 LLNL NNSS U9ar Shaft

372 Dub  06/30/1964 LLNL NNSS U10a Shaft

370 Duffer  06/18/1964 LLNL NNSS U10dS Shaft

255 Dulce 06/17/1962 LANL Christmas Island area - - - - Airdrop

460 Dumont  05/19/1966 LLNL NNSS U2t Shaft

945 Duoro  06/20/1984 LANL NNSS U3lv Shaft

451 Duryea 04/14/1966 LLNL NNSS U20a-1 Shaft

878 Dutchess 10/24/1980 LANL/UK NNSS U7bm Shaft

348 Eagle  12/12/1963 LLNL NNSS U9av Shaft

9

Easy 

(Operation Ranger) 02/01/1951 LANL NNSS Area 5 Airdrop

13 Easy 

(Operation Greenhouse) 04/21/1951 LANL Enewetak Atoll - - - - Tower

20 Easy 

(Operation Buster) 11/05/1951 LANL NNSS Area 7 Airdrop

27 Easy 

(Operation Tumbler-Snapper) 05/07/1952 LANL NNSS Area 1 Tower

820 Ebbtide  09/15/1977 LANL NNSS U3kt Shaft

771 Edam  04/24/1975 LLNL NNSS U2dy Shaft

160 Eddy 09/19/1958 LANL NNSS Area 7 Balloon

242 Eel  05/19/1962 LLNL NNSS U9m Shaft

498 Effendi  04/27/1967 LLNL NNSS U2ap Shaft

954 Egmont 12/09/1984 LLNL/UK NNSS U20al Shaft

139 Elder 06/27/1958 LANL Enewetak Atoll - - - - Barge

741 Elida 12/19/1973 LANL NNSS U3hy Shaft

429 Elkhart  09/17/1965 LLNL NNSS U9bs Shaft

667 Embudo  06/16/1971 LANL NNSS U3hd Shaft

434 Emerson  12/16/1965 LLNL NNSS U2al Shaft

845 Emmenthal 11/02/1978 LLNL NNSS U19t Shaft

239 Encino 05/12/1962 LANL Christmas Island area - - - - Airdrop

40 Encore 05/08/1953 LANL/DoD NNSS Area 5 Airdrop

73 Erie 05/30/1956 LANL Enewetak Atoll - - - - Tower

217 Ermine 03/06/1962 LANL NNSS U3ab Shaft

753 Escabosa  07/10/1974 LANL NNSS U7ac Shaft

789 Esrom  02/04/1976 LLNL NNSS U7ak Shaft

56 ESS 03/23/1955 LANL NNSS U10 ESS Crater

760 Estaca 10/17/1974 LANL NNSS U3ja Shaft

793 Estuary 03/09/1976 LANL NNSS U19g Shaft

188 Evans 10/29/1958 LLNL NNSS U12b.04 Tunnel

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
137

13:30:00.14 37.111087 -116.029646 4,288 -673 Weapons Related Less than 20 kt 371

15:00:00.09 37.102858 -116.006568 4,392 -1,261 Weapons Related Less than 20 kt 925

14:44:00.17 37.143116 -116.088389 4,364 -1,760 Weapons Related 20 to 150 kt 856

13:38:30.16 37.124448 -116.079753 4,274 -1,530 Joint US-UK 20 to 200 kt 750

15:30:00.07 37.135821 -116.086900 4,322 -2,189 Weapons Related 20 to 150 kt 827

15:30:00.16 37.273338 -116.411164 6,581 -2,260 Weapons Related 20 to 150 kt 848

18:15:00.08 38.634221 -116.216221 6,030 -3,200 Weapons Related 200 to 1000 kt 528

15:00:00.04 37.054329 -116.023095 4,047 -889 Weapons Related Less than 20 kt 496

16:30:00.13 37.194884 -116.209161 7,443 -812 Weapons Related 150 tons 204

14:55:26.14 37.160491 -116.083743 4,423 -549 Weapons Related 1.4 kt 452

18:30:00.13 37.058292 -116.030132 4,052 -1,069 Weapons Related Low 305

17:52:00.13 37.037310 -116.024781 4,002 -792 Weapons Related Low 313

04:00:00.00 11.545500 162.352700 10 2 Weapons Related 20 tons 154

18:30:00.04 37.017048 -116.036598 3,977 -751 Weapons Related Less than 20 kt 570

18:41:00.07 37.037340 -116.030263 4,004 -642 Weapons Related Less than 20 kt 444

17:50:00.00 11.697275 165.280000 0 10 Weapons Related 1.36 Mt 122

23:04:59.63 37.045810 -116.028544 4,020 -1,193 Weapons Related 13.4 kt 200

16:45:00.00 37.033430 -116.032243 4,030 500 Weapons Related 11 kt 110

15:00:00.04 37.047313 -116.030635 4,022 -386 Safety Experiment Less than 20 kt 493

15:00:00.05 37.113320 -116.063205 4,192 -1,734 Plowshare 105 kt 652

15:00:00.05 37.116147 -116.067572 4,220 -500 Plowshare 35 tons 652

15:00:00.05 37.118084 -116.064436 4,220 -1,100 Plowshare 90 tons 652

18:26:00.00 11.688500 165.390000 0 15 Weapons Related 365 kt 75

20:15:24.35 37.139909 -116.084124 4,341 -1,460 Weapons Effects Less than 20 kt 717

20:15:00.24 37.139909 -116.084124 4,341 -2,260 Weapons Related Less than 20 kt 716

20:15:24.35 37.139909 -116.084124 4,341 -1,430 Weapons Effects 20 to 200 kt 717

13:00:00.09 37.003016 -116.032261 3,958 -1,100 Weapons Related Less than 20 kt 871

15:49:00.17 37.146672 -116.063983 4,301 -903 Weapons Related Less than 20 kt 817

16:00:00.00 37.087287 -116.002657 -1,650 -1,650 Weapons Related Less than 20 kt 1044

16:30:00.21 37.140633 -116.033512 4,264 -330 Weapons Related Less than 20 kt 628

16:30:00.21 37.140657 -116.037636 4,242 -802 Weapons Related Less than 20 kt 628

16:30:00.21 37.137364 -116.037663 4,232 -872 Weapons Related Less than 20 kt 628

15:30:00.16 37.299575 -116.327584 6,888 -2,077 Joint US-UK 20 to 150 kt 833

14:45:00.16 37.271354 -116.489338 6,117 -3,997 Weapons Related 200 to 1000 kt 790

16:00:00.15 37.142233 -116.049975 4,231 -1,611 Weapons Related 20 to 200 kt 350

17:15:00.10 37.054895 -116.025832 4,047 -635 Weapons Related Less than 20 kt 813

17:04:58.61 37.107161 -116.033112 4,255 -1,269 Weapons Related Less than 20 kt 389

13:47:00.00 36.805100 -115.950200 3,140 1,435 Weapons Related 22 kt 11

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

136

371 Fade  06/25/1964 LLNL NNSS U9be Shaft

925 Fahada 05/26/1983 LANL NNSS U7bh Shaft

856 Fajy  06/28/1979 LLNL NNSS U2fc Shaft

750 Fallon  05/23/1974 LLNL/UK NNSS U2dv Shaft

827 Farallones  12/14/1977 LLNL NNSS U2fa Shaft

848 Farm 12/16/1978 LLNL NNSS U20ab Shaft

528 Faultless 01/19/1968 LLNL Central Nevada - - - - Shaft

496 Fawn  04/07/1967 LANL NNSS U3eo Shaft

204 Feather 12/22/1961 LLNL NNSS U12b.08 Tunnel

452 Fenton  04/23/1966 LLNL NNSS U2m1 Shaft

305 Ferret 02/08/1963 LANL NNSS U3bf Shaft

313 Ferret Prime  04/05/1963 LANL NNSS U3by Shaft

154 Fig 08/18/1958 LLNL/DoD Enewetak Atoll - - - - Surface

570 File  10/31/1968 LANL NNSS U3gb Shaft

444 Finfoot  03/07/1966 LANL NNSS U3du Shaft

122 Fir 05/11/1958 LLNL Bikini Atoll - - - - Barge

200 Fisher  12/03/1961 LANL NNSS U3ah Shaft

110 Fizeau 09/14/1957 LANL NNSS Area 3 Tower

493 Fizz 03/10/1967 LANL NNSS U3fr Shaft

652 Flask-Green  05/26/1970 LLNL NNSS U2az #1 Shaft

652 Flask-Red 05/26/1970 LLNL NNSS U2az #3 Shaft

652 Flask-Yellow 05/26/1970 LLNL NNSS U2az #2 Shaft

75 Flathead 06/12/1956 LANL Bikini Atoll - - - - Barge

717 Flax-Backup  12/21/1972 LLNL NNSS U2dj Shaft

716 Flax-Source  12/21/1972 LLNL NNSS U2dj Shaft

717 Flax-Test  12/21/1972 LLNL NNSS U2dj Shaft

871 Flora 05/22/1980 LANL NNSS U3lg Shaft

817 Flotost  08/16/1977 LLNL NNSS U2ao Shaft

1044 Floydada 08/15/1991 LANL NNSS U7cb Shaft

628 Fob-Blue 01/23/1970 LLNL NNSS U9ITS Y-27 Shaft

628 Fob-Green  01/23/1970 LLNL NNSS U9ITS V-27 Shaft

628 Fob-Red  01/23/1970 LLNL NNSS U9ITS V-24 Shaft

833 Fondutta 04/11/1978 LLNL/UK NNSS U19zS Shaft

790 Fontina 02/12/1976 LLNL NNSS U20f Shaft

350 Fore  01/16/1964 LLNL NNSS U9ao Shaft

813 Forefoot 06/02/1977 LANL NNSS U3kf Shaft

389 Forest 10/31/1964 LLNL NNSS U7a Shaft

11 Fox 

(Operation Ranger) 02/06/1951 LANL NNSS Area 5 Airdrop

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
139

12:00:00.00 37.095488 -116.103616 4,309 300 Weapons Related 11 kt 28

11:55:00.00 37.095488 -116.103616 4,026 300 Weapons Related 140 tons 88

12:40:00.00 37.086540 -116.024805 4,186 750 Weapons Related 4.7 kt 104

16:00:00.10 36.998135 -116.018604 3,951 -1,100 Weapons Related Less than 20 kt 853

23:30:00.00 4.833333 -149.416667 0 11,000 Weapons Related 200 to 1000 kt 232

14:00:00.04 37.021557 -116.017069 3,977 -492 Safety Experiment Less than 20 kt 680

14:00:00.04 37.022656 -116.017197 3,979 -490 Safety Experiment Less than 20 kt 680

14:00:00.04 37.024354 -116.016154 3,980 -843 Weapons Related Less than 20 kt 680

14:00:00.04 37.021901 -116.019772 3,980 -741 Weapons Related Less than 20 kt 680

17:00:00.09 37.174702 -116.088666 4,507 -1,480 Weapons Related 20 to 150 kt 914

15:30:00.04 37.046302 -116.031075 4,023 -389 Weapons Related Less than 20 kt 552

11:49:00.09 37.065592 -116.022829 4,094 -612 Safety Experiment Less than 20 kt 777

15:00:00.07 37.123873 -116.032112 4,251 -1,312 Safety Experiment Less than 20 kt 1052

15:00:00.07 37.123873 -116.032112 4,251 -1,247 Safety Experiment Less than 20 kt 1052

15:00:00.07 37.123873 -116.032112 4,251 -951 Weapons Related Less than 20 kt 1052

12:40:00.00 37.053040 -116.103504 4,250 500 Weapons Related 11 kt 106

16:09:00.06 37.239678 -116.368643 6,710 -1,598 Weapons Related Less than 20 kt 984

11:00:00.00 37.125587 -116.047855 4,193 0 Safety Experiment Zero 192

15:00:00.94 37.116986 -116.032018 4,269 -491 Weapons Related Less than 20 kt 388

19:30:00.14 36.677905 -107.209025 7,204 -4,227 Plowshare 29 kt 524

16:00:00.07 37.100381 -116.048939 4,144 -1,946 Weapons Related 20 to 150 kt 988

20:15:00.17 37.117223 -116.087903 4,268 -1,070 Weapons Related Less than 20 kt 720

21:30:00.00 11.624300 162.303900 10 200 Weapons Related 225 kt 14

11:55:00.00 37.095488 -116.103616 4,028 300 Weapons Related 15 kt 29

15:49:00.12 37.041675 -116.019265 4,012 -917 Weapons Related Low 312

18:05:00.09 37.255785 -116.423251 6,445 -1,869 Joint US-UK 20 to 150 kt 903

14:00:00.04 37.024338 -116.013239 3,980 -790 Weapons Related Less than 20 kt 509

17:30:00.04 37.034822 -116.021715 3,998 -789 Weapons Related Less than 20 kt 515

16:15:00.08 37.082957 -116.066908 4,136 -2,000 Weapons Related 29 kt 975

19:00:00.00 32.263160 -103.866460 3,400 -1,184 Plowshare 3 kt 201

19:01:00.09 37.237751 -116.473638 6,279 -1,800 Weapons Related 20 to 150 kt 974

15:30:00.08 37.112649 -116.122575 4,499 -1,273 Weapons Related 20 to 150 kt 937

14:30:00.16 37.134514 -116.063146 4,260 -656 Weapons Related Less than 20 kt 801

13:04:00.14 37.163922 -116.080512 4,418 -595 Weapons Related Less than 20 kt 594

13:04:00.14 37.159915 -116.081744 4,409 -744 Weapons Related Less than 20 kt 594

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

138

28 Fox 

(Operation Tumbler-Snapper) 05/25/1952 LANL NNSS Area 4 Tower

88 Franklin 06/02/1957 LANL NNSS Area 3 Tower

104 Franklin Prime 08/30/1957 LANL NNSS Area 7 Balloon

853 Freezeout  05/11/1979 LANL NNSS U3kw Shaft

232 Frigate Bird 05/06/1962 LLNL/DoD Pacific - - - - Rocket

680 Frijoles-Deming 09/22/1971 LANL NNSS U3jw Shaft

680 Frijoles-Espuela 09/22/1971 LANL NNSS U3ju Shaft

680 Frijoles-Guaje 09/22/1971 LANL NNSS U3hf Shaft

680 Frijoles-Petaca  09/22/1971 LANL NNSS U3hz Shaft

914 Frisco  09/23/1982 LLNL NNSS U8m Shaft

552 Funnel 06/25/1968 LANL NNSS U3ga Shaft

777 Futtock 06/18/1975 LANL NNSS U3eh Shaft

1052 Galena-Green 06/23/1992 LLNL NNSS U9cv Shaft

1052 Galena-Orange 06/23/1992 LLNL NNSS U9cv Shaft

1052 Galena-Yellow 06/23/1992 LLNL NNSS U9cv Shaft

106 Galileo 09/02/1957 LANL NNSS Area 1 Tower

984 Galveston 09/04/1986 LANL NNSS U19af Shaft

192 Ganymede 10/30/1958 LLNL NNSS S9g Surface

388 Garden 10/23/1964 LLNL NNSS U9aj Shaft

524 Gasbuggy 12/10/1967 LLNL near Farmington, 

New Mexico - - - - Shaft

988 Gascon  11/14/1986 LANL NNSS U4t Shaft

720 Gazook  03/23/1973 LLNL NNSS U2do Shaft

14 George

(Operation Greenhouse) 05/091951 LANL Enewetak Atoll - - - - Tower

29 George

(Operation Tumbler-Snapper) 06/01/1952 LANL NNSS Area 3 Tower

312 Gerbil  03/29/1963 LANL NNSS U3bp Shaft

903 Gibne 04/25/1982 LLNL/UK NNSS U20ah Shaft

509 Gibson  08/04/1967 LANL NNSS U3ew Shaft

515 Gilroy 09/15/1967 LANL NNSS U3ex Shaft

975 Glencoe  03/22/1986 LANL NNSS U4i Shaft

201 Gnome 12/10/1961 LLNL near Carlsbad, 

New Mexico - - - - Shaft

974 Goldstone 12/28/1985 LLNL NNSS U20ao Shaft

937 Gorbea 01/31/1984 LLNL NNSS U2cq Shaft

801 Gouda 10/06/1976 LLNL NNSS U2ef Shaft

594 Gourd-Amber  04/24/1969 LLNL NNSS U2bf Shaft

594 Gourd-Brown  04/24/1969 LLNL NNSS U2bl Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
141

15:30:00.00 36.797923 -115.929776 3,077 524 Weapons Related 15 kt 42

15:00:00.04 37.083333 -116.002451 4,268 -1,807 Weapons Related 20 to 200 kt 625

17:00:00.04 37.098028 -116.027355 4,253 -1,819 Weapons Related 20 to 200 kt 630

15:30:00.08 37.302021 -116.409182 6,470 -3,991 Weapons Related 870 kt 483

17:30:00.15 37.119274 -116.046042 4,182 -988 Weapons Related Intermediate 346

14:15:00.17 37.114758 -116.075575 4,236 -1,031 Weapons Related Less than 20 kt 749

14:00:00.11 37.037296 -116.022040 4,002 -857 Weapons Related Low 339

14:41:00.16 37.145117 -116.049948 4,232 -680 Weapons Related Less than 20 kt 816

14:41:00.16 37.145117 -116.049948 4,232 -1,050 Weapons Related Less than 20 kt 816

18:15:00.08 37.017527 -116.023574 3,975 -856 Weapons Related Less than 20 kt 381

22:00:00.03 37.007111 -116.202949 6,425 -1,000 Weapons Effects Less than 20 kt 409

16:30:00.08 37.041705 -116.024740 4,010 -792 Weapons Related Low 296

18:19:00.00 37.049351 -116.016455 4,043 -892 Weapons Related Low 318

18:00:00.00 37.028664 -116.058714 4,038 40,000 Weapons Effects 3 kt 59

17:06:00.04 37.066970 -116.023153 4,097 -1,193 Weapons Related Less than 20 kt 380

22:15:00.07 37.315753 -116.299858 6,792 -2,688 Weapons Related 365 kt 468

16:00:00.00 36.802261 -115.933075 3,080 50 Weapons Related 1.2 tons 172

15:00:00.11 37.174324 -116.067903 4,375 -1,322 Plowshare 12 kt 390

15:00:00.01 37.129888 -116.037207 4,225 -471 Weapons Related Less than 20 kt 358

19:00:00.20 37.300424 -116.535014 5,903 -3,967 Weapons Related More than 1 Mt 640

16:30:03.16 37.135156 -116.036134 4,237 -605 Weapons Related Less than 20 kt 705

18:00:00.10 37.226214 -116.060187 5,114 -943 Weapons Effects 5.7 kt 210

13:30:00.09 37.232994 -116.424011 6,464 -2,051 Weapons Related 20 to 150 kt 995

14:00:00.16 37.146647 -116.067709 4,312 -1,702 Weapons Related 20 to 200 kt 670

14:55:00.00 37.043860 -116.016502 4,022 -792 Weapons Related Low 320

15:37:00.00 1.470000 -157.195000 0 13,645 Weapons Related 1.2 Mt 252

18:30:00.08 36.991132 -116.018872 3,945 -950 Weapons Related Less than 20 kt 1014

18:30:00.08 36.988660 -116.018890 3,943 -950 Weapons Related Less than 20 kt 1014

12:05:00.00 37.040342 -116.026241 4,006 300 Weapons Related 32 kt 41

18:00:00.08 37.303343 -116.326480 6,891 -2,090 Weapons Related 20 to 150 kt 887

16:00:00.04 37.028499 -116.020744 3,987 -789 Weapons Related Less than 20 kt 545

16:00:01.15 37.125912 -116.039518 4,208 -200 Weapons Related Low 304

13:41:00.09 37.153695 -116.035946 4,298 -656 Weapons Related Less than 20 kt 890

18:00:00.12 37.041549 -116.036114 4,014 -1,340 Weapons Related 67 kt 260

15:20:00.08 37.181096 -116.049312 4,322 -860 Safety Experiment Less than 20 kt 990

15:20:00.08 37.181096 -116.049312 4,322 -740 Weapons Related Less than 20 kt 990

15:20:00.08 37.181096 -116.049312 4,322 -610 Weapons Related Less than 20 kt 990

15:00:00.09 37.088064 -116.053654 4,130 -2,100 Weapons Related 140 kt 860

15:00:00.12 37.137276 -116.133552 4,699 -501 Weapons Related Less than 20 kt 495

20:00:00.09 37.094763 -116.033212 4,192 -2,094 Weapons Related 20 to 150 kt 959

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

140

42 Grable 05/25/1953 LANL NNSS Area 5 Airburst

625 Grape A  12/17/1969 LANL NNSS U7s Shaft

630 Grape B  02/04/1970 LANL NNSS U7v Shaft

483 Greeley  12/20/1966 LLNL NNSS U20g Shaft

346 Greys  11/22/1963 LLNL NNSS U9ax Shaft

749 Grove  05/22/1974 LLNL NNSS U2ds Shaft

339 Grunion  10/11/1963 LANL NNSS U3bz Shaft

816 Gruyere 08/16/1977 LLNL NNSS U9cg Shaft

816 Gruyere-Gradino 08/16/1977 LLNL NNSS U9cg Shaft

381 Guanay  09/04/1964 LANL NNSS U3di Shaft

409 Gum Drop 04/21/1965 LLNL/DoD NNSS U16a.02 Tunnel

296 Gundi  11/15/1962 LANL NNSS U3bm Shaft

318 Gundi Prime  05/09/1963 LANL NNSS U3db Shaft

59 HA 04/06/1955 LANL NNSS Area 1 Airdrop

380 Haddock 08/28/1964 LANL NNSS U3dl Shaft

468 Halfbeak 06/30/1966 LANL NNSS U19b Shaft

172 Hamilton 10/15/1958 LLNL/DoD NNSS Area 5 Tower

390 Handcar 11/05/1964 LLNL NNSS U10b Shaft

358 Handicap  03/12/1964 LLNL NNSS U9ba Shaft

640 Handley 03/26/1970 LLNL NNSS U20m Shaft

705 Haplopappus 06/28/1972 LLNL NNSS U9ITS W-22 Shaft

210 Hard Hat 02/15/1962 LANL/DoD/ SNL NNSS U15a Shaft

995 Hardin 04/30/1987 LLNL NNSS U20av Shaft

670 Harebell  06/24/1971 LLNL NNSS U2br Shaft

320 Harkee  05/17/1963 LANL NNSS U3bv Shaft

252 Harlem 06/12/1962 LLNL Christmas Island area - - - - Airdrop

1014 Harlingen-A  08/23/1988 LANL NNSS U6g Shaft

1014 Harlingen-B 08/23/1988 LANL NNSS U6h Shaft

41 Harry 05/19/1953 LANL NNSS Area 3 Tower

887 Harzer 06/06/1981 LLNL NNSS U19aj Shaft

545 Hatchet  05/03/1968 LANL NNSS U3fz Shaft

304 Hatchie 02/08/1963 LLNL NNSS U9e Shaft

890 Havarti  08/05/1981 LLNL NNSS U10bg Shaft

260 Haymaker  06/27/1962 LANL NNSS U3auS Shaft

990 Hazebrook-Apricot (Orange) 02/03/1987 LLNL NNSS U10bh Shaft

990 Hazebrook-Checkerberry (Red) 02/03/1987 LLNL NNSS U10bh Shaft

990 Hazebrook-Emerald (Green) 02/03/1987 LLNL NNSS U10bh Shaft

860 Hearts  09/06/1979 LANL NNSS U4n Shaft

495 Heilman 04/06/1967 LLNL NNSS U2cg Shaft

959 Hermosa 04/02/1985 LANL NNSS U7bs Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
143

24:00:00.00 11.503000 165.374000 0 12 Weapons Related 14 kt 141

14:10:00.00 37.086540 -116.024805 4,186 377 Safety Experiment 77 tons 166

14:40:00.17 37.136251 -116.034924 4,248 -790 Weapons Related Less than 20 kt 645

14:40:00.17 37.132952 -116.034948 4,242 -870 Weapons Related Less than 20 kt 645

14:25:00.00 37.138431 -116.032162 4,273 -330 Safety Experiment Less than 20 kt 644

16:30:00.13 37.043914 -116.031904 4,019 -788 Weapons Related Low 219

18:30:00.00 11.537300 162.347400 0 13 Weapons Related 5.9 kt 126

11:40:00.00 37.134742 -116.041648 4,230 1,500 Weapons Related 74 kt 93

14:40:00.15 37.128878 -116.030698 4,274 -670 Weapons Related Less than 20 kt 360

20:00:00.07 37.048378 -116.034098 4,026 -231 Safety Experiment Less than 20 kt 394

18:00:00.16 37.124271 -116.034746 4,235 -614 Weapons Related 3.4 kt 220

13:45:00.04 36.992656 -115.996396 3,942 -1,089 Weapons Related Less than 20 kt 606

13:20:00.00 37.040342 -116.026241 4,007 300 Weapons Related 4 kt 54

15:30:00.09 37.263049 -116.491615 6,146 -1,850 Weapons Related 20 to 150 kt 1028

21:10:01.04 37.025802 -116.030016 3,987 -991 Weapons Related Less than 20 kt 689

15:25:00.09 37.347921 -116.316986 6,898 -2,098 Weapons Related 20 to 150 kt 901

16:01:00.00 13.613333 -172.216667 0 12,130 Weapons Related 8.3 Mt 292

19:17:00.07 37.227365 -116.372127 6,753 -1,950 Joint US-UK 20 to 150 kt 1040

11:55:00.00 37.138372 -116.118258 4,492 300 Weapons Related 14 kt 30

19:00:00.08 37.225586 -116.429019 6,493 -2,159 Weapons Related 20 to 150 kt 1045

18:00:00.16 37.127131 -116.045737 4,200 -495 Weapons Related Low 224

14:16:00.17 37.182560 -116.214271 7,550 -1,386 Weapons Effects Less than 20 kt 651

17:05:01.09 37.204715 -116.207275 7,200 -1,130 Weapons Effects Less than 20 kt 564

15:36:08.60 37.113212 -116.041804 4,202 -651 Weapons Related Less than 20 kt 568

17:00:00.17 37.155082 -116.064966 4,319 -640 Weapons Related Less than 20 kt 744

14:45:00.00 37.047565 -116.025425 4,029 25 Weapons Related 7.8 tons 190

17:00:00.08 37.206877 -116.210853 7,346 -1,264 Weapons Effects Less than 20 kt 1053

16:30:00.13 37.145534 -116.066548 4,310 -810 Weapons Effects 7.4 kt 526

18:16:00.00 11.677817 162.204974 0 15 Weapons Related 250 kt 85

15:10:00.07 37.023247 -116.035005 3,985 -1,050 Weapons Effects Less than 20 kt 873

16:00:00.09 37.211973 -116.207639 7,417 -1,339 Weapons Effects Less than 20 kt 913

17:00:00.08 37.200338 -116.204063 7,430 -1,364 Weapons Effects Less than 20 kt 736

17:11:26.09 37.221588 -116.180561 6,769 -1,076 Weapons Effects Less than 20 kt 781

14:55:00.04 37.139465 -116.088314 4,354 -1,798 Weapons Related 20 to 200 kt 604

14:00:00.13 37.044236 -116.037230 4,019 -442 Weapons Related Low 327

15:00:00.17 37.201085 -116.204811 7,394 -1,325 Weapons Effects Less than 20 kt 761

18:06:00.07 37.187733 -116.213832 7,434 -1,263 Weapons Effects Less than 20 kt 823

17:10:00.12 37.043888 -116.021981 4,017 -711 Weapons Related Low 277

16:30:00.20 37.101729 -116.052018 4,152 -2,101 Weapons Related 20 to 150 kt 832

13:02:30.04 37.119384 -116.055988 4,209 -1,346 Weapons Related 20 to 200 kt 603

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

142

141 Hickory 06/29/1958 LLNL Bikini Atoll - - - - Barge

166 Hidalgo 10/05/1958 LANL NNSS Area 7 Balloon

645 Hod-A (Green)  05/01/1970 LLNL NNSS U9ITS X-23 Shaft

645 Hod-B (Red)  05/01/1970 LLNL NNSS U9ITS X-20 Shaft

644 Hod-C (Blue) 05/01/1970 LLNL NNSS U9ITS Z-25 Shaft

219 Hognose  03/15/1962 LANL NNSS U3ai Shaft

126 Holly 05/20/1958 LANL Enewetak Atoll - - - - Barge

93 Hood 07/05/1957 LLNL NNSS Area 9 Balloon

360 Hook  04/14/1964 LLNL NNSS U9bc Shaft

394 Hoopoe 12/16/1964 LANL NNSS U3cf Shaft

220 Hoosic  03/28/1962 LLNL NNSS U9j Shaft

606 Horehound 08/27/1969 LANL NNSS U3gm Shaft

54 Hornet 03/12/1955 LANL NNSS Area 3 Tower

1028 Hornitos 10/31/1989 LLNL NNSS U20bc Shaft

689 Hospah  12/14/1971 LANL NNSS U3je Shaft

901 Hosta 02/12/1982 LANL NNSS U19ak Shaft

292 Housatonic 10/30/1962 LLNL Johnston Island area - - - - Airdrop

1040 Houston 11/14/1990 LANL/UK NNSS U19az Shaft

30 How 06/05/1952 LANL NNSS Area 2 Tower

1045 Hoya 09/14/1991 LLNL NNSS U20be Shaft

224 Hudson  04/12/1962 LLNL NNSS U9n Shaft

651 Hudson Moon 05/26/1970 LLNL/DoD NNSS U12e.12 Tunnel

564 Hudson Seal 09/24/1968 LLNL/DoD NNSS U12n.04 Tunnel

568 Hula  10/29/1968 LLNL NNSS U9bu Shaft

744 Hulsea 03/14/1974 LLNL NNSS U2bx Shaft

190 Humboldt 10/29/1958 LLNL/DoD NNSS Area 3 Tower

1053 Hunters Trophy 09/18/1992 LLNL/DoD NNSS U12n.24 Tunnel

526 Hupmobile  01/18/1968 LLNL NNSS U2y Shaft

85 Huron 07/21/1956 LANL Enewetak Atoll - - - - Barge

873 Huron King  06/24/1980 LANL/DoD NNSS U3ky Shaft

913 Huron Landing 09/23/1982 LANL/DoD NNSS U12n.15 Tunnel

736 Husky Ace 10/12/1973 LANL/DoD NNSS U12n.07 Tunnel

781 Husky Pup 10/24/1975 LLNL/DoD NNSS U12t.03 Tunnel

604 Hutch  07/16/1969 LLNL NNSS U2df Shaft

327 Hutia  06/06/1963 LANL NNSS U3bc Shaft

761 Hybla Fair 10/28/1974 LLNL/DoD NNSS U12n.09 Tunnel

823 Hybla Gold 11/01/1977 LANL/DoD NNSS U12e.20 Tunnel

277 Hyrax  09/14/1962 LANL NNSS U3bh Shaft

832 Iceberg  03/23/1978 LANL NNSS U4g Shaft

603 Ildrim  07/16/1969 LLNL NNSS U2au Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
145

13:00:00.00 37.161740 -116.078057 4,399 -586 Weapons Related Less than 20 kt 557

21:56:00.00 11.629300 162.285000 10 200 Weapons Related 15.2 kt 79

14:05:00.09 37.142791 -116.067808 4,289 -1,640 Weapons Related 20 to 150 kt 1022

15:00:00.09 37.224903 -116.368447 6,734 -2,685 Weapons Related 200 to 1000 kt 784

14:00:00.04 37.014942 -116.003044 3,965 -407 Safety Experiment Less than 20 kt 699

14:00:00.04 37.014793 -116.000993 3,968 -408 Safety Experiment Less than 20 kt 599

14:31:00.09 37.160368 -116.067395 4,342 -965 Weapons Related Less than 20 kt 891

18:17:00.00 11.669300 162.241500 10 200 Weapons Related 45.5 kt 15

13:04:24.10 37.114951 -116.033044 4,264 -537 Weapons Related Less than 20 kt 421

17:00:00.08 37.020598 -116.032814 3,979 -998 Weapons Related Less than 20 kt 837

14:03:30.34 37.001047 -116.023716 3,955 -989 Weapons Related Less than 20 kt 638

14:40:00.08 37.003797 -116.024378 3,960 -1,240 Weapons Related Less than 20 kt 751

14:00:00.09 37.192891 -116.034909 4,411 -655 Weapons Related Less than 20 kt 929

14:30:00.09 37.264063 -116.441091 6,503 -1,992 Weapons Related 20 to 150 kt 978

19:00:00.12 37.044463 -116.027363 4,016 -988 Weapons Related Low 310

16:55:00.09 37.000933 -116.002487 3,951 -592 Weapons Related Less than 20 kt 748

16:42:00.05 37.006567 -116.017474 3,960 -486 Weapons Related Less than 20 kt 697

14:00:00.00 37.160350 -116.053805 4,280 14,830 Weapons Effects About 2 kt 95

16:45:00.09 37.112150 -116.333947 5,066 -23 Weapons Effects 500 tons 269

16:00:00.10 37.091295 -116.052102 4,134 -2,096 Weapons Related 139 kt 899

14:30:00.04 37.314092 -116.461577 6,316 -3,802 Weapons Related Less than 1 Mt 610

16:30:00.00 37.272398 -116.360660 6,694 -2,041 Weapons Related 20 to 150 kt 1049

04:20:00.00 11.503000 165.374000 0 12 Weapons Related 65 kt 148

16:01:00.00 37.123250 -116.038650 4,210 0 Safety Experiment 1.7 tons 183

18:02:47.13 37.171487 -116.049744 4,292 -1,492 Weapons Related 20 to 200 kt 466

15:30:00.08 37.267711 -116.411530 6,593 -2,100 Weapons Related 20 to 150 kt 947

14:00:00.16 37.112445 -116.085367 4,247 -850 Weapons Related Less than 20 kt 699

15:00:00.07 37.085125 -116.082490 4,182 -1,086 Weapons Related Less than 20 kt 830

17:15:00.09 37.281604 -116.454743 6,360 -2,116 Weapons Related 20 to 150 kt 872

13:30:00.16 37.162182 -116.056845 4,278 -870 Weapons Related Less than 20 kt 728

14:30:00.16 37.289997 -116.412434 6,509 -4,150 Weapons Related 200 to 1000 kt 782

19:47:00.14 37.120269 -116.046582 4,187 -745 Plowshare 3 kt 308

15:15:00.08 37.175270 -116.092609 4,542 -1,260 Safety Experiment Less than 20 kt 1018

15:15:00.08 37.175270 -116.092609 4,542 1,210 Safety Experiment Less than 20 kt 1018

16:15:00.08 37.128444 -116.122829 4,526 -1,415 Safety Experiment Less than 20 kt 1021

16:15:00.08 37.128444 -116.122829 4,526 -1,215 Weapons Related Less than 20 kt 1021

17:00:00.09 37.297104 -116.307420 6,986 -2,020 Weapons Related 100 to 150 kt 1013

17:30:00.09 37.011253 -116.018496 3,966 -1,000 Weapons Related Less than 20 kt 764

14:20:00.11 37.069209 -116.031028 4,084 -2,098 Weapons Related 20 to 200 kt 788

23:00:00.15 37.131351 -116.068934 4,275 -742 Weapons Related Low 331

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

144

557 Imp  08/09/1968 LLNL NNSS U2bj Shaft

79 Inca 06/21/1956 LLNL Enewetak Atoll - - - - Tower

1022 Ingot 03/09/1989 LLNL NNSS U2gg Shaft

784 Inlet 11/20/1975 LANL NNSS U19f Shaft

599 Ipecac-A 05/27/1969 LANL NNSS U3hk-a Shaft

599 Ipecac-B 05/27/1969 LANL NNSS U3hk-b Shaft

891 Islay  08/27/1981 LLNL NNSS U2er Shaft

15 Item 05/251951 LANL Enewetak Atoll - - - - Tower

421 Izzer  07/16/1965 LLNL NNSS U9bp Shaft

837 Jackpots 06/01/1978 LANL NNSS U3kj Shaft

638 Jal  03/19/1970 LANL NNSS U3hh Shaft

751 Jara  06/06/1974 LANL NNSS U3hp Shaft

929 Jarlsberg  08/27/1983 LLNL NNSS U10ca Shaft

978 Jefferson 04/22/1986 LLNL NNSS U20ai Shaft

310 Jerboa  03/01/1963 LANL NNSS U3at Shaft

748 Jib 05/08/1974 LANL NNSS U3hb Shaft

697 Jicarilla 04/19/1972 LANL NNSS U3jm Shaft

95 John 07/19/1957 LANL/DoD NNSS Area 10 Rocket

269 Johnnie Boy 07/11/1962 LLNL/DoD NNSS U18j2 Crater

899 Jornada  01/28/1982 LANL NNSS U4j Shaft

610 Jorum 09/16/1969 LLNL NNSS U20e Shaft

1049 Junction 03/26/1992 LANL NNSS U19bg Shaft

148 Juniper 07/22/1958 LLNL Bikini Atoll - - - - Barge

183 Juno 10/24/1958 LLNL NNSS S9f Surface

466 Kankakee  06/15/1966 LLNL NNSS U10p Shaft

947 Kappeli 07/25/1984 LLNL NNSS U20am Shaft

699 Kara 05/11/1972 LLNL NNSS U2dh #3 Shaft

830 Karab  03/16/1978 LLNL NNSS U4ah Shaft

872 Kash 06/12/1980 LLNL NNSS U20af Shaft

728 Kashan  05/24/1973 LLNL NNSS U10av Shaft

782 Kasseri 10/28/1975 LLNL NNSS U20z Shaft

308 Kaweah  02/21/1963 LLNL NNSS U9ab Shaft

1018 Kawich A-Blue 12/09/1988 LLNL NNSS U8n Shaft

1018 Kawich A-White 12/09/1988 LLNL NNSS U8n Shaft

1021 Kawich-Black  02/24/1989 LLNL NNSS U2cu Shaft

1021 Kawich-Red  02/24/1989 LLNL NNSS U2cu Shaft

1013 Kearsarge 08/17/1988 LLNL NNSS U19ax Shaft

764 Keel  12/16/1974 LANL NNSS U3hu Shaft

788 Keelson  02/04/1976 LANL NNSS U7ai Shaft

331 Kennebec  06/25/1963 LLNL NNSS U2af Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
147

11:50:00.00 37.095488 -116.103616 4,309 500 Weapons Related 10 kt 96

18:17:32.10 37.161846 -116.071790 4,368 -644 Weapons Related Less than 20 kt 432

18:10:00.09 37.314382 -116.472374 6,319 -1,777 Weapons Related 20 to 150 kt 1005

14:00:00.08 37.114180 -116.017448 4,391 -945 Weapons Related Less than 20 kt 906

21:00:00.04 37.025767 -116.023511 3,985 -1,466 Weapons Related Less than 20 kt 407

19:00:00.05 37.047027 -116.017846 4,031 -763 Weapons Related Less than 20 kt 475

23:26:00.00 11.623857 162.318780 10 300 Weapons Related 1.49 kt 77

23:30:00.00 11.558800 162.345400 0 1,480 Weapons Related 500 kt 32

12:10:00.00 16.113503 -169.680561 0 tens of miles Weapons Effects Submegaton 293

15:00:00.07 37.053219 -116.046237 4,052 -1,901 Joint US-UK 20 to 150 kt 973

15:30:00.15 37.150838 -116.040983 4,266 -1,613 Plowshare 70 kt 357

18:05:00.16 37.151962 -116.072708 4,344 -1,760 Weapons Related 20 to 150 kt 851

15:00:01.50 37.247887 -116.481068 6,252 -2,075 Weapons Related 76 kt 503

14:00:00.04 37.031750 -116.012497 3,994 -1,089 Weapons Related Less than 20 kt 562

15:45:00.04 37.026099 -116.034128 3,987 -1,191 Weapons Related Less than 20 kt 574

14:29:00.04 37.025877 -115.993703 4,030 -989 Weapons Related Less than 20 kt 566

15:30:00.00 37.116509 -116.054567 4,199 -2,116 Weapons Related 20 to 200 kt 533

18:30:00.00 11.670990 162.198652 5 3 Weapons Related 1.37 Mt 124

13:20:00.15 37.124914 -116.036257 4,267 -836 Weapons Related Low 334

18:20:00.00 11.503166 165.369450 10 14 Weapons Related 110 kt 46

16:09:30.14 37.120549 -116.037147 4,225 -597 Weapons Related Low 316

20:00:00.08 37.116792 -116.127779 4,562 -1,100 Weapons Related Less than 20 kt 904

14:30:00.04 37.158699 -116.068599 4,342 -630 Weapons Related Less than 20 kt 611

14:30:00.04 37.157372 -116.067041 4,331 -610 Weapons Related Less than 20 kt 611

13:33:00.10 37.118948 -116.089777 4,275 -1,070 Weapons Related Less than 20 kt 927

15:00:00.04 37.163914 -116.039702 4,308 -1,450 Weapons Related 25 kt 632

22:30:00.10 37.300029 -116.308310 6,978 -2,020 Weapons Related 20 to 150 kt 986

18:25:00.00 11.553878 162.348050 17 0 Weapons Related 40 kt 69

14:30:00.16 37.179733 -116.053961 4,307 -1,000 Weapons Related Less than 20 kt 684

15:30:00.04 37.021919 -116.023540 3,981 -1,493 Weapons Related 20 to 200 kt 669

18:35:00.04 37.091654 -116.019550 4,246 -1,842 Weapons Related 20 to 200 kt 437

14:30:00.08 37.115537 -116.058505 4,206 -2,346 Weapons Related 20 to 200 kt 518

13:00:00.00 37.086540 -116.024805 4,186 750 Weapons Related 1 kt 109

22:30:00.14 37.032437 -115.988170 4,092 -1,153 Weapons Related Less than 150 kt 1008

11:45:00.00 37.134742 -116.041648 4,230 500 Weapons Related 0.5 tons 89

17:00:00.09 37.104210 -116.053709 4,167 -2,102 Weapons Related 20 to 200 kt 743

13:20:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 1.4 kt 170

18:02:46.00 37.007098 -116.059089 3,995 -955 Weapons Related Less than 20 kt 1038

13:30:00.00 37.162684 -116.075033 4,386 -743 Weapons Related Less than 20 kt 512

15:30:00.16 37.117214 -116.019751 4,363 -1,070 Weapons Related Less than 20 kt 785

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

146

96 Kepler 07/24/1957 LANL NNSS Area 4 Tower

432 Kermet  11/23/1965 LLNL NNSS U2c Shaft

1005 Kernville 02/15/1988 LLNL NNSS U20ar Shaft

906 Kesti 06/16/1982 LLNL NNSS U9cn Shaft

407 Kestrel  04/05/1965 LANL NNSS U3dd Shaft

475 Khaki 10/15/1966 LANL NNSS U3et Shaft

77 Kickapoo 06/13/1956 LLNL Enewetak Atoll - - - - Tower

32 King 11/16/1952 LANL Enewetak Atoll - - - - Airdrop

293 Kingfish 11/01/1962 LANL/DoD Johnston Island area - - - - Rocket

973 Kinibito  12/05/1985 LANL/UK NNSS U3me Shaft

357 Klickitat  02/20/1964 LLNL NNSS U10e Shaft

851 Kloster  02/15/1979 LLNL NNSS U2eo Shaft

503 Knickerbocker 05/26/1967 LLNL NNSS U20d Shaft

562 Knife A 09/12/1968 LANL NNSS U3fb Shaft

574 Knife B  11/15/1968 LANL NNSS U3dz Shaft

566 Knife C  10/03/1968 LANL NNSS U3er Shaft

533 Knox  02/21/1968 LLNL NNSS U2at Shaft

124 Koa 05/12/1958 LANL Enewetak Atoll - - - - Surface

334 Kohocton 08/23/1963 LLNL NNSS U9ak Shaft

46 Koon 04/06/1954 LLNL Bikini Atoll - - - - Surface

316 Kootanai  04/24/1963 LLNL NNSS U9w Shaft

904 Kryddost 05/06/1982 LLNL NNSS U2co Shaft

611 Kyack-A  09/20/1969 LLNL NNSS U2bq1 Shaft

611 Kyack-B  09/20/1969 LLNL NNSS U2bq2 Shaft

927 Laban  08/03/1983 LLNL NNSS U2ff Shaft

632 Labis 02/05/1970 LLNL NNSS U10an Shaft

986 Labquark 09/30/1986 LLNL NNSS U19an Shaft

69 Lacrosse 05/04/1956 LANL Enewetak Atoll - - - - Surface

684 Lagoon  10/14/1971 LLNL NNSS U10ar Shaft

669 Laguna  06/23/1971 LANL NNSS U3fd Shaft

437 Lampblack 01/18/1966 LANL NNSS U7i Shaft

518 Lanpher  10/18/1967 LLNL NNSS U2x Shaft

109 Laplace 09/08/1957 LANL NNSS Area 7 Balloon

1008 Laredo  05/21/1988 LANL NNSS U3mh Shaft

89 Lassen 06/05/1957 LLNL NNSS Area 9 Balloon

743 Latir  02/27/1974 LANL NNSS U4d Shaft

170 Lea 10/13/1958 LANL NNSS Area 7 Balloon

1038 Ledoux 09/27/1990 LANL NNSS U1a.01 Shaft

512 Lexington  08/24/1967 LLNL NNSS U2bm Shaft

785 Leyden 11/26/1975 LLNL NNSS U9cm Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
149

18:40:00.04 37.102659 -116.020804 4,326 -1,842 Weapons Related Less than 20 kt 448

03:00:00.00 11.608900 162.321300 0 8 Weapons Related 11 kt 137

13:30:00.15 37.113711 -116.032882 4,265 -395 Weapons Related Less than 20 kt 375

14:00:00.09 37.149828 -116.083132 4,368 -1,368 Weapons Related 20 to 150 kt 867

17:00:00.00 37.109551 -116.318154 5,178 3 Weapons Effects Low 272

17:00:00.00 37.119142 -116.303697 5,136 3 Weapons Effects Low 265

15:00:00.06 37.227939 -116.375590 6,799 -2,015 Weapons Related 20 to 150 kt 1001

06:00:00.14 37.184127 -116.201996 7,071 -930 Weapons Related 5 kt 173

21:00:00.08 51.436120 179.179220 125 -2,297 Vela Uniform 80 kt 430

16:32:00.16 37.121890 -116.084712 4,275 -1,071 Weapons Related Less than 20 kt 696

15:15:00.04 37.006540 -116.023673 3,963 -1,240 Weapons Related Less than 20 kt 626

17:00:00.08 37.078621 -116.044656 4,109 -1,853 Weapons Related 20 to 150 kt 839

19:12:00.00 37.063384 -116.046158 4,067 -1,500 Weapons Related 20 to 150 kt 1047

19:00:00.00 37.049193 -116.034571 4,028 -484 Safety Experiment 1.5 tons 161

15:37:37.12 37.095580 -116.051591 4,145 -1,095 Weapons Related Less than 20 kt 356

18:00:00.16 37.126555 -116.049629 4,204 -596 Weapons Related 500 tons 202

17:25:00.12 37.168631 -116.206954 7,477 -1,320 Weapons Related Low 300

18:00:00.00 11.535000 162.345000 0 14 Weapons Related 57 kt 129

15:30:00.04 37.000975 -116.010018 3,951 -788 Weapons Related Less than 20 kt 531

18:00:00.16 37.124194 -116.040829 4,202 -196 Weapons Related Low 302

15:20:00.09 37.080135 -116.072758 4,144 -1,350 Weapons Related 20 to 150 kt 917

14:00:00.04 37.012140 -115.992813 4,008 -790 Weapons Related Less than 20 kt 649

17:30:00.00 11.693940 165.416375 0 12 Weapons Related 213 kt 134

18:03:00.08 37.124049 -116.122860 4,526 -1,250 Weapons Related Less than 20 kt 964

00:00:00.00 37.193049 -116.201457 6,725 -125 Safety Experiment 13 tons 164

17:00:00.11 37.023603 -116.029178 3,983 -1,402 Weapons Related Less than 20 kt 780

17:00:00.11 37.009057 -116.201913 6,422 -1,020 Weapons Effects Low 261

15:00:00.17 37.120187 -116.063150 4,220 -2,260 Weapons Related 20 to 150 kt 810

20:45:00.00 37.165768 -116.039213 4,312 -577 Plowshare 2.2 kt 516

13:00:00.09 37.350295 -116.321103 6,873 -2,988 Weapons Related 200 to 1000 kt 778

14:10:00.13 37.046073 -116.019218 4,026 -642 Weapons Related Low 330

17:23:30.04 37.017616 -116.040704 3,978 -1,053 Weapons Related Less than 20 kt 424

15:37:43.10 37.116165 -116.028403 4,298 -600 Weapons Related Less than 20 kt 436

11:20:00.00 37.126459 -116.041931 4,202 50 Weapons Related Zero 189

18:30:00.10 37.027781 -116.040620 3,995 -1,197 Weapons Related Less than 20 kt 852

22:00:00.00 37.193429 -116.201671 6,712 -183 Safety Experiment 1 gram 162

15:20:00.16 37.115841 -116.086199 4,258 -670 Weapons Related Less than 20 kt 702

17:30:00.04 37.051593 -116.024664 4,038 -972 Weapons Related 10.1 kt 401

16:00:00.15 37.055018 -116.034262 4,041 -1,356 Weapons Related Intermediate 270

15:10:00.04 37.045609 -116.030413 4,020 -394 Weapons Related Less than 20 kt 691

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

148

448 Lime 04/01/1966 LANL NNSS U7j Shaft

137 Linden 06/18/1958 LANL Enewetak Atoll - - - - Barge

375 Links 07/23/1964 LLNL NNSS U9bf Shaft

867 Liptauer  04/03/1980 LLNL NNSS U2eh Shaft

272 Little Feller I 07/17/1962 SNL/DoD NNSS Area 18 Surface

265 Little Feller II 07/07/1962 SNL/DoD NNSS Area 18 Surface

1001 Lockney 09/24/1987 LANL NNSS U19aq Shaft

173 Logan 10/16/1958 LLNL NNSS U12e.02 Tunnel

430 Long Shot 10/29/1965 LANL/DoD Amchitka, Alaska - - - - Shaft

696 Longchamps  04/19/1972 LLNL NNSS U2dm Shaft

626 Lovage  12/17/1969 LANL NNSS U3fe Shaft

839 Lowball  07/12/1978 LANL NNSS U7av Shaft

1047 Lubbock  10/18/1991 LANL NNSS U3mt Shaft

161 Luna 09/21/1958 LANL NNSS U3m Shaft

356 Mackerel 02/18/1964 LANL NNSS U4b Shaft

202 Mad 12/13/1961 LLNL NNSS U9a Shaft

300 Madison 12/12/1962 LLNL NNSS U12g.01 Tunnel

129 Magnolia 05/26/1958 LANL Enewetak Atoll - - - - Barge

531 Mallet  01/31/1968 LANL NNSS U3fv Shaft

302 Manatee 12/14/1962 LLNL NNSS U9af Shaft

917 Manteca  12/10/1982 LLNL NNSS U4al Shaft

649 Manzanas 05/21/1970 LANL NNSS U3gr Shaft

134 Maple 06/10/1958 LLNL Bikini Atoll - - - - Barge

964 Maribo 06/26/1985 LLNL NNSS U2cs Shaft

164 Mars 09/28/1958 LLNL NNSS U12f.02 Tunnel

780 Marsh  09/06/1975 LANL NNSS U3kb Shaft

261 Marshmallow 06/28/1962 LLNL/DoD NNSS U16a Tunnel

810 Marsilly  04/05/1977 LLNL NNSS U2el Shaft

516 Marvel  09/21/1967 LLNL NNSS U10dS1 Shaft

778 Mast 06/19/1975 LANL NNSS U19u Shaft

330 Mataco  06/14/1963 LANL NNSS U3bk Shaft

424 Mauve  08/06/1965 LANL NNSS U3dp Shaft

436 Maxwell 01/13/1966 LLNL NNSS U9br Shaft

189 Mazama 10/29/1958 LLNL NNSS Area 9 Tower

852 Memory  03/14/1979 LANL NNSS U3kq Shaft

162 Mercury 09/23/1958 LLNL NNSS U12f.01 Tunnel

702 Merida  06/07/1972 LLNL NNSS U2dn Shaft

401 Merlin  02/16/1965 LANL NNSS U3ct Shaft

270 Merrimac  07/13/1962 LLNL NNSS U3bd Shaft

691 Mescalero 01/05/1972 LANL NNSS U3gu Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
151

17:01:00.00 1.565000 -157.365000 0 2,450 Weapons Related 100 kt 235

13:30:00.04 37.006221 -116.016942 3,960 -490 Weapons Related Less than 20 kt 725

19:15:00.00 36.797923 -115.929776 3,078 400 Weapons Effects 22 kt 61

16:00:00.08 37.112457 -116.056047 4,177 -1,540 Weapons Related 20 to 150 kt 1032

13:40:00.04 37.077804 -115.996158 4,280 -1,639 Weapons Related 20 to 200 kt 499

17:00:00.11 37.221336 -116.181950 6,811 -1,184 Weapons Effects Less than 20 kt 938

18:28:00.09 37.210189 -116.209439 7,383 -1,308 Weapons Effects Less than 20 kt 992

16:00:00.08 37.202059 -116.208708 7,306 -1,237 Weapons Effects Less than 20 kt 505

19:00:00.08 37.103504 -116.024223 4,300 -1,597 Joint US-UK 20 to 150 kt 999

16:10:00.19 37.103545 -116.027600 4,285 -1,865 Weapons Related 20 to 200 kt 719

19:50:00.17 37.209010 -116.213330 7,384 -1,306 Weapons Effects Less than 20 kt 797

14:08:30.10 37.218276 -116.183982 6,924 -1,294 Weapons Effects Less than 20 kt 976

19:15:00.00 11.667000 162.189900 10 7 Weapons Related 10.4 Mt 31

18:44:27.04 36.871674 -115.931994 3,349 -868 Weapons Effects Less than 20 kt 539

21:40:00.13 37.209113 -116.205988 7,317 -1,217 Weapons Effects Less than 20 kt 969

22:06:00.04 51.415670 179.179870 130 -4.003 Weapons Related About 1 Mt 613

15:00:00.06 37.206822 -116.215129 7,359 -1,278 Weapons Effects Less than 20 kt 1036

16:20:00.11 37.011898 -116.045573 3,985 -803 Weapons Related Less than 20 kt 956

18:00:00.09 37.211210 -116.206250 7,347 -1,278 Weapons Effects Less than 20 kt 879

16:00:00.08 37.210258 -116.208127 7,344 -1,272 Weapons Effects Less than 20 kt 752

18:00:00.03 37.009784 -116.207296 6,425 -1,010 Weapons Effects Less than 20 kt 575

14:30:00.09 37.208676 -116.205904 7,401 -1,244 Weapons Effects Less than 20 kt 924

14:00:00.08 37.110078 -116.052290 4,179 -1,735 Plowshare 83 kt 673

18:30:00.13 37.048520 -116.031965 4,028 -630 Weapons Related Low 199

16:15:00.12 37.041639 -116.013094 4,022 -792 Weapons Related Less than 20 kt 367

15:30:00.17 37.216486 -116.184897 6,957 -1,330 Weapons Effects Less than 20 kt 646

18:02:20.42 36.877168 -115.929364 3,393 -868 Weapons Effects Less than 20 kt 609

16:30:00.08 37.234603 -116.164246 6,407 -888 Weapons Effects Less than 20 kt 1004

16:00:00.18 37.219905 -116.178662 6,706 -1,054 Weapons Effects Less than 20 kt 997

17:00:00.16 37.139355 -116.051195 4,234 -1,622 Weapons Related 115 kt 281

20:30:00.06 37.198995 -116.210314 7,413 -1,312 Weapons Effects Less than 150 kt 1019

19:15:00.04 37.207611 -116.209613 7,303 -1,234 Weapons Effects Less than 20 kt 698

23:15:00.09 37.200782 -116.208047 7,345 -1,275 Weapons Effects Less than 20 kt 960

14:40:00.11 37.094783 -116.036976 4,180 -2,090 Weapons Related 20 to 200 kt 775

20:08:00.04 37.037256 -116.014845 4,005 -635 Weapons Related Less than 20 kt 427

15:12:30.07 37.011608 -116.046918 3,985 -851 Weapons Related Less than 20 kt 977

18:06:00.00 11.627589 162.295691 10 300 Weapons Related 360 kt 81

14:55:00.08 37.224276 -116.463540 6,234 -2,093 Weapons Related 20 to 150 kt 900

20:15:00.08 36.991144 -116.021947 3,945 -951 Weapons Related Less than 20 kt 1017

20:15:00.08 36.988677 -116.021971 3,942 -951 Weapons Related Less than 20 kt 1017

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

150

235 Mesilla 05/09/1962 LANL Christmas Island area - - - - Airdrop

725 Mesita 05/09/1973 LANL NNSS U3jd Shaft

61 MET 04/15/1955 LANL/DoD NNSS Area 5 Tower

1032 Metropolis 03/10/1990 LLNL NNSS U2gh Shaft

499 Mickey  05/10/1967 LANL NNSS U7m Shaft

938 Midas Myth/Milagro  02/15/1984 LANL/DoD NNSS U12t.04 Tunnel

992 Middle Note 03/18/1987 LLNL/DoD NNSS U12n.21 Tunnel

505 Midi Mist 06/26/1967 LLNL/DoD NNSS U12n.02 Tunnel

999 Midland 07/16/1987 LANL/UK NNSS U7by Shaft

719 Miera  03/08/1973 LANL NNSS U7ad Shaft

797 Mighty Epic 05/12/1976 LLNL/DoD NNSS U12n.10 Tunnel

976 Mighty Oak 04/10/1986 LLNL/DoD NNSS U12t.08 Tunnel

31 Mike 10/31/1952 LANL Enewetak Atoll - - - - Surface

539 Milk Shake 03/25/1968 LLNL/DoD NNSS U5k Shaft

969 Mill Yard 10/09/1985 LANL/DoD NNSS U12n.20 Tunnel

613 Milrow 10/02/1969 LANL Amchitka, Alaska - - - - Shaft

1036 Mineral Quarry 07/25/1990 LANL/DoD NNSS U12n.22 Tunnel

956 Minero  12/20/1984 LANL NNSS U3lt Shaft

879 Miners Iron 10/31/1980 LANL/DoD NNSS U12n.11 Tunnel

752 Ming Blade 06/19/1974 LANL/DoD NNSS U12n.08 Tunnel

575 Ming Vase 11/20/1968 LANL/DoD NNSS U16a.04 Tunnel

924 Mini Jade 05/26/1983 LANL/DoD NNSS U12n.12 Tunnel

673 Miniata  07/08/1971 LLNL NNSS U2bu Shaft

199 Mink  10/29/1961 LANL NNSS U3ae Shaft

367 Minnow  05/15/1964 LANL NNSS U3cv Shaft

646 Mint Leaf 05/05/1970 LLNL/DoD NNSS U12t.01 Tunnel

609 Minute Steak  09/12/1969 LLNL/DoD NNSS U11f Shaft

1004 Mission Cyber 12/02/1987 LLNL/DoD NNSS U12p.02 Tunnel

997 Mission Ghost 06/20/1987 LANL/DoD NNSS U12t.09 Tunnel

281 Mississippi  10/05/1962 LLNL NNSS U9ad Shaft

1019 Misty Echo 12/10/1988 LANL/DoD NNSS U12n.23 Tunnel

698 Misty North 05/02/1972 LANL/DoD NNSS U12n.05 Tunnel

960 Misty Rain 04/06/1985 LLNL/DoD NNSS U12n.17 Tunnel

775 Mizzen  06/03/1975 LANL NNSS U7ah Shaft

427 Moa  09/01/1965 LANL NNSS U3ed Shaft

977 Mogollon  04/20/1986 LANL NNSS U3li Shaft

81 Mohawk 07/02/1956 LLNL Enewetak Atoll - - - - Tower

900 Molbo 02/12/1982 LLNL NNSS U20ag Shaft

1017 Monahans-A  11/09/1988 LANL NNSS U3lk Shaft

1017 Monahans-B 11/09/1988 LANL NNSS U6i Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
153

17:00:00.05 37.064656 -116.002614 4,175 -1,763 Weapons Related Less than 20 kt 701

15:30:00.07 37.245385 -116.442525 6,522 -2,105 Weapons Related 20 to 150 kt 1043

20:05:00.08 37.102259 -116.075843 4,200 -1,312 Weapons Related 20 to 150 kt 908

14:05:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 2 kt 165

13:00:00.00 37.134742 -116.041648 4,214 500 Weapons Related 8 kt 115

14:15:00.03 37.070762 -116.013873 4,148 -1,584 Weapons Related 20 to 200 kt 650

13:45:00.00 37.095488 -116.103616 4,026 300 Weapons Related 2 kt 51

20:10:00.10 37.177757 -116.067879 4,386 -498 Weapons Effects 2.7 kt 395

19:15:00.16 37.296498 -116.334072 6,919 -4,765 Weapons Related 200 to 1000 kt 787

16:00:00.11 37.012705 -116.046567 3,987 -800 Weapons Related Less than 20 kt 935

20:20:00.12 37.106469 -116.014246 4,391 -802 Weapons Related Less than 20 kt 1029

15:00:00.15 37.130761 -116.067831 4,270 -198 Safety Experiment Low 342

19:05:00.09 37.106175 -116.023250 4,328 -1,857 Joint US-UK 20 to 150 kt 941

21:44:00.04 37.017373 -115.996175 3,991 -592 Weapons Related Less than 20 kt 411

15:19:00.04 37.039433 -116.011061 4,019 -589 Weapons Related Less than 20 kt 492

15:37:00.00 1.565000 -157.365000 0 2,995 Weapons Related 50 kt 237

15:00:00.15 37.132248 -116.047757 4,212 -544 Weapons Related Low 345

18:07:45.20 37.145034 -116.034165 4,266 -895 Weapons Related Less than 20 kt 677

18:07:45.20 37.140628 -116.032143 4,275 -800 Weapons Related Less than 20 kt 677

17:02:00.00 1.550000 -157.350000 0 7,140 Weapons Related 43 kt 246

13:10:00.00 37.095488 -116.103616 4,309 300 Weapons Related 24 kt 34

17:30:00.15 37.154731 -116.074231 4,360 -493 Weapons Related Low 338

16:45:00.14 37.143608 -116.136077 4,764 -1,194 Weapons Related 39 kt 485

13:20:00.15 37.124913 -116.036120 4,227 -194 Weapons Related Low 334

14:50:00.16 37.177828 -116.054766 4,297 -800 Weapons Related Less than 20 kt 721

17:56:00.00 11.679000 165.391500 0 15 Weapons Related 4.5 Mt 83

15:00:00.09 37.053360 -116.021222 4,048 -600 Safety Experiment Less than 20 kt 934

14:15:00.09 37.236163 -116.371062 6,775 -2,098 Weapons Related 20 to 150 kt 907

18:20:00.00 11.666600 162.190000 0 7 Weapons Related 1.69 Mt 49

18:00:00.00 37.193809 -116.200563 7,530 -98 Safety Experiment 115 tons 171

15:08:00.17 37.121173 -116.067457 4,221 -1,522 Joint US-UK 20 to 150 kt 859

21:00:00.08 36.877209 -115.938776 3,381 -785 Weapons Effects Less than 20 kt 482

14:45:30.09 37.168610 -116.046919 4,285 -750 Weapons Related Less than 20 kt 474

12:50:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 12 kt 111

14:00:00.08 37.166110 -116.073116 4,384 -780 Safety Experiment Less than 150 kt 1010

15:00:00.04 37.002620 -116.010004 3,953 -790 Weapons Related Less than 20 kt 587

14:00:00.10 37.128556 -116.034645 4,242 -1,120 Weapons Related Less than 20 kt 888

14:00:00.13 37.136018 -116.048028 4,220 -1,909 Weapons Related 20 to 200 kt 561

14:00:00.00 37.154329 -116.079724 4,385 -1,253 Weapons Related 20 to 200 kt 541

15:35:00.09 37.179898 -116.083993 4,515 -889 Weapons Related Less than 20 kt 866

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

152

701 Monero 05/19/1972 LANL NNSS U3jq Shaft

1043 Montello 04/16/1991 LLNL NNSS U20bf Shaft

908 Monterey  07/29/1982 LLNL NNSS U4aj Shaft

165 Mora 09/29/1958 LANL NNSS Area 7 Balloon

115 Morgan 10/07/1957 LLNL NNSS Area 9 Balloon

650 Morrones 05/21/1970 LANL NNSS U3ei Shaft

51 Moth 02/22/1955 LANL NNSS Area 3 Tower

395 Mudpack  12/16/1964 LLNL/DoD NNSS U10n Shaft

787 Muenster 01/03/1976 LLNL NNSS U19e Shaft

935 Muggins  12/09/1983 LANL NNSS U3ls Shaft

1029 Muleshoe 11/15/1989 LANL NNSS U7bk Shaft

342 Mullet 10/17/1963 LLNL NNSS U2ag Shaft

941 Mundo  05/01/1984 LANL/UK NNSS U7bo Shaft

411 Muscovy  04/23/1965 LANL NNSS U3dx Shaft

492 Mushroom  03/03/1967 LANL NNSS U3ef Shaft

237 Muskegon 05/11/1962 LLNL Christmas Island area - - - - Airdrop

345 Mustang  11/15/1963 LLNL NNSS U9at Shaft

677 Nama-Amarylis 08/05/1971 LLNL NNSS U9ITS XY-31 Shaft

677 Nama-Mephisto 08/05/1971 LLNL NNSS U9ITS Z-27 Shaft

246 Nambe 05/27/1962 LANL Christmas Island area - - - - Airdrop

34 Nancy 03/24/1953 LANL NNSS Area 4 Tower

338 Narraguagus 09/27/1963 LLNL NNSS U2f Shaft

485 Nash  01/19/1967 LLNL NNSS U2ce Shaft

334 Natches 08/23/1963 LLNL NNSS U9ak1 Shaft

721 Natoma 04/05/1973 LLNL NNSS U10aw Shaft

83 Navajo 07/10/1956 LANL Bikini Atoll - - - - Barge

934 Navata 09/29/1983 LANL NNSS U3lb Shaft

907 Nebbiolo 06/24/1982 LANL NNSS U19ae Shaft

49 Nectar 05/13/1954 LANL Enewetak Atoll - - - - Barge

171 Neptune 10/14/1958 LLNL NNSS U12c.03 Tunnel

859 Nessel  08/29/1979 LLNL/UK NNSS U2ep Shaft

482 New Point  12/13/1966 LLNL/DoD NNSS U11c Shaft

474 Newark  09/29/1966 LLNL NNSS U10u Shaft

111 Newton 09/16/1957 LANL NNSS Area 7 Balloon

1010 Nightingale 06/22/1988 LLNL NNSS U2ey Shaft

587 Nipper  02/04/1969 LANL NNSS U3gl Shaft

888 Niza  07/10/1981 LLNL NNSS U9cr Shaft

561 Noggin  09/06/1968 LLNL NNSS U9bx Shaft

541 Noor  04/10/1968 LLNL NNSS U2be Shaft

866 Norbo 03/08/1980 LLNL NNSS U8c Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
155

14:00:00.09 37.191937 -116.035247 4,404 -656 Weapons Related Less than 20 kt 946

18:45:00.12 37.046058 -116.016476 4,030 -761 Weapons Related Low 301

21:20:00.00 11.503000 165.374000 0 12 Weapons Related 25.1 kt 127

19:30:00.00 11.605086 162.100486 0 6 Weapons Related 8.9 Mt 140

14:20:00.15 37.161930 -116.083098 4,423 -543 Weapons Related Less than 20 kt 494

17:53:00.07 37.013438 -116.029435 3,970 -1,042 Weapons Related Less than 20 kt 808

15:00:01.90 37.108805 -116.029665 4,286 -1,866 Weapons Related 20 to 200 kt 772

20:30:00.00 37.182847 -116.069270 4,446 25 Safety Experiment Zero 180

21:00:00.08 37.004445 -116.015738 3,958 -689 Weapons Related Less than 20 kt 695

13:33:00.04 37.043620 -116.023357 4,013 -414 Safety Experiment Less than 20 kt 454

16:00:00.15 37.126372 -116.037164 4,221 -868 Weapons Related 10.5 kt 351

15:00:00.11 37.014700 -116.008872 3,966 -1,301 Weapons Related 20 to 150 kt 858

20:30:00.00 11.678501 162.208073 0 8 Weapons Related 202 kt 149

21:00:00.04 37.005427 -116.020939 3,960 -915 Weapons Related Less than 20 kt 695

10:30:00.00 16.358333 -169.535556 0 141,000 Weapons Effects 3.8 Mt 153

20:28:37.11 37.115727 -116.024123 4,332 -568 Weapons Related Less than 20 kt 418

13:50:00.09 37.198428 -116.054836 4,522 -688 Weapons Related Less than 20 kt 942

01:14:00.00 11.540150 162.356400 0 670 Weapons Related 1.7 kt 78

15:30:00.19 37.082010 -116.037435 4,108 -1,838 Weapons Related 20 to 200 kt 709

20:00:00.00 37.049848 -116.032715 4,032 -480 Safety Experiment 38 tons 158

16:00:00.00 1.550000 -157.350000 0 9,011 Weapons Related 81.5 kt 258

13:30:00.00 37.134742 -116.041648 4,215 500 Weapons Related 9.7 kt 97

19:33:00.14 37.046518 -116.025875 4,021 -848 Weapons Related Low 233

19:00:00.07 37.147869 -116.066530 4,315 -810 Weapons Effects 10 kt 582

17:00:00.12 37.045669 -116.040155 4,022 -860 Weapons Related Low 248

16:09:30.14 37.120479 -116.037045 4,225 -190 Weapons Related Low 317

19:00:00.10 36.991440 -116.024995 3,945 -913 Weapons Related Less than 20 kt 738

13:14:00.10 37.280320 -116.524449 6,194 -280 Plowshare 4.3 kt 408

13:10:00.09 37.107563 -116.121757 4,479 -1,100 Weapons Related Less than 20 kt 1023

13:10:00.09 37.107563 -116.121757 4,479 -1,280 Safety Experiment Less than 20 kt 1023

13:10:00.09 37.107563 -116.121757 4,479 -1,324 Safety Experiment Less than 20 kt 1023

19:00:00.10 37.081571 -116.009622 4,224 -1,549 Weapons Related 20 to 150 kt 894

15:37:00.00 1.230000 -157.180000 0 14,330 Weapons Related 3.88 Mt 268

19:10:00.09 37.041217 -116.029549 4,012 -1,191 Joint US-UK 9.5 kt 215

13:59:00.08 37.124987 -116.061260 4,219 -1,575 Weapons Related Less than 20 kt 979

16:05:00.10 36.998545 -116.043942 3,957 -1,047 Weapons Related Less than 20 kt 998

14:00:00.16 37.275877 -116.358226 6,694 -2,234 Weapons Related 20 to 150 kt 840

14:00:00.12 37.151301 -116.077864 4,368 -1,331 Plowshare 38 kt 385

15:45:00.15 37.160401 -116.071105 4,360 -1,085 Weapons Related Less than 20 kt 687

20:00:00.04 37.034775 -116.013150 4,001 -592 Weapons Related 1.3 kt 393

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

154

946 Normanna  07/12/1984 LLNL NNSS U10cb Shaft

301 Numbat  12/12/1962 LANL NNSS U3bu Shaft

127 Nutmeg 05/21/1958 LLNL Bikini Atoll - - - - Barge

140 Oak 06/28/1958 LANL Enewetak Atoll - - - - Barge

494 Oakland 04/04/1967 LLNL NNSS U2bi Shaft

808 Oarlock  02/16/1977 LANL NNSS U3km Shaft

772 Obar 04/30/1975 LANL NNSS U7ag Shaft

180 Oberon 10/22/1958 LLNL NNSS Area 8 Tower

695 Ocate  03/30/1972 LANL NNSS U3jp Shaft

454 Ochre 04/29/1966 LANL NNSS U3ec Shaft

351 Oconto  01/23/1964 LLNL NNSS U9ay Shaft

858 Offshore  08/08/1979 LANL NNSS U3ks Shaft

149 Olive 07/22/1958 LLNL Enewetak Atoll - - - - Barge

695 Onaja  03/30/1972 LANL NNSS U3js Shaft

153 Orange 08/12/1958 LANL/DoD Johnston Island area - - - - Rocket

418 Organdy  06/11/1965 LLNL NNSS U9bo Shaft

942 Orkney 05/02/1984 LLNL NNSS U10be Shaft

78 Osage 06/16/1956 LANL Enewetak Atoll - - - - Airdrop

709 Oscuro  09/21/1972 LANL NNSS U7z Shaft

158 Otero 09/12/1958 LANL NNSS U3q Shaft

258 Otowi 06/22/1962 LANL Christmas Island area - - - - Airdrop

97 Owens 07/25/1957 LLNL NNSS Area 9 Balloon

233 Paca  05/07/1962 LANL NNSS U3ax Shaft

582 Packard  01/15/1969 LLNL NNSS U2u Shaft

248 Packrat  06/06/1962 LANL NNSS U3aw Shaft

317 Paisano  04/24/1963 LLNL NNSS U9w1 Shaft

738 Pajara  12/12/1973 LANL NNSS U3ji Shaft

408 Palanquin 04/14/1965 LLNL NNSS U20k Crater

1023 Palisade-1  05/15/1989 LLNL NNSS U4at Shaft

1023 Palisade-2  05/15/1989 LLNL NNSS U4at Shaft

1023 Palisade-3  05/15/1989 LLNL NNSS U4at Shaft

894 Paliza  10/01/1981 LANL NNSS U7bd Shaft

268 Pamlico 07/11/1962 LLNL Christmas Island area - - - - Airdrop

215 Pampas  03/01/1962 LANL/UK NNSS U3al Shaft

979 Panamint 05/21/1986 LLNL NNSS U2gb Shaft

998 Panchuela  06/30/1987 LANL NNSS U3mg Shaft

840 Panir 08/31/1978 LLNL NNSS U19yS Shaft

385 Par  10/09/1964 LLNL NNSS U2p Shaft

687 Parnassia  11/30/1971 LLNL NNSS U2bc Shaft

393 Parrot  12/16/1964 LANL NNSS U3dk Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
157

08:00:00.00 37.051722 -116.034289 4,033 -500 Safety Experiment 56 tons 98

22:35:00.00 37.049000 -116.034810 4,028 -500 Safety Experiment 1 gram 103

22:15:00.00 37.049895 -116.031734 4,031 -250 Safety Experiment 38 tons 116

18:00:00.16 37.117628 -116.044882 4,183 -766 Weapons Related Low 223

17:00:00.12 37.054996 -116.030153 4,043 -792 Weapons Related Low 278

14:00:00.04 37.010988 -116.008219 3,961 -1,242 Weapons Related Less than 20 kt 681

23:45:00.13 37.041660 -116.016517 4,015 -992 Weapons Related Low 332

15:00:00.04 37.014743 -116.016750 3,969 -889 Weapons Related Less than 20 kt 660

14:00:00.17 37.289635 -116.456143 6,366 -2,239 Weapons Related 20 to 150 kt 854

17:02:00.09 37.154948 -116.039058 4,289 -656 Weapons Related Less than 20 kt 861

18:34:00.04 37.017493 -116.016727 3,972 -981 Weapons Related Less than 20 kt 489

15:01:00.00 1.470000 -157.320000 0 14,995 Weapons Related 2.2 kt 256

19:45:00.04 37.042764 -116.017885 4,016 -593 Weapons Related 1.3 kt 417

14:52:00.04 37.031147 -116.002910 4,010 -1,292 Weapons Related 20 to 200 kt 620

16:02:00.12 37.050421 -116.012330 4,060 -376 Weapons Related Less than 20 kt 359

15:30:00.09 37.227022 -116.056412 5,090 -1,518 Weapons Effects 62 kt 462

18:38:00.14 36.887407 -115.941661 3,586 -970 Weapons Effects Less than 20 kt 453

20:30:00.00 11.651260 162.219650 0 8 Weapons Related 2 Mt 150

15:00:00.10 37.088650 -116.020237 4,220 -680 Weapons Related Less than 20 kt 889

15:38:00.17 37.174076 -116.051669 4,298 -1,125 Weapons Related Less than 20 kt 742

15:38:00.17 37.174076 -116.051669 4,298 -700 Weapons Related Less than 20 kt 742

15:38:00.17 37.174076 -116.051669 4,298 -925 Weapons Related Less than 20 kt 742

20:47:00.12 37.039520 -116.027503 4,006 -859 Weapons Related Less than 20 kt 364

14:30:00.14 37.256661 -116.441629 6,534 -2,046 Weapons Related 200 to 1000 kt 614

13:30:00.04 37.086803 -116.034310 4,146 -1,800 Weapons Related 20 to 200 kt 459

23:00:00.00 11.541000 162.320000 0 6 Weapons Related 255 kt 147

12:00:00.16 37.143931 -116.033488 4,268 -776 Weapons Related Less than 20 kt 654

12:00:00.16 37.140640 -116.034881 4,255 -754 Weapons Related Less than 20 kt 654

11:45:00.20 37.138423 -116.030786 4,284 -331 Weapons Related Less than 20 kt 653

18:17:37.10 37.126269 -116.070340 4,260 -881 Weapons Related Less than 20 kt 441

14:52:00.08 37.014780 -116.023600 3,971 -1,240 Weapons Related Less than 20 kt 621

18:00:00.13 37.221976 -116.158313 6,281 -631 Weapons Related 1.85 kt 225

16:30:00.13 37.048288 -116.032772 4,026 -190 Weapons Related Low 214

14:30:00.15 37.117311 -116.041530 4,201 -296 Safety Experiment Less than 20 kt 379

15:03:30.16 37.128027 -116.044289 4,198 -692 Weapons Related Low 324

13:45:00.04 37.021455 -116.038959 3,984 -784 Weapons Related Less than 20 kt 607

14:02:00.21 37.031057 -115.986466 4,114 -490 Weapons Related Less than 20 kt 747

20:00:00.04 37.140159 -116.131374 4,672 -875 Weapons Related 16.7 kt (Total) 617

20:00:00.04 37.140399 -116.142708 4,894 -816 Weapons Related 16.7 kt (Total) 617

20:00:00.04 37.136282 -116.140839 4,839 -560 Weapons Related 16.7 kt (Total) 617

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

156

98 Pascal-A 07/26/1957 LANL NNSS U3j Shaft

103 Pascal-B 08/27/1957 LANL NNSS U3d Shaft

116 Pascal-C 12/06/1957 LANL NNSS U3e Shaft

223 Passaic  04/06/1962 LLNL NNSS U9l Shaft

278 Peba  09/20/1962 LANL NNSS U3bb Shaft

681 Pedernal 09/29/1971 LANL NNSS U3hg Shaft

332 Pekan  08/12/1963 LANL NNSS U3bw Shaft

660 Penasco  11/19/1970 LANL NNSS U3hl Shaft

854 Pepato 06/11/1979 LLNL NNSS U20ad Shaft

861 Pera  09/08/1979 LLNL NNSS U10bd Shaft

489 Persimmon  02/23/1967 LANL NNSS U3dn Shaft

256 Petit 06/19/1962 LLNL Christmas Island area - - - - Airdrop

417 Petrel  06/11/1965 LANL NNSS U3dy Shaft

620 Piccalilli  11/21/1969 LANL NNSS U3fc Shaft

359 Pike  03/13/1964 LANL NNSS U3cy Shaft

462 Pile Driver 06/02/1966 LANL/DoD NNSS U15a.01 Tunnel

453 Pin Stripe 04/25/1966 LANL/DoD NNSS U11b Shaft

150 Pine 07/26/1958 LLNL Enewetak Atoll - - - - Barge

889 Pineau 07/16/1981 LANL NNSS U7ao Shaft

742 Pinedrops-Bayou 01/10/1974 LLNL NNSS U10as Shaft

742 Pinedrops-Sloat 01/10/1974 LLNL NNSS U10as Shaft

742 Pinedrops-Tawny 01/10/1974 LLNL NNSS U10as Shaft

364 Pipefish  04/29/1964 LANL NNSS U3co Shaft

614 Pipkin 10/08/1969 LLNL NNSS U20b Shaft

459 Piranha  05/13/1966 LANL NNSS U7e Shaft

147 Pisonia 07/17/1958 LANL Enewetak Atoll - - - - Barge

654 Piton-A 05/28/1970 LLNL NNSS U9ITS Y-30 Shaft

654 Piton-B  05/28/1970 LLNL NNSS U9ITS X-27 Shaft

653 Piton-C 05/28/1970 LLNL NNSS U9ITS AA-25 Shaft

441 Plaid II  02/03/1966 LLNL NNSS U2r Shaft

621 Planer 11/21/1969 LANL NNSS U3el Shaft

225 Platte 04/14/1962 LLNL NNSS U12k.01 Tunnel

214 Platypus 02/24/1962 LANL NNSS U3ad Shaft

379 Player 08/27/1964 LLNL NNSS U9cc Shaft

324 Pleasant  05/29/1963 LLNL NNSS U9ah Shaft

607 Pliers  08/27/1969 LANL NNSS U3gn Shaft

747 Plomo 05/01/1974 LANL NNSS U3ff Shaft

617 Pod-A 10/29/1969 LLNL NNSS U2ch Shaft

617 Pod-B 10/29/1969 LLNL NNSS U2ci Shaft

617 Pod-C 10/29/1969 LLNL NNSS U2cj Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
159

20:00:00.04 37.135291 -116.136825 4,761 -1,025 Weapons Related 16.7 kt (Total) 617

13:00:00.00 37.159219 -116.053821 4,263 -640 Weapons Related Less than 20 kt 523

14:30:00.17 37.158739 -116.073860 4,366 -700 Weapons Related Less than 20 kt 734

15:19:00.06 37.047677 -116.011675 4,053 -686 Weapons Related 1.5 kt 537

13:21:08.11 37.131746 -116.067724 4,270 -440 Weapons Related Less than 20 kt 422

14:15:00.08 37.089762 -116.002635 4,300 -1,197 Weapons Related Less than 20 kt 968

14:15:00.09 37.255836 -116.329461 6,899 -2,891 Weapons Related 200 to 500 kt 795

03:30:00.00 11.694458 165.265189 0 12 Weapons Related 9.3 Mt 145

15:00:00.16 37.152431 -116.084203 4,397 -2,150 Weapons Related 20 to 200 kt 756

15:30:00.17 37.178360 -116.052424 4,305 -651 Weapons Related Less than 20 kt 765

15:30:00.16 37.178360 -116.052424 4,305 -901 Weapons Related Less than 20 kt 765

19:15:12.40 37.148376 -116.086726 4,388 -1,528 Weapons Related 20 to 200 kt 732

12:30:00.00 37.122090 -116.035276 4,236 300 Weapons Related 2 kt 60

15:13:00.16 37.159923 -116.077282 4,387 -692 Weapons Related Less than 20 kt 746

14:45:00.08 37.091989 -116.028092 4,207 -1,860 Weapons Related 20 to 200 kt 731

14:00:00.08 37.012074 -116.031159 3,970 -1,030 Weapons Related Less than 20 kt 757

15:00:00.09 36.983093 -116.005447 3,932 -1,049 Weapons Related Less than 20 kt 994

13:30:00.00 36.797923 -115.929776 3,076 700 Weapons Related 37 kt 91

22:10:00.00 36.984430 -115.961640 4,200 3 Safety Experiment Zero 65

21:15:00.00 36.980075 --115.959525 4,200 3 Safety Experiment Zero 66

19:55:00.00 36.975695 -115.957455 4,200 3 Safety Experiment 36 grams 67

21:30:00.00 36.971340 -115.955350 4,200 3 Safety Experiment 1 ton 68

14:27:00.00 37.319302 -115.906141 4,585 0 Safety Experiment Zero 86

14:30:00.04 37.059367 -116.039682 4,053 -1,593 Weapons Related Less than 20 kt 464

15:00:00.90 37.000983 -116.012073 4,002 -604 Safety Experiment Less than 20 kt 763

19:00:00.04 37.009209 -116.009951 3,959 -1,092 Weapons Related Less than 20 kt 446

13:45:00.04 37.282839 -116.501537 6,088 -1,964 Weapons Related 20 to 200 kt 597

14:00:00.11 37.023366 -116.037231 3,987 -1,411 Weapons Related Less than 20 kt 755

20:00:00.09 37.101071 -116.031400 4,241 -1,900 Weapons Related 20 to 150 kt 868

19:00:00.17 37.126821 -116.084743 4,271 -1,778 Joint US-UK 20 to 150 kt 846

14:30:00.00 37.094825 -116.024500 4,249 100 Weapons Related 79 tons 169

15:00:00.00 37.189744 -116.048555 4,387 -710 Weapons Related Less than 20 kt 910

19:04:00.00 1.565000 -157.365000 0 5,230 Weapons Related 670 kt 231

02:15:00.00 11.545500 162.352700 10 3 Weapons Related Zero 152

20:00:00.09 37.102435 -116.055712 4,159 -1,900 Weapons Related 20 to 150 kt 850

17:00:00.14 37.045566 -116.035331 4,021 -539 Weapons Related Low 247

17:00:00.00 37.123685 -116.049093 4,201 -655 Weapons Related Less than 20 kt 558

16:59:59.45 37.195732 -116.204029 7,515 -899 Weapons Related 1.7 kt 112

15:00:00.00 37.206910 -116.215115 7,359 -1,278 Weapons Related Less than 20 kt 1036

17:00:00.20 37.130265 -116.045605 4,204 -513 Weapons Related Low 276

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

158

617 Pod-D  10/29/1969 LLNL NNSS U2ck Shaft

523 Polka 12/06/1967 LLNL NNSS U10ai Shaft

734 Polygonum 10/02/1973 LLNL NNSS U2by Shaft

537 Pommard 03/14/1968 LANL NNSS U3ee Shaft

422 Pongee 07/22/1965 LLNL NNSS U2ah Shaft

968 Ponil  09/27/1985 LANL NNSS U7bv Shaft

795 Pool 03/17/1976 LANL NNSS U19p Shaft

145 Poplar 07/12/1958 LLNL Bikini Atoll - - - - Barge

756 Portmanteau  08/30/1974 LLNL NNSS U2ax Shaft

765 Portola 02/06/1975 LLNL NNSS U10bb Shaft

765 Portola-Larkin 02/06/1975 LLNL NNSS U10bb Shaft

732 Portulaca  06/28/1973 LLNL NNSS U2bv Shaft

60 Post 04/09/1955 LLNL NNSS Area 9 Tower

746 Potrero  04/23/1974 LLNL NNSS U2eb Shaft

731 Potrillo  06/21/1973 LANL NNSS U7af Shaft

757 Pratt  09/25/1974 LANL NNSS U3hq Shaft

994 Presidio 04/22/1987 LANL NNSS U6d Shaft

91 Priscilla 06/24/1957 LANL/DoD NNSS Area 5 Balloon

65 Project 56 No. 1 11/01/1955 LANL NNSS Area 11a Surface

66 Project 56 No. 2 11/03/1955 LANL NNSS Area 11b Surface

67 Project 56 No. 3 11/05/1955 LANL NNSS Area 11c Surface

68 Project 56 No. 4 01/18/1956 LANL NNSS Area 11d Surface

86 Project 57 No. 1 04/24/1957 LANL/DoD NTTR - - - - Surface

464 Puce 06/10/1966 LANL NNSS U3bs Shaft

763 Puddle 11/26/1974 LANL NNSS U3kg Shaft

446 Purple  03/18/1966 LANL NNSS U3ds Shaft

597 Purse  05/07/1969 LLNL NNSS U20v Shaft

755 Puye  08/14/1974 LANL NNSS U3jl Shaft

868 Pyramid  04/16/1980 LANL NNSS U7be Shaft

846 Quargel  11/18/1978 LLNL/UK NNSS U2fb Shaft

169 Quay 10/10/1958 LANL NNSS Area 7 Tower

910 Queso 08/11/1982 LLNL NNSS U10bf Shaft

231 Questa 05/04/1962 LANL Christmas Island area - - - - Airdrop

152 Quince 08/06/1958 LLNL/DoD Enewetak Atoll - - - - Surface

850 Quinella  02/08/1979 LANL NNSS U4l Shaft

247 Raccoon  06/01/1962 LANL NNSS U3ajS Shaft

558 Rack  08/15/1968 LLNL NNSS U9ap Shaft

112 Rainier 09/19/1957 LLNL NNSS U12b Tunnel

1036 Randsburg 07/25/1990 LLNL/DoD NNSS U12n.22a Tunnel

276 Raritan  09/06/1962 LLNL NNSS U9u Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
160

37 Ray 04/11/1953 LLNL NNSS Area 4 Tower

829 Reblochon  02/23/1978 LLNL NNSS U2en Shaft

443 Red Hot 03/05/1966 LANL/DoD NNSS U12g.06 Tunnel

804 Redmud  12/08/1976 LANL NNSS U7ab Shaft

138 Redwood 06/27/1958 LLNL Bikini Atoll - - - - Barge

440 Reo  01/22/1966 LLNL NNSS U10m Shaft

442 Rex 02/24/1966 LLNL NNSS U20h Shaft

1011 Rhyolite 06/22/1988 LLNL NNSS U2ey Shaft

826 Rib  12/14/1977 LANL NNSS U3jv Shaft

551 Rickey  06/15/1968 LANL NNSS U19c Shaft

254 Rinconada 06/15/1962 LANL Christmas Island area - - - - Airdrop

203 Ringtail  12/17/1961 LANL NNSS U3ak Shaft

176 Rio Arriba 10/18/1958 LANL NNSS Area 3 Tower

726 Rio Blanco-1 05/17/1973 LLNL near Meeker, 

Colorado - - - - Shaft

726 Rio Blanco-2 05/17/1973 LLNL near Meeker, 

Colorado - - - - Shaft

726 Rio Blanco-3 05/17/1973 LLNL near Meeker, 

Colorado - - - - Shaft

877 Riola 09/25/1980 LLNL NNSS U2eq Shaft

484 Rivet I 01/18/1967 LLNL NNSS U10aa Shaft

487 Rivet II  01/26/1967 LLNL NNSS U10z Shaft

491 Rivet III  03/02/1967 LLNL NNSS U10y Shaft

798 Rivoli 05/20/1976 LLNL NNSS U2eg Shaft

283 Roanoke  10/12/1962 LLNL NNSS U9q Shaft

936 Romano  12/16/1983 LLNL NNSS U2ex Shaft

45 Romeo 03/26/1954 LANL Bikini Atoll - - - - Barge

971 Roquefort  10/16/1985 LLNL NNSS U4as Shaft

132 Rose 06/02/1958 LANL Enewetak Atoll - - - - Barge

896 Rousanne  11/12/1981 LANL/UK NNSS U4p Shaft

470 Rovena  08/10/1966 LLNL NNSS U10s Shaft

807 Rudder  12/28/1976 LANL NNSS U7ajS Shaft

608 Rulison 09/10/1969 LLNL near Parachute, 

Colorado - - - - Shaft

844 Rummy  09/27/1978 LANL NNSS U7au Shaft

181 Rushmore 10/22/1958 LLNL NNSS Area 9 Balloon

535 Russet 03/05/1968 LANL/DoD NNSS U6a Shaft

35 Ruth 03/31/1953 LLNL NNSS Area 7 Tower

928 Sabado 08/11/1983 LANL NNSS U3lc Shaft

263 Sacramento  06/30/1962 LLNL NNSS U9v Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type

161

12:45:00.00 37.098891 -116.093345 4,026 100 Weapons Related 200 tons 37

17:00:00.16 37.123631 -116.064701 4,226 -2,160 Weapons Related 20 to 150 kt 829

18:15:00.10 37.174446 -116.209226 7,632 -1,330 Weapons Effects Less than 20 kt 443

14:49:30.08 37.079216 -116.002487 4,251 -1,400 Weapons Related Less than 20 kt 804

17:30:00.00 11.693940 165.416375 0 11 Weapons Related 412 kt 138

15:17:19.10 37.157159 -116.039558 4,296 -683 Weapons Related Less than 20 kt 440

15:55:07.04 37.271783 -116.434726 6,557 -2,202 Weapons Related 19 kt 442

14:00:00.08 37.166110 -116.073116 4,384 -680 Weapons Related Less than 150 kt 1011

15:00:00.17 37.017504 -116.018778 3,973 -698 Weapons Related Less than 20 kt 826

13:59:59.97 37.264858 -116.315533 7,032 -2,242 Weapons Related 20 to 200 kt 551

16:00:00.00 1.470000 -157.195000 0 9,105 Weapons Related 800 kt 254

16:35:00.13 37.043114 -116.026182 4,014 -1,191 Weapons Related Low 203

14:25:00.00 37.040875 -116.026750 4,010 73 Weapons Related 90 tons 176

16:00:00.12 39.793250 -108.367210 6,630 -5,840 Plowshare 33 kt 726

16:00:00.12 39.793250 -108.367210 6,630 -6,230 Plowshare 33 kt 726

16:00:00.12 39.793250 -108.367210 6,630 -6,690 Plowshare 33 kt 726

15:26:30.08 37.115814 -116.065438 4,203 -1,391 Weapons Related 1.07 kt 877

14:55:00.00 37.165072 -116.047418 4,273 -498 Weapons Related Less than 20 kt 484

16:30:00.00 37.164751 -116.048930 4,267 -648 Weapons Related Less than 20 kt 487

15:00:00.00 37.165822 -116.049570 4,270 -898 Weapons Related Less than 20 kt 491

17:30:00.16 37.137153 -116.067448 4,284 -656 Weapons Related Less than 20 kt 798

15:00:00.16 37.122688 -116.051680 4,198 -580 Weapons Related Low 283

18:30:00.09 37.140400 -116.072939 4,311 -1,690 Weapons Related 20 to 150 kt 936

18:30:00.00 11.697130 165.274200 0 7 Weapons Related 11 Mt 45

21:35:00.09 37.109900 -116.122255 4,488 -1,363 Weapons Related 20 to 150 kt 971

18:45:00.00 11.532600 162.342600 0 15 Weapons Related 15 kt 132

15:00:00.10 37.108104 -116.049847 4,166 -1,697 Joint US-UK 20 to 150 kt 896

13:16:00.07 37.168619 -116.048635 4,281 -635 Weapons Related Less than 20 kt 470

18:00:00.08 37.100446 -116.037331 4,205 -2,095 Weapons Related 20 to 150 kt 807

21:00:00.01 39.405350 -107.948470 8,200 -8,425 Plowshare 40 kt 608

17:20:00.08 37.079756 -116.052192 4,111 -2,099 Weapons Related 20 to 150 kt 844

23:40:00.00 37.134742 -116.041648 4,244 500 Weapons Related 188 tons 181

15:30:00.04 36.969998 -116.056680 3,930 -393 Weapons Related Less than 20 kt 535

13:00:00.00 37.085291 -116.022137 4,000 305 Weapons Related 200 tons 35

14:00:00.12 36.997640 -116.003537 3,946 -1,050 Weapons Related Less than 20 kt 928

21:30:00.16 37.117366 -116.048287 4,177 -489 Weapons Related Low 263

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test
163

16:00:00.00 31.142300 -89.570000 265 -2,710 Vela Uniform 5.3 kt 387

15:15:00.08 37.247799 -116.489947 6,235 -1,995 Weapons Related 20 to 150 kt 962

14:30:00.00 37.049734 -116.033384 4,029 -234 Safety Experiment Zero 177

22:00:00.08 37.072058 -116.050879 4,094 -2,299 Weapons Related 20 to 150 kt 824

10:20:00.00 36.797923 -115.929776 3,077 1,500 Weapons Related 4.9 kt 185

03:00:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 1.3 kt 191

15:00:00.15 37.149260 -116.054375 4,254 -1,048 Weapons Related Low 290

15:15:00.08 37.014894 -116.045008 3,989 -593 Weapons Related Less than 20 kt 745

18:50:00.16 37.113001 -116.081690 4,241 -649 Weapons Related Less than 20 kt 694

16:38:30.13 37.039537 -116.030248 4,007 -860 Weapons Related Low 347

13:00:00.15 37.154044 -116.077499 4,373 -738 Weapons Related Low 333

00:59:55.10 37.193818 -116.200738 7,061 -128 Safety Experiment Zero 100

14:00:00.17 37.111749 -116.078002 4,232 -1,033 Weapons Related Less than 20 kt 838

15:33:30.13 37.140440 -116.134038 4,719 -504 Plowshare 1.2 kt 469

14:30:00.06 37.031558 -116.027224 3,995 -989 Weapons Related Less than 20 kt 519

04:00:00.00 11.550000 162.342500 0 20 Safety Experiment Zero 146

17:55:00.10 37.109987 -116.055377 4,175 -2,300 Weapons Related 20 to 150 kt 819

17:32:36.23 37.058797 -116.011408 4,098 -1,401 Weapons Related Less than 20 kt 415

15:35:00.11 37.124387 -116.072996 4,249 -1,519 Weapons Related Less than 150 kt 1007

16:00:00.14 37.343363 -116.566766 5,563 -365 Plowshare 30 kt 577

15:20:00.04 37.003882 -116.040135 3,965 -789 Weapons Related Less than 20 kt 580

14:00:00.04 37.275028 -116.370854 6,761 -3,207 Weapons Related 155 kt 501

20:08:00.04 37.022945 -116.009829 3,975 -991 Weapons Effects Less than 20 kt 427

15:05:00.02 37.137402 -116.034915 4,252 -818 Weapons Related Less than 20 kt 656

15:05:00.02 37.134039 -116.032198 4,265 -631 Weapons Related Less than 20 kt 656

15:05:00.02 37.137302 -116.032171 4,271 -330 Safety Experiment Less than 20 kt 656

17:01:30.08 37.337655 -116.376459 6,754 -740 Vela Uniform Less than 20 kt 543

17:32:00.10 37.017575 -116.032483 3,976 -1,475 Weapons Related Less than 20 kt 818

15:15:00.13 37.164582 -116.075702 4,394 -540 Weapons Related 1.7 kt 619

15:17:00.17 37.161349 -116.073925 4,374 -650 Weapons Related Less than 20 kt 739

19:30:00.08 37.020556 -116.025943 3,979 -1,214 Weapons Related Less than 20 kt 825

14:00:00.04 37.012530 -115.999129 3,976 -389 Safety Experiment Less than 20 kt 615

14:30:00.04 37.011379 -115.999485 3,974 -389 Safety Experiment Less than 20 kt 612

14:30:00.04 37.010461 -116.000435 3,971 -389 Safety Experiment Less than 20 kt 612

14:30:00.04 37.013686 -115.999465 3,974 -408 Safety Experiment Less than 20 kt 612

15:00:00.08 37.181851 -116.085121 4,538 -656 Weapons Related Less than 20 kt 884

17:00:00.15 37.176960 -116.046256 4,317 -635 Plowshare 104 kt 264

15:28:54.11 37.117230 -116.031855 4,269 -473 Weapons Related Less than 20 kt 403

00:55:00.00 11.672427 162.210365 4 0 Weapons Related 13.7 kt 74

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

162

387 Salmon 10/22/1964 LLNL/DoD near Hattiesburg, 

Mississippi - - - - Shaft

962 Salut 06/12/1985 LLNL NNSS U20ak Shaft

177 San Juan 10/20/1958 LANL NNSS U3p Shaft

824 Sandreef  11/09/1977 LANL NNSS U7aq Shaft

185 Sanford 10/26/1958 LLNL NNSS Area 5 Balloon

191 Santa Fe 10/30/1958 LANL NNSS Area 7 Balloon

290 Santee  10/27/1962 LLNL NNSS U10f Shaft

745 Sapello 04/12/1974 LANL NNSS U3ge Shaft

694 Sappho 03/23/1972 LLNL NNSS U2dh #2 Shaft

347 Sardine  12/04/1963 LANL NNSS U3ch Shaft

333 Satsop  08/15/1963 LLNL NNSS U2g Shaft

100 Saturn 08/10/1957 LLNL NNSS U12c.02 Tunnel

838 Satz  07/07/1978 LLNL NNSS U2dq Shaft

469 Saxon  07/28/1966 LLNL NNSS U2cc Shaft

519 Sazerac  10/25/1967 LANL NNSS U3fa Shaft

146 Scaevola 07/14/1958 LANL Enewetak Atoll - - - - Barge

819 Scantling  08/19/1977 LANL NNSS U4h Shaft

415 Scaup  05/14/1965 LANL NNSS U3daS Shaft

1007 Schellbourne  05/13/1988 LLNL NNSS U2gf Shaft

577 Schooner 12/08/1968 LLNL NNSS U20u Crater

580 Scissors  12/12/1968 LANL NNSS U3gh Shaft

501 Scotch 05/23/1967 LANL NNSS U19aS Shaft

427 Screamer  09/01/1965 LANL NNSS U3dg Shaft

656 Scree-Acajou  10/13/1970 LLNL NNSS U9ITS X-24 Shaft

656 Scree-Alhambra  10/13/1970 LLNL NNSS U9ITS Z-21 Shaft

656 Scree-Chamois 10/13/1970 LLNL NNSS U9ITS Z-24 Shaft

543 Scroll 04/23/1968 LLNL/DoD NNSS U19n Shaft

818 Scupper 08/19/1977 LANL NNSS U3hj Shaft

619 Scuttle 11/13/1969 LLNL NNSS U2bh Shaft

739 Seafoam 12/13/1973 LLNL NNSS U2ea Shaft

825 Seamount  11/17/1977 LANL NNSS U3kp Shaft

615 Seaweed B 10/16/1969 LANL NNSS U3hk-d Shaft

612 Seaweed-C 10/01/1969 LANL NNSS U3hk-e Shaft

612 Seaweed-D 10/01/1969 LANL NNSS U3hk-f Shaft

612 Seaweed-E 10/01/1969 LANL NNSS U3hk-c Shaft

884 Seco 02/25/1981 LLNL NNSS U8l Shaft

264 Sedan 07/06/1962 LLNL NNSS U10h Crater

403 Seersucker 02/19/1965 LLNL NNSS U9bm Shaft

74 Seminole 06/06/1956 LANL Enewetak Atoll - - - - Surface

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
165

18:00:00.05 37.049936 -116.022961 4,033 -791 Weapons Related Less than 20 kt 431

18:30:00.00 11.543050 162.347000 0 6 Weapons Related 5.2 kt 142

14:00:00.09 37.297192 -116.438962 6,462 -1,960 Weapons Related 20 to 150 kt 965

15:10:00.09 37.324737 -116.316055 6,742 -1,879 Joint US-UK 20 to 150 kt 881

15:30:00.04 37.041530 -115.993218 4,111 -1,177 Weapons Related Less than 20 kt 553

19:17:00.10 37.023620 -116.032947 3,984 -1,201 Weapons Related Less than 20 kt 916

14:50:00.09 37.028476 -116.016633 3,987 -803 Weapons Related Less than 20 kt 792

23:05:00.04 37.086185 -116.021966 4,195 -1,839 Weapons Related 20 to 200 kt 639

12:00:00.00 37.127880 -116.107280 4,387 500 Weapons Related 17 kt 101

15:00:00.04 37.015444 -115.995165 3,996 -790 Weapons Related Less than 20 kt 584

15:00:00.09 37.229014 -116.364938 6,758 -2,100 Weapons Related 20 to 150 kt 862

17:00:00.10 39.200060 -118.381210 5,250 -1,211 Vela Uniform 12 kt 343

19:45:00.12 37.048408 -116.033673 4,027 -322 Weapons Related Low 196

14:05:00.00 37.152467 -116.037881 4,285 -1,619 Weapons Related 20 to 200 kt 542

17:50:00.04 37.034742 -116.007668 4,010 -788 Weapons Related Less than 20 kt 481

18:35:00.04 37.037278 -116.019303 4,003 -902 Weapons Related Less than 20 kt 438

19:45:00.16 37.114860 -116.041790 4,202 -650 Weapons Related Less than 20 kt 733

14:45:00.00 37.169907 -116.048082 4,286 -652 Plowshare 2.3 kt 476

12:30:00.00 37.053040 -116.103504 4,239 300 Weapons Related 43 kt 39

22:45:00.04 37.250267 -116.347773 6,836 -2,391 Weapons Related 20 to 200 kt 560

18:30:00.00 36.802465 -115.925910 3,078 10 Weapons Effects Low 271

12:30:00.00 37.187200 -116.068670 4,479 700 Weapons Related 44 kt 105

14:30:00.04 37.054842 -115.988992 4,199 -1,127 Weapons Effects 12.7 kt 641

13:30:00.00 37.086540 -116.024805 1,450 1,450 Weapons Related 6 kt 178

13:31:10.04 37.003153 -116.017568 3,957 -440 Safety Experiment Less than 20 kt 708

15:30:00.16 37.138037 -116.035596 4,246 -600 Weapons Related Less than 20 kt 715

15:38:00.12 37.056564 -116.030109 4,046 -493 Weapons Related Less than 20 kt 353

17:30:00.04 37.005723 -116.019762 3,960 -487 Safety Experiment Less than 20 kt 740

14:30:00.04 37.160197 -116.064476 4,326 -700 Weapons Related Less than 20 kt 605

14:30:00.04 37.158140 -116.064657 4,325 -747 Weapons Related Less than 20 kt 605

14:00:00.10 37.113676 -116.026366 4,316 -590 Weapons Related Less than 20 kt 382

14:58:00.08 37.035902 -116.018283 4,000 -601 Weapons Related Less than 20 kt 802

14:00:00.04 37.000912 -115.999744 3,956 -788 Weapons Related Less than 20 kt 555

18:00:00.16 37.163767 -116.074164 4,384 -546 Weapons Related Low 295

15:00:00.00 37.156337 -116.054750 4,261 -1,455 Weapons Related 20 to 200 kt 527

13:00:00.12 37.148685 -116.049404 4,237 -1,587 Weapons Related 20 to 200 kt 508

15:05:00.17 37.132581 -116.069261 4,271 -1,880 Weapons Related 20 to 200 kt 759

09:00:00.00 16.468422 -169.630075 0 250 miles Weapons Effects 1.4 Mt 266

17:15:00.17 37.122999 -116.059385 4,226 -1,850 Weapons Related 90 kt 724

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

164

431 Sepia  11/12/1965 LANL NNSS U3en Shaft

142 Sequoia 07/01/1958 LANL Enewetak Atoll - - - - Barge

965 Serena 07/25/1985 LLNL NNSS U20an Shaft

881 Serpa 12/17/1980 LLNL/UK NNSS U19ai Shaft

553 Sevilla 06/25/1968 LANL NNSS U3fk Shaft

916 Seyval  11/12/1982 LANL NNSS U3lm Shaft

792 Shallows  02/26/1976 LANL NNSS U3jf Shaft

639 Shaper  03/23/1970 LANL NNSS U7r Shaft

101 Shasta 08/18/1957 LLNL NNSS Area 2 Tower

584 Shave  01/22/1969 LANL NNSS U3gk Shaft

862 Sheepshead 09/26/1979 LANL NNSS U19aa Shaft

343 Shoal 10/26/1963 LANL/DoD near Fallon, 

Nevada - - - - Shaft

196 Shrew 09/16/1961 LANL NNSS U3ac Shaft

542 Shuffle  04/18/1968 LLNL NNSS U10t Shaft

481 Sidecar  12/13/1966 LANL NNSS U3ez Shaft

438 Sienna  01/18/1966 LANL NNSS U3cj Shaft

733 Silene 06/28/1973 LLNL NNSS U9ck Shaft

476 Simms  11/05/1966 LLNL NNSS U10w Shaft

39 Simon 04/25/1953 LANL NNSS Area 1 Tower

560 Sled 08/29/1968 LANL NNSS U19i Shaft

271 Small Boy 07/14/1962 LANL/DoD NNSS Area 5 Tower

105 Smoky 08/31/1957 LLNL NNSS Area 8 Tower

641 Snubber 04/21/1970 LANL NNSS U3ev 2S Shaft

178 Socorro 10/22/1958 LANL NNSS Area 7 Balloon

708 Solano 08/09/1972 LANL NNSS U3jx Shaft

715 Solanum 12/14/1972 LLNL NNSS U9ITS W-24.5 Shaft

353 Solendon  02/12/1964 LANL NNSS U3cz Shaft

740 Spar 12/19/1973 LANL NNSS U3jr Shaft

605 Spider-A  08/14/1969 LLNL NNSS U2bp #1 Shaft

605 Spider-B  08/14/1969 LLNL NNSS U2bp #2 Shaft

382 Spoon  09/11/1964 LLNL NNSS U9bd Shaft

802 Sprit 11/10/1976 LANL NNSS U3hc Shaft

555 Spud  07/17/1968 LANL NNSS U3fy Shaft

295 St. Lawrence 11/09/1962 LLNL NNSS U2b Shaft

527 Staccato  01/19/1968 LLNL NNSS U10ah Shaft

508 Stanley  07/27/1967 LLNL NNSS U10q Shaft

759 Stanyan  09/26/1974 LLNL NNSS U2aw Shaft

266 Starfish Prime 07/09/1962 LANL/DoD Johnston Island area - - - - Rocket

724 Starwort  04/26/1973 LLNL NNSS U2bs Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
167

12:15:00.05 31.142300 -89.570000 265 -2,710 Vela Uniform 380 tons 480

18:00:00.16 37.127202 -116.053524 4,209 -595 Weapons Related 3.07 kt 208

15:00:00.04 37.036640 -116.002858 4,038 -1,091 Weapons Related Less than 20 kt 525

14:20:00.17 37.340002 -116.523770 5,560 -2,400 Weapons Related 20 to 200 kt 774

15:00:00.04 37.332546 -116.311550 6,766 -2,191 Weapons Related 20 to 200 kt 538

16:30:00.14 37.044592 -116.035932 4,021 -992 Weapons Related 5.1 kt 205

14:00:00.04 37.119816 -116.128344 4,583 -1,535 Plowshare 31 kt 563

12:25:00.00 37.086540 -116.024805 4,186 1,500 Weapons Related 19 kt 99

15:40:00.14 37.111002 -116.039936 4,213 -1,290 Weapons Related Intermediate 322

14:45:00.09 37.107238 -116.053345 4,169 -2,567 Weapons Related 200 to 500 kt 796

16:40:00.07 37.086522 -116.007738 4,266 -1,698 Weapons Related 20 to 150 kt 815

14:30:00.12 37.043873 -116.019236 4,019 -491 Weapons Related Less than 20 kt 361

13:57:17.10 37.139472 -116.141747 4,872 -742 Weapons Related Less than 20 kt 449

15:30:49.10 37.115376 -116.027364 4,307 -470 Weapons Related Less than 20 kt 405

17:00:00.00 37.131467 -116.039417 4,215 4 Weapons Effects 1.2 kt 21

19:35:00.09 37.082661 -116.343440 5,329 -89 Plowshare 92 tons 396

16:15:00.00 37.038170 -116.057667 4,047 -887 Safety Experiment Less than 20 kt 1037

16:15:00.00 37.038170 -116.057667 4,047 -840 Safety Experiment Less than 20 kt 1037

16:33:00.00 1.520000 -157.280000 0 5,000 Weapons Related 1 Mt 267

15:58:00.16 37.151851 -116.064305 4,312 -657 Weapons Related Less than 20 kt 806

15:21:00.00 1.570000 -157.365000 0 2,940 Weapons Related 97 kt 241

13:10:00.00 37.125507 -116.029525 4,277 -991 Plowshare 3.1 kt 504

20:02:00.00 31.233333 -124.216667 0 - - - - Weapons Effects Low 238

03:00:00.00 11.697275 165.280000 0 12 Weapons Related 92 kt 131

19:05:00.08 37.256269 -116.478298 6,189 -2,232 Weapons Related 20 to 150 kt 874

14:00:00.09 37.060912 -116.046175 4,067 -2,095 Weapons Related 20 to 150 kt 1000

16:30:00.07 37.069546 -115.992974 4,267 -1,090 Weapons Related Less than 20 kt 704

15:04:00.06 37.098243 -116.016380 4,317 -1,700 Weapons Related 20 to 150 kt 980

22:00:00.13 37.195257 -116.201330 7,019 -330 Weapons Related 72 tons 168

14:00:00.04 37.068410 -116.036173 4,070 -1,840 Weapons Related 20 to 200 kt 463

16:08:00.00 1.550000 -157.350000 0 9,030 Weapons Related 2.6 kt 245

15:36:00.05 37.046264 -116.030188 4,021 -288 Safety Experiment Less than 20 kt 471

13:00:00.00 37.116718 -116.083109 4,257 -1,250 Weapons Related 20 to 200 kt 556

19:37:26.20 37.134240 -116.071989 4,291 -816 Weapons Related Less than 20 kt 458

14:00:00.04 37.008778 -116.031186 3,965 -994 Weapons Related Less than 20 kt 601

15:00:00.09 37.126500 -116.089376 4,287 -1,209 Weapons Related Less than 20 kt 865

16:00:00.15 37.128037 -116.050875 4,209 -749 Weapons Related Low 298

10:50:00.00 16.743889 -169.533333 0 252,000 Weapons Effects 3.8 Mt 151

15:00:00.12 37.105563 -116.050269 4,159 -1,747 Weapons Related Less than 150 kt 933

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

166

480 Sterling 12/03/1966 LLNL/DoD near Hattiesburg, 

Mississippi - - - - Shaft

208 Stillwater  02/08/1962 LLNL NNSS U9c Shaft

525 Stilt 12/15/1967 LANL NNSS U3fh Shaft

774 Stilton 06/03/1975 LLNL/DoD NNSS U20p Shaft

538 Stinger 03/22/1968 LANL NNSS U19l Shaft

205 Stoat  01/09/1962 LANL NNSS U3ap Shaft

563 Stoddard  09/17/1968 LLNL NNSS U2cmS Shaft

99 Stokes 08/07/1957 LANL NNSS Area 7 Balloon

322 Stones  05/22/1963 LANL NNSS U9ae Shaft

796 Strait  03/17/1976 LANL NNSS U4a Shaft

815 Strake  08/04/1977 LANL NNSS U7ae Shaft

361 Sturgeon  04/15/1964 LANL NNSS U3bo Shaft

449 Stutz  04/06/1966 LLNL NNSS U2ca Shaft

405 Suede 03/20/1965 LLNL NNSS U9bk Shaft

21 Sugar 11/19/1951 LANL/DoD NNSS Area 9 Surface

396 Sulky 12/18/1964 LLNL NNSS U18d Shaft

1037 Sundown-A 09/20/1990 LANL NNSS U1d Shaft

1037 Sundown-B 09/20/1990 LANL NNSS U1d Shaft

267 Sunset 07/10/1962 LANL Christmas Island area - - - - Airdrop

806 Sutter 12/21/1976 LLNL NNSS U2bw Shaft

241 Swanee 05/14/1962 LLNL Christmas Island area - - - - Airdrop

504 Switch 06/22/1967 LLNL NNSS U9bv Shaft

238 Swordfish 05/11/1962 LANL/DoD Pacific - - - - Underwater

131 Sycamore 05/31/1958 LLNL Bikini Atoll - - - - Barge

874 Tafi 07/25/1980 LLNL NNSS U20ae Shaft

1000 Tahoka  08/13/1987 LANL NNSS U3mf Shaft

704 Tajique 06/28/1972 LANL NNSS U7aa Shaft

980 Tajo  06/05/1986 LANL NNSS U7bl Shaft

168 Tamalpais 10/08/1958 LLNL NNSS U12b.02 Tunnel

463 Tan  06/03/1966 LANL NNSS U7k Shaft

245 Tanana 05/25/1962 LLNL Christmas Island area - - - - Airdrop

471 Tangerine 08/12/1966 LANL NNSS U3eb Shaft

556 Tanya  07/30/1968 LLNL NNSS U2dt Shaft

458 Tapestry  05/12/1966 LLNL NNSS U2an Shaft

601 Tapper  06/12/1969 LANL NNSS U3go Shaft

865 Tarko  02/28/1980 LLNL NNSS U2fd Shaft

298 Taunton  12/04/1962 LLNL NNSS U9aa Shaft

151 Teak 08/01/1958 LANL/DoD Johnston Island area - - - - Rocket

933 Techado 09/22/1983 LANL NNSS U4o Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
169

15:47:11.15 37.140318 -116.067522 4,297 -624 Weapons Effects 7 kt 412

14:55:00.00 37.048291 -116.033225 4,026 -245 Safety Experiment Low 321

16:13:00.17 37.114067 -116.021904 4,354 -1,001 Weapons Related Less than 20 kt 766

15:30:00.16 37.093142 -116.092544 4,234 -862 Weapons Related Less than 20 kt 762

14:55:28.14 37.113290 -116.032221 4,271 -492 Plowshare 370 tons 447

17:30:00.08 37.247807 -116.495104 6,226 -1,969 Weapons Related 20 to 150 kt 1039

18:00:00.09 37.016770 -116.010735 3,952 -1,169 Weapons Related Less than 20 kt 902

19:00:00.10 37.051697 -116.030177 4,033 -993 Joint US-UK Low 299

18:22:00.03 37.044943 -116.014094 4,032 -691 Weapons Related Less than 20 kt 398

19:00:00.04 37.120431 -116.035642 4,235 -1,500 Weapons Related 20 to 200 kt 627

19:00:00.04 37.120640 -116.029477 4,278 -1,370 Weapons Related 20 to 200 kt 627

13:30:00.00 37.125389 -116.048387 4,021 300 Weapons Related 7 kt 52

17:46:00.00 11.680000 165.341000 0 15 Weapons Related 5 Mt 84

20:06:00.06 37.076736 -116.001481 4,244 -1,654 Weapons Related 20 to 150 kt 1020

17:00:00.04 37.090220 -116.006509 4,291 -1,839 Weapons Related 20 to 200 kt 596

14:00:00.00 37.156631 -116.083142 4,408 -757 Weapons Related Less than 20 kt 541

13:43:08.15 37.112583 -116.026890 4,314 -690 Weapons Related Less than 20 kt 425

14:45:00.00 37.281310 -116.306296 7,038 -2,100 Weapons Related 20 to 150 kt 955

07:30:00.00 16.707419 -169.542406 0 tens of miles Weapons Effects Low 294

14:30:00.04 37.070608 -116.005994 4,187 -1,839 Weapons Related 20 to 200 kt 657

20:00:09.09 37.076273 -116.069360 4,131 -1,460 Weapons Related 20 to 150 kt 895

16:19:00.04 37.139862 -116.043129 4,225 -1,442 Weapons Related Less than 20 kt 576

17:00:00.09 37.223368 -116.057840 5,022 -364 Weapons Effects Less than 20 kt 420

15:00:00.15 37.128502 -116.041116 4,203 -195 Weapons Related Low 285

20:34:00.00 37.177200 -116.070050 4,403 25 Safety Experiment 0.2 tons 194

02:15:00.00 11.691220 162.214650 0 10 Weapons Related 11.6 kt 130

22:27:30.04 37.017361 -115.993093 4,010 -742 Weapons Related Less than 20 kt 450

15:00:00.09 37.209695 -116.210129 7,401 -1,328 Weapons Effects Less than 20 kt 931

15:15:00.09 37.106153 -116.057123 4,173 -2,340 Weapons Related 20 to 200 kt 768

16:30:00.11 37.098815 -116.020490 4,296 -1,502 Weapons Related Less than 20 kt 831

15:00:00.04 37.041584 -116.002819 4,059 -789 Weapons Related Less than 20 kt 532

16:45:00.07 37.010640 -116.045556 3,981 -979 Weapons Related Less than 20 kt 991

21:00:00.16 37.118693 -116.034731 4,244 -491 Plowshare 380 tons 340

14:15:00.04 37.075055 -115.996182 4,256 -1,689 Weapons Related 20 to 200 kt 600

17:45:00.09 37.065718 -116.047164 4,079 -2,095 Weapons Related 20 to 150 kt 939

15:20:00.08 37.253352 -116.326091 6,928 -2,166 Weapons Related 20 to 150 kt 961

16:22:53.14 37.125782 -116.045645 4,197 -429 Weapons Related Low 311

15:00:00.07 37.087728 -116.053499 4,129 -2,100 Weapons Related Zero 836

13:32:17.09 37.137027 -116.138007 4,781 -648 Weapons Related Less than 20 kt 455

15:00:00.10 37.058040 -116.048943 4,062 -1,002 Weapons Related Less than 20 kt 892

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

168

412 Tee  05/07/1965 LLNL NNSS U2ab Shaft

321 Tejon 05/17/1963 LANL NNSS U3cg Shaft

766 Teleme  02/06/1975 LLNL NNSS U9cl Shaft

762 Temescal 11/02/1974 LLNL NNSS U4ab Shaft

447 Templar 03/24/1966 LLNL NNSS U9bt Shaft

1039 Tenabo 10/12/1990 LLNL NNSS U20bb Shaft

902 Tenaja  04/17/1982 LANL NNSS U3lh Shaft

299 Tendrac  12/07/1962 LANL/UK NNSS U3ba Shaft

398 Tern  01/29/1965 LANL NNSS U3dw Shaft

627 Terrine-White  12/18/1969 LLNL NNSS U9bi #1 Shaft

627 Terrine-Yellow  12/18/1969 LLNL NNSS U9bi #2 Shaft

52 Tesla 03/01/1955 LLNL NNSS Area 9 Tower

84 Tewa 07/20/1956 LLNL Bikini Atoll - - - - Barge

1020 Texarkana  02/10/1989 LANL NNSS U7ca Shaft

596 Thistle 04/30/1969 LANL NNSS U7t Shaft

541 Throw  04/10/1968 LLNL NNSS U2bg Shaft

425 Ticking 08/21/1965 LLNL NNSS U9bj Shaft

955 Tierra 12/15/1984 LLNL NNSS U19ac Shaft

294 Tightrope 11/04/1962 LANL/DoD Johnston Island area - - - - Rocket

657 Tijeras  10/14/1970 LANL NNSS U7y Shaft

895 Tilci  11/11/1981 LLNL NNSS U4ak Shaft

576 Tinderbox 11/22/1968 LLNL NNSS U9az Shaft

420 Tiny Tot 06/17/1965 LLNL/DoD NNSS U15e Tunnel

285 Tioga 10/18/1962 LLNL NNSS U9f Shaft

194 Titania 10/30/1958 LLNL NNSS Area 8 Tower

130 Tobacco 05/30/1958 LANL Enewetak Atoll - - - - Barge

450 Tomato  04/07/1966 LANL NNSS U3ek Shaft

931 Tomme/Midnight Zephyr 09/21/1983 LLNL/DoD NNSS U12n.18 Tunnel

768 Topgallant  02/28/1975 LANL NNSS U4e Shaft

831 Topmast 03/23/1978 LANL NNSS U7ay Shaft

532 Torch 02/21/1968 LANL NNSS U3fj Shaft

991 Tornero  02/11/1987 LANL NNSS U3ll Shaft

340 Tornillo  10/11/1963 LLNL NNSS U9aq Shaft

600 Torrido  05/27/1969 LANL NNSS U7w Shaft

939 Tortugas  03/01/1984 LANL NNSS U3gg Shaft

961 Towanda 05/02/1985 LANL NNSS U19ab Shaft

311 Toyah  03/15/1963 LLNL NNSS U9ac Shaft

836 Transom 05/10/1978 LANL NNSS U4f Shaft

455 Traveler  05/04/1966 LLNL NNSS U2cd Shaft

892 Trebbiano  09/04/1981 LANL NNSS U3lj Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
171

12:29:00.00 33.677280 -106.475378 4,624 100 Weapons Related 21 kt 1

18:30:00.04 37.046036 -116.013053 4,039 -633 Weapons Related Less than 20 kt 376

14:30:00.03 37.013969 -116.018812 3,968 -389 Safety Experiment Less than 20 kt 658

14:30:00.04 37.013968 -116.018127 3,968 -388 Safety Experiment Less than 20 kt 658

14:30:00.04 37.014762 -116.020175 3,970 -874 Weapons Related Less than 20 kt 658

15:37:00.00 1.490000 -157.327000 0 6,970 Weapons Related 210 kt 250

14:30:00.16 37.093157 -116.095630 4,251 -863 Weapons Related Less than 20 kt 758

21:30:00.00 37.167432 -116.043359 4,294 -620 Weapons Related Less than 20 kt 550

21:30:00.00 37.165358 -116.044309 4,285 -620 Weapons Related Less than 20 kt 550

21:30:00.00 37.165346 -116.041550 4,298 -620 Weapons Related Less than 20 kt 550

21:30:00.00 37.166936 -116.045676 4,282 -896 Weapons Related Less than 20 kt 550

21:30:00.00 37.166925 -116.042920 4,294 -620 Weapons Related Less than 20 kt 550

18:07:00.02 37.085818 -116.056000 4,125 -1,305 Weapons Related Less than 20 kt 1024

16:30:00.04 37.031253 -116.022094 3,991 -889 Weapons Related Less than 20 kt 714

15:24:00.13 37.052743 -116.034247 4,035 -1,359 Weapons Related Low 349

15:30:00.07 37.167656 -116.080143 4,429 -655 Weapons Related Less than 20 kt 624

15:30:00.07 37.169441 -116.080129 4,434 -636 Weapons Related Less than 20 kt 624

15:30:00.07 37.167642 -116.077912 4,415 -636 Weapons Related Less than 20 kt 624

15:30:00.07 37.169427 -116.077891 4,420 -841 Weapons Related Less than 20 kt 624

20:10:00.15 37.149544 -116.056260 4,322 -1,661 Weapons Related 20 to 200 kt 363

13:20:00.00 37.138372 -116.118258 4,491 500 Weapons Related 43 kt 53

15:59:30.03 37.039550 -116.016800 3,996 -412 Weapons Related Less than 20 kt 386

19:05:00.12 37.072790 -116.046825 4,088 -1,749 Weapons Related Less than 150 kt 921

13:08:52.11 37.118498 -116.028555 4,292 -933 Weapons Related Less than 20 kt 416

14:00:00.16 37.220730 -116.475069 6,257 -2,510 Weapons Related 200 to 1000 kt 773

15:10:00.08 37.120775 -116.081431 4,265 -749 Weapons Related Less than 20 kt 579

15:10:00.08 37.117543 -116.080434 4,254 -824 Weapons Related Less than 20 kt 579

15:10:00.08 37.118001 -116.078105 4,249 -749 Weapons Related Less than 20 kt 579

15:10:00.08 37.121234 -116.079102 4,261 -679 Weapons Related Less than 20 kt 579

15:10:00.08 37.119849 -116.077439 4,254 -649 Weapons Related Less than 20 kt 579

15:10:00.08 37.118828 -116.082599 4,264 -869 Weapons Related Less than 20 kt 579

11:25:00.04 37.028519 -116.023488 3,988 -1,018 Weapons Effects 10 kt 506

23:15:00.00 11.378000 162.212000 0 -150 Weapons Effects 8 kt 133

20:00:00.00 37.169792 -116.043312 4,299 -17 Weapons Effects 1.2 kt 22

18:05:00.00 11.679000 165.391500 0 7 Weapons Related 6.9 Mt 47

22:00:00.00 37.193818 -116.200738 6,751 -114 Safety Experiment 726 grams 119

20:00:00.00 37.049538 -116.030696 4,029 -484 Safety Experiment 2 tons 163

14:30:00.12 37.139091 -116.041715 4,225 -300 Safety Experiment Less than 20 kt 590

14:30:00.00 37.133265 -116.043183 4,208 -640 Weapons Related Less than 20 kt 567

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

170

1 Trinity 07/16/1945 LANL near Alamogordo, 

New Mexico - - - - Tower

376 Trogon 07/24/1964 LANL NNSS U3dj Shaft

658 Truchas-Chacon 10/28/1970 LANL NNSS U3hn Shaft

658 Truchas-Chamisal 10/28/1970 LANL NNSS U3ho Shaft

658 Truchas-Rodarte  10/28/1970 LANL NNSS U3hm Shaft

250 Truckee 06/09/1962 LLNL Christmas Island area - - - - Airdrop

758 Trumbull 09/26/1974 LLNL NNSS U4aa Shaft

550 Tub-A  06/06/1968 LLNL NNSS U10aj C Shaft

550 Tub-B  06/06/1968 LLNL NNSS U10aj B Shaft

550 Tub-C 06/06/1968 LLNL NNSS U10aj F Shaft

550 Tub-D 06/06/1968 LLNL NNSS U10aj D Shaft

550 Tub-F 06/06/1968 LLNL NNSS U10aj A Shaft

1024 Tulia 05/26/1989 LANL NNSS U4s Shaft

714 Tuloso 12/12/1972 LANL NNSS U3gi Shaft

349 Tuna 12/20/1963 LANL NNSS U3de Shaft

624 Tun-A  12/10/1969 LLNL NNSS U10am #1 Shaft

624 Tun-B  12/10/1969 LLNL NNSS U10am #2 Shaft

624 Tun-C  12/10/1969 LLNL NNSS U10am #3 Shaft

624 Tun-D  12/10/1969 LLNL NNSS U10am #4 Shaft

363 Turf  04/24/1964 LLNL NNSS U10c Shaft

53 Turk 03/07/1955 LLNL NNSS Area 2 Tower

386 Turnstone 10/16/1964 LANL NNSS U3dt Shaft

921 Turquoise  04/14/1983 LANL NNSS U7bu Shaft

416 Tweed  05/21/1965 LLNL NNSS U9bn Shaft

773 Tybo 05/14/1975 LLNL NNSS U20y Shaft

579 Tyg-A  12/12/1968 LLNL NNSS U2dc #4 Shaft

579 Tyg-B  12/12/1968 LLNL NNSS U2dc #5 Shaft

579 Tyg-C  12/12/1968 LLNL NNSS U2dc #3 Shaft

579 Tyg-D  12/12/1968 LLNL NNSS U2dc #2 Shaft

579 Tyg-E  12/12/1968 LLNL NNSS U2dc #1 Shaft

579 Tyg-F  12/12/1968 LLNL NNSS U2dc #6 Shaft

506 Umber  06/29/1967 LANL NNSS U3em Shaft

133 Umbrella 06/09/1958 LANL/DoD Enewetak Atoll - - - - Underwater

22 Uncle 11/29/1951 LANL/DoD NNSS U10 Uncle Crater

47 Union 04/25/1954 LANL Bikini Atoll - - - - Barge

119 Uranus 03/14/1958 LLNL NNSS U12c.01 Tunnel

163 Valencia 09/26/1958 LANL NNSS U3r Shaft

590 Valise 03/18/1969 LLNL NNSS U9by Shaft

567 Vat  10/10/1968 LLNL NNSS U9cf Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
173

16:31:00.10 37.058025 -116.046198 4,062 -1,396 Weapons Related 20 to 150 kt 957

22:25:00.07 36.993607 -116.021912 3,948 -908 Weapons Related Less than 20 kt 722

01:00:00.00 37.193204 -116.201085 7,177 -100 Safety Experiment 1 gram 118

18:19:00.09 37.012995 -116.023615 3,970 -1,200 Weapons Related Less than 20 kt 875

18:14:00.10 37.085180 -116.053674 4,119 -1,149 Weapons Related Less than 20 kt 952

23:00:00.00 37.122600 -116.035400 4,226 0 Safety Experiment 24 tons 175

16:45:00.00 37.005372 -116.011008 3,956 -801 Weapons Related Less than 20 kt 1051

14:35:00.08 37.177285 -116.085633 4,506 -1,061 Weapons Related Less than 20 kt 885

15:00:00.13 37.169336 -116.049185 4,281 -307 Safety Experiment Less than 20 kt 479

17:30:00.09 37.088265 -116.084808 4,189 -955 Weapons Related Less than 20 kt 963

16:40:00.09 37.000056 -116.018245 3,952 -1,221 Weapons Related Less than 20 kt 953

15:00:00.04 37.053271 -116.030130 4,038 -1,490 Weapons Related 20 to 200 kt 585

13:30:00.08 37.165201 -116.045800 4,280 -317 Safety Experiment Less than 20 kt 507

17:13:00.07 37.155257 -116.073029 4,354 -1,057 Plowshare 25 kt 467

16:30:00.09 36.996362 -116.005332 3,946 -600 Weapons Related Less than 20 kt 1003

19:13:00.03 37.064465 -116.038050 4,060 -2,459 Weapons Related 20 to 200 kt 404

01:30:00.00 11.343500 162.174900 0 -500 Weapons Effects 9 kt 125

15:15:00.16 37.153864 -116.068579 4,333 -1,020 Weapons Related Less than 20 kt 735

18:30:00.00 11.684700 162.239850 0 7 Weapons Related 1.45 Mt 136

15:15:00.13 37.167476 -116.048002 4,278 -853 Weapons Related Less than 20 kt 488

14:10:00.00 37.156644 -116.048142 4,257 -1,534 Weapons Related Less than 20 kt 510

20:00:00.00 37.086535 -116.022735 4,195 762 Weapons Effects 1 kt 50

18:00:00.00 37.086535 -116.022735 4,194 739 Weapons Related 3 kt 58

14:00:00.04 37.046478 -116.030608 4,022 -386 Safety Experiment Less than 20 kt 565

14:21:30.34 37.034796 -116.016922 3,998 -781 Weapons Related Less than 20 kt 549

14:45:00.00 37.143840 -116.126129 4,604 -1,030 Weapons Related Less than 20 kt 949

12:45:00.00 37.134742 -116.041648 4,230 500 Weapons Related 197 tons 107

15:00:00.15 37.124812 -116.052860 4,201 -632 Weapons Related Low 244

22:00:00.06 37.025813 -116.032072 3,985 -646 Safety Experiment Less than 20 kt 1031

22:00:00.06 37.025813 -116.032072 3,985 -599 Safety Experiment Less than 20 kt 1031

12:30:00.00 37.138372 -116.118258 4,486 500 Weapons Related 19 kt 113

21:00:00.16 37.129666 -116.057353 4,239 -493 Weapons Related Low 273

20:00:00.00 28.733340 -126.266743 0 -2,000 Weapons Effects 30 kt 64

11:45:00.00 37.134742 -116.041648 4,230 500 Weapons Related 10 kt 90

15:00:00.04 37.009391 -116.043169 3,977 -789 Weapons Related Less than 20 kt 588

19:30:00.04 37.209080 -116.226276 7,514 -1,700 Weapons Related 20 to 200 kt 583

16:18:47.15 36.817963 -115.950093 3,086 -574 Weapons Effects Less than 20 kt 402

17:00:00.12 37.048734 -116.033427 4,027 -241 Weapons Related Low 284

16:00:00.14 37.118976 -116.025639 4,310 -709 Weapons Related Less than 20 kt 397

14:45:00.08 37.156291 -116.049466 4,251 -646 Weapons Related Less than 20 kt 521

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

172

957 Vaughn 03/15/1985 LANL NNSS U3lr Shaft

722 Velarde  04/25/1973 LANL NNSS U3jk Shaft

118 Venus 02/22/1958 LLNL NNSS U12d.01 Tunnel

875 Verdello  07/31/1980 LANL NNSS U3ku Shaft

952 Vermejo  10/02/1984 LANL NNSS U4r Shaft

175 Vesta 10/17/1958 LLNL NNSS S9e Surface

1051 Victoria 06/19/1992 LANL NNSS U3kv Shaft

885 Vide 04/30/1981 LLNL NNSS U8k Shaft

479 Vigil 11/22/1966 LLNL NNSS U10ad Shaft

963 Ville  06/12/1985 LLNL NNSS U4am Shaft

953 Villita  11/10/1984 LANL NNSS U3ld Shaft

585 Vise  01/30/1969 LANL NNSS U3ej Shaft

507 Vito 07/14/1967 LLNL NNSS U10ab Shaft

467 Vulcan  06/25/1966 LLNL NNSS U2bd Shaft

1003 Waco 12/01/1987 LANL NNSS U3lu Shaft

404 Wagtail 03/03/1965 LANL NNSS U3an Shaft

125 Wahoo 05/16/1958 LANL/DoD Enewetak Atoll - - - - Underwater

735 Waller 10/02/1973 LLNL NNSS U2bz Shaft

136 Walnut 06/14/1958 LANL Enewetak Atoll - - - - Barge

488 Ward  02/08/1967 LLNL NNSS U10x Shaft

510 Washer 08/10/1967 LLNL NNSS U10r Shaft

50 Wasp 02/18/1955 LANL NNSS Area 7 Airdrop

58 Wasp Prime 03/29/1955 LANL NNSS Area 7 Airdrop

565 Welder  10/03/1968 LANL NNSS U3fs Shaft

549 Wembley  06/05/1968 LANL NNSS U3ey Shaft

949 Wexford  08/30/1984 LLNL NNSS U2cr Shaft

107 Wheeler 09/06/1957 LLNL NNSS Area 9 Balloon

244 White  05/25/1962 LLNL NNSS U9b Shaft

1031 Whiteface-A 12/20/1989 LANL NNSS U3lp Shaft

1031 Whiteface-B 12/20/1989 LANL NNSS U3lp Shaft

113 Whitney 09/23/1957 LLNL NNSS Area 2 Tower

273 Wichita  07/27/1962 LLNL NNSS U9y Shaft

64 Wigwam 05/14/1955 LANL/DoD Pacific - - - - Underwater

90 Wilson 06/18/1957 LLNL NNSS Area 9 Balloon

588 Winch 02/04/1969 LANL NNSS U3gf Shaft

583 Wineskin  01/15/1969 LLNL NNSS U12r Shaft

402 Wishbone  02/18/1965 LLNL/DoD NNSS U5a Shaft

284 Wolverine 10/12/1962 LANL NNSS U3av Shaft

397 Wool  01/14/1965 LLNL NNSS U9bh Shaft

521 Worth 10/25/1967 LLNL NNSS U10ag Shaft

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
175

16:50:00.00 36.797923 -115.929776 3,077 1,500 Weapons Related 115 tons 179

18:17:00.00 11.665300 162.234000 0 200 Weapons Related 37 kt 4

18:10:00.00 11.679000 165.391500 0 7 Weapons Related 13.5 Mt 48

15:30:00.04 37.113755 -116.066669 4,214 -1,193 Weapons Related 20 to 200 kt 635

15:30:00.04 37.116315 -116.062313 4,214 -1,286 Weapons Related 20 to 200 kt 635

15:30:00.04 37.118002 -116.067318 4,227 -1,295 Weapons Related 20 to 200 kt 635

13:45:00.00 37.153110 -116.053654 4,257 -1,708 Weapons Related 20 to 200 kt 514

02:00:00.00 11.659775 162.223408 0 11 Weapons Related 330 kt 128

21:10:01.04 37.023210 -116.059499 4,031 -1,089 Weapons Related Less than 20 kt 690

16:01:00.00 1.380000 -157.195000 0 8,325 Weapons Related 3 Mt 251

18:09:00.00 11.619410 162.313825 0 200 Weapons Related 49 kt 5

15:00:00.15 37.118588 -116.040353 4,208 -743 Weapons Related Low 274

17:00:00.12 37.196527 -116.210043 7,438 -796 Weapons Related 3.1 kt 326

02:40:00.00 12.616667 163.016667 0 86,000 Weapons Effects 1.7 kt 120

18:01:00.00 1.565000 -157.365000 0 2,880 Weapons Related 100 kt 234

19:56:00.00 11.618730 162.314125 10 205 Weapons Related 190 tons 72

17:00:00.04 37.098718 -116.054096 4,158 -2,188 Weapons Related 20 to 200 kt 517

18:04:00.00 11.551450 162.348100 10 200 Weapons Related 18 kt 6

14:10:00.16 37.120509 -116.088767 4,279 -1,059 Weapons Related Less than 20 kt 700

12:00:00.00 37.094780 -116.024575 4,245 500 Weapons Related 28 kt 63

17:56:00.00 11.503166 165.370537 9 0 Weapons Related 3.5 Mt 71

July 1945 through September 1992

Time

(GMT)

Latitude

(degrees)

Longitude

(degrees)

Surface

Elevation

(ft)

Height of Burst 

or Depth of 

Burial (ft)

Purpose Yield Range Test

174

179 Wrangell 10/22/1958 LLNL NNSS Area 5 Balloon

4 X-Ray 04/15/1948 LANL Enewetak Atoll - - - - Tower

48 Yankee 05/04/1954 LANL Bikini Atoll - - - - Barge

635 Yannigan-Blue  02/26/1970 LLNL NNSS U2ay #3 Shaft

635 Yannigan-Red  02/26/1970 LLNL NNSS U2ay #1 Shaft

635 Yannigan-White  02/26/1970 LLNL NNSS U2ay #2 Shaft

514 Yard  09/07/1967 LLNL NNSS U10af Shaft

128 Yellowwood 05/26/1958 LANL Enewetak Atoll - - - - Barge

690 Yerba  12/14/1971 LANL NNSS U1c Shaft

251 Yeso 06/10/1962 LANL Christmas Island area - - - - Airdrop

5 Yoke 05/01/1948 LANL Enewetak Atoll - - - - Tower

274 York  08/24/1962 LLNL NNSS U9z Shaft

326 Yuba 06/05/1963 LLNL NNSS U12b.10 Tunnel

120 Yucca 04/28/1958 LANL/DoD Pacific - - - - Balloon

234 Yukon 05/08/1962 LLNL Christmas Island area - - - - Airdrop

72 Yuma 05/27/1956 LLNL Enewetak Atoll - - - - Tower

517 Zaza  09/27/1967 LANL NNSS U4c Shaft

6 Zebra 05/15/1948 LANL Enewetak Atoll - - - - Tower

700 Zinnia  05/17/1972 LLNL NNSS U2dk Shaft

63 Zucchini 05/15/1955 LANL NNSS Area 7 Tower

71 Zuni 05/27/1956 LLNL Bikini Atoll - - - - Surface

U.S. Nuclear Detonations - By Name

Test Detonation

Date

(mm/dd/yyyy)

(GMT)

Sponsor Location Hole Type
176

This page intentionally left blank.
References/Abbreviations and Acronyms/Glossary
177

References

Atomic Energy Commission, Energy Research and Development Administration, and U.S. Department of Energy. 

1971–1993. Completion Reports for Fiscal Years 1970 through 1992. Las Vegas, NV.

Berkhouse, L., S.E. Davis, F.R. Gladeck, J.H. Hallowell, C.B. Jones, E.J. Martin, F.W. McMullan, and M.J. Osborne. 1983. 

Operation GREENHOUSE 1951, DNA 6034F. 15 June. Washington, DC: Defense Nuclear Agency. 

Berkhouse, L., S.E. Davis, F.R. Gladeck, J.H. Hallowell, C.B. Jones, E.J. Martin, F.W. McMullan, and M.J. Osborne. 1984. 

Operation CROSSROADS 1946, DNA 6032F. 1 May. Washington, DC: Defense Nuclear Agency. 

Bruce-Henderson, S., F.R. Gladeck, J.H. Hallowell, E.J. Martin, F.W. McMullan, R.H. Miller, W.E. Rogers, R.H. Rowland, 

C.F. Shelton, P. Sturman, L. Berkhouse, S. Davis, H. DeSantis, P. Dean, M.K. Doyle, and D.S. Patterson. 1982. 

Operation REDWING 1956, DNA 6037F. 1 August. Washington, DC: Defense Nuclear Agency.

Defense Nuclear Agency. 1981. The Radiological Cleanup of Enewetak Atoll. Washington, DC. 

Defense Threat Reduction Agency. 2007. Operation PLUMBBOB, Fact Sheet. July. Fort Belvoir, VA. 

Defense Threat Reduction Agency. 2007. Operation SANDSTONE, Fact Sheet. July. Fort Belvoir, VA. 

Gladeck, F.R., J.H. Hallowell, E.J. Martin, F.W. McMullan, R.H. Miller, R. Pozega, W.E. Rogers, R.H. Rowland, C.F. Shelton, 

L. Berkhouse, S. Davis, M.K. Doyle, and C.B. Jones. 1982. Operation IVY 1952, DNA 6036F. 1 December. 

Washington, DC: Defense Nuclear Agency. 

Glasstone, S., and P.J. Dolan. 1977. The Effects of Nuclear Weapons, Third Edition. Washington, DC: U.S. Department of 

Defense and the Energy Research and Development Administration.

Harris, P.S., C. Lowery, A. Nelson, S. Obermiller, W.J. Ozeroff, and S.E. Weary. 1981. PLUMBBOB series 1957, DNA 

6005F. 15 September. Washington, DC: Defense Nuclear Agency. 

Jackson, R.E. 1993. Guide to U.S. Atmospheric Nuclear Weapon Effects Data, DASIAC SR-92-007; DNA1.940920.035. 

Prepared for the Defense Nuclear Agency. Santa Barbara, CA: Kaman Sciences Corporation.

Maag, C., S. Rohrer, and R. Shepanek. 1982. Operation RANGER Shots ABLE, BAKER, EASY, BAKER-2, FOX, 

25 January–6 February 1951, DNA 6022F. 26 February. Washington, DC: Defense Nuclear Agency. 

Martin, E.J., and R.H. Rowland. 1982. CASTLE series 1954, DNA 6035F. 1 April. Washington, DC: 

Defense Nuclear Agency. 

Massie, J., and I. Gravitis. 1982. Safety Experiments November 1955 - March 1958, DNA 6030F. 2 August. 

Washington, DC: Defense Nuclear Agency. 

National Imagery and Mapping Agency. 1997. Department of Defense World Geodetic System 1984, Its Definition and 

Relationships with Local Geodetic Systems, Third Edition, NIMA TR8350.2. Bethesda, MD.

National Imagery and Mapping Agency. 1997. Department of Defense World Geodetic System 1984, Part II, Table 7.1 - 

Parameters, Formula, and Graphics for the Practical Application of WGS 84, NIMA TR8350.2-B. Bethesda, MD.

Ponton, J., C. Maag, M. Wilkinson, and R. Shepanek. 1981. Operation TEAPOT 1955, DNA 6009F. 23 November. 

Washington, DC: Defense Nuclear Agency. 
178

Ponton, J., S. Rohrer, C. Maag, R. Shepanek, and J. Massie. 1982. Operation BUSTER-JANGLE 1951, DNA 6023F. 

21 June. Washington, DC: Defense Nuclear Agency. 

Ponton, J., S. Rohrer, C. Maag, R. Shepanek, and I. Gravitis. 1982. Operation HARDTACK II 1958, DNA 6026F. 

3 December. Washington, DC: Defense Nuclear Agency. 

Ponton, J., C. Maag, M.F. Barrett, and R. Shepanek. 1982. Operation TUMBLER-SNAPPER 1952, DNA 6019F. 

14 June. Washington, DC: Defense Nuclear Agency. 

Ponton, J., J. Massie, C. Maag, R. Shepanek, and S. Rohrer. 1982. Operation UPSHOT-KNOTHOLE 1953, DNA 6014F. 

11 January. Washington, DC: Defense Nuclear Agency. 

Schoengold, C.R., M.E. DeMarre, and E.M. Kirkwood. 1996. Radiological Effluents Released from U.S. Continental Tests 

1961 through 1992, DOE/NV-317 (Rev. 1), UC-702. August. Prepared for the U.S. Department of Energy, 

Nevada Operations Office. Las Vegas, NV: Bechtel Nevada. 

Springer, D.L., G.A. Pawloski, J.L. Ricca, R.F. Rohrer, and D.K. Smith. 2002. “Seismic Source Summary for All U.S. 

Below-Surface Nuclear Explosions.” In Bulletin of the Seismological Society of America, Vol. 92(5): pp. 1806–1840.

U.S. Arms Control and Disarmament Agency and U.S. On-Site Inspection Agency. 1990. Texts of Treaties and

Protocols: Treaty Between the United States of America and the Union of Soviet Socialist Republics on

the Limitation of Underground Nuclear Weapon Tests and the Treaty Between the United States of

America and the Union of Soviet Socialist Republics on Underground Nuclear Explosions for Peaceful

Purposes. Washington, DC.

U.S. Department of Energy. 2002. Restricted Data Declassification Decisions - 1946 to the Present, RDD-8. 

Washington DC: Office of Health, Safety, and Security; and Office of Classification. 

U.S. Geological Survey. 1975. “Amchitka Island Quadrangle Map.” In The Environment of Amchitka Island, Alaska (1977). 

M.L. Merritt and R.G. Fuller eds. Washington, DC: Energy Research and Development Administration. 

Weary, S.E., W.J. Ozeroff, J.L. Sperling, B. Collins, C.W. Lowery, and S.K. Obermiller. 1981. Operation WIGWAM, 

DNA 6000F. 1 September. Washington, DC: Defense Nuclear Agency. 
179

Abbreviations and Acronyms

AEC Atomic Energy Commission

AFSWP Armed Forces Special Weapons Project

ASROC Antisubmarine Rocket

CY Calendar Year

DASA Defense Atomic Support Agency

DNA Defense Nuclear Agency

DoD U.S. Department of Defense

DOE U.S. Department of Energy

DOE/NV U.S. Department of Energy, Nevada Operations Office

DSWA Defense Special Weapons Agency

DTRA Defense Threat Reduction Agency

ERDA Energy Research and Development Administration

ESS Effects SubSurface 

ft foot

GMT Greenwich Mean Time

HA High Altitude

JVE Joint Verification Experiment

kt kiloton

LANL Los Alamos National Laboratory

LASL Los Alamos Scientific Laboratory

LLL Lawrence Livermore Laboratory

LLNL Lawrence Livermore National Laboratory

LRL Lawrence Radiation Laboratory

MET Military Effects Tests

mm millimeter

Mt megaton

NAFR Nellis Air Force Range

NNSS Nevada National Security Site
180

NTS Nevada Test Site

NTTR Nevada Test and Training Range

RL Radiation Laboratory

TNT trinitrotoluene

UK United Kingdom

US/U.S. United States
181

Glossary

Airburst A type of atmospheric test in which the explosion of a nuclear weapon occurred at 

such a height that the expanding fireball did not touch the earth’s surface before the 

fireball reached its maximum luminosity. The airburst reported in this document 

(Grable, test #42) resulted from the detonation of an MK9 device fired from a 

280mm gun.

Airdrop A type of atmospheric test in which a nuclear device was dropped from an aircraft and 

exploded in the atmosphere.

Atmospheric A test conducted above ground or above water (i.e., in the open air).

Balloon A type of atmospheric test in which a nuclear device was suspended from a balloon 

and exploded in the atmosphere.

Barge A type of atmospheric test in which a nuclear device exploded on a barge moored in 

the lagoon at Enewetak Atoll or Bikini Atoll.

Cementback Operation whereby the drill hole was sealed with a plug and cemented to the surface.

Controlled release A planned, filtered release frequently performed to reduce airborne radiation levels in 

the working environment.

Crater A type of underground test in which a surface depression was formed by the detonation 

of a nuclear device placed shallow enough underground to produce a throw-out of 

earth when exploded. (Also see subsidence crater.)

Detonation A single nuclear device explosion; one or more comprised a test.

Drillback Directional drilling operation, performed after test activities were ceased, to sample 

fission product materials in the test cavity. While nearly all later tests had directional 

drilling, some early tests had vertical sample drilling from the crater floor.

Gas sampling Operation, usually performed after test activities were ceased, to determine levels of 

noble gases present. Some prompt gas-sampling activities were conducted very soon 

after the detonation (mostly LLNL sampling). 

Hole The location of a nuclear weapon test/detonation conducted at the NNSS. The 

uppercase alpha designator refers to the type of location (i.e., S = surface, 

U = underground). The numeric designator refers to the geographical area of the 

NNSS. The remaining letters generally were sequential but could also represent 

subareas (e.g., U10ca, U10cb). In the case of most atmospheric tests, only the 

geographical area of the NNSS is given.

Joint US-UK A nuclear test conducted jointly by the United States and the United Kingdom under a 

cooperative agreement that has remained in effect between the two countries since 

August 4, 1958.
182

Kiloton The energy of a nuclear explosion that is equivalent to the explosive power of 

1,000 tons of TNT.

Megaton The energy of a nuclear explosion that is equivalent to the explosive power of 1 million 

tons of TNT.

Mudpit release A breach of a pit used to contain radioactively contaminated mud generated from 

post-shot drillback operations.

Nellis Air Force Range Former name of the Nevada Test and Training Range.

Nevada National Security Site An area of land established as the Atomic Energy Commission’s on-continent proving 

ground in 1950. The NNSS is located 65 miles northwest of Las Vegas in Nye County 

and covers an area of approximately 1,360 square miles.

Nevada Test and Training Range An area of land that surrounds the east, north, and most of the west boundary of 

the NNSS. The NTTR is controlled by the U.S. Air Force and covers more than 

4,500 square miles. 

Nevada Test Site Former name of the Nevada National Security Site.

Offsite Any place outside the Test Range Complex or an area withdrawn/secured for a nuclear 

test within the continental boundaries of the United States.

Onsite A notation that radioactivity was detected onsite only is made for any test from which 

there was a release of radioactivity into the atmosphere that was not detectable beyond 

the boundaries of the Test Range Complex or Offsite location.

Plowshare A test in the Plowshare Program intended to explore the application of nuclear 

explosives to peaceful uses. Potential uses included excavating (various applications), 

producing isotopes, and fracturing tight geologic formations (enhanced oil and 

gas extraction).

Retarc Sulky, test #396, was intended to form a throw-out crater, but at the depth of burial 

used, the stronger-than-expected rock medium confined the explosive energy of the 

detonation so that only a mound of broken rock was formed. This was dubbed a “retarc” 

(“crater” spelled backward).

Rocket A type of atmospheric test in which a nuclear device was launched by rocket and 

exploded in the atmosphere.

Roman Candle A test conducted underground in an unstemmed hole to minimize, but not eliminate, 

the release of radioactivity to the atmosphere. Because radiation-induced 

fluorescence was seen as a beam of light, this was sometimes referred to as a 

“Roman candle” effect.

Safety Experiment An experiment designed to confirm that a nuclear explosion would not occur in case of 

an accidental detonation of the chemical explosive associated with the device.
183

Seismic Calibration A test conducted to evaluate seismic effects of an underground explosion.

Shaft A type of underground test in which a nuclear device exploded at the bottom of a drilled 

or mined vertical hole. Some safety tests were set off at the bottom of unstemmed 

drilled holes.

Simultaneous Two or more underground nuclear explosions (detonations) conducted within an area 

delineated by a circle having a diameter of 2 kilometers (1.24 miles) and conducted 

within a total period of time that did not exceed 0.1 second. 

Site The land area withdrawn for U.S. government testing purposes (e.g., NNSS, 

NTTR, Project Shoal) or the area secured to ensure no inadvertent public intrusion 

(e.g., Amchitka Island and Rulison test vicinity). Almost all nuclear tests were 

conducted within an area withdrawn from public domain; however, this was not true for 

Amchitka and Rulison underground nuclear tests, where no formal land withdrawal 

was recorded.

Sponsor The organization(s) (i.e., national weapons laboratory or laboratories, the U.S. 

Department of Defense, and/or the United Kingdom) responsible for conducting a 

particular nuclear test/detonation.

Storage-Transportation Detonations of combinations of high explosives and nuclear materials designed to 

study distribution of nuclear materials following accidents in several transportation and 

storage configurations. There was no nuclear yield.

Subsidence crater A depression that may form at the ground surface following an underground 

detonation. At the end of the dynamic phase of cavity growth, a pressurized standing 

cavity is present. As the cavity pressure and temperature decrease, the roof of the 

cavity becomes unstable and falls into the cavity. The top of the so-called “chimney,” 

now formed above the cavity, continues to fall into the void. A phenomenon known as 

“bulking” results in the fallen material having decreased density from its normal state, 

hence increased volume. If the bulking fills the chimney, collapse stops without 

reaching the surface. Such a subsurface collapse can also be caused by the chimney's 

intercepting a high-strength geologic structure. When the chimney reached the 

surface, a subsidence crater was formed. The size of the subsidence crater depends 

on the yield of the device, the depth of emplacement, and the geological characteristics 

of the surrounding soil. 

A throw-out crater (see crater) is formed by a totally different mechanism than a 

subsidence crater 

Surface A type of atmospheric test in which a nuclear device was placed on or close to the 

earth's surface, but no more than 10 ft off the ground.

Surface elevation The vertical distance from mean sea level to a point on the earth’s surface; generally 

refers to the surface ground zero of a nuclear device test/detonation.

Test Defined in the Threshold Test Ban Treaty as either a single underground nuclear 

explosion conducted at a test site, or two or more underground nuclear explosions 

conducted within an area delineated by a circle having a diameter of 2 kilometers and 

conducted within a total period of time that did not exceed 0.1 second.
184

Test Range Complex An area that includes both the NNSS and the adjacent U.S. Air Force-controlled NTTR.

Thermonuclear device Commonly referred to as a “hydrogen bomb,” part of the explosion energy from this 

device resulted from the fusion of light nuclei such as those of hydrogen isotopes.

Ton The energy of a nuclear explosion that is equivalent to the explosive power of 1 ton 

of TNT. (The yield of a nuclear device is a measure of the amount of energy 

released when it explodes. It is stated in terms of the quantity of TNT that would 

produce the same amount of explosive energy.) By definition, 1 ton is equivalent to 

109

(E9) calories.

Tower A type of atmospheric test in which a nuclear device was mounted near the top of a 

steel or wooden tower and exploded in the atmosphere 10 ft or more above the ground.

Tunnel A type of underground test in which a nuclear device exploded within a horizontal 

drift mined into a mountain or mesa in a way that placed the burst point deep within 

the earth.

Underground A test in which a nuclear device exploded in a tunnel, or near the bottom of a drilled or 

mined hole or shaft. Some underground nuclear tests were not designed to contain all 

radioactivity (e.g., cratering tests or safety experiments).

Underwater A test in which a nuclear device was detonated underwater.

Vela Uniform A U.S. Department of Defense program designed to improve the capability to detect, 

identify, and locate underground nuclear explosions.

Verification Experiment A test on which the former Soviet Union exercised its right to verify under the terms of 

the Threshold Test Ban Treaty.

Weapons Effects A type of atmospheric test conducted to evaluate the civil or military effects of a nuclear 

detonation on various targets, such as military hardware.

Weapons Related A type of atmospheric test conducted for the purpose of testing a nuclear device 

intended for a specific type of weapon system.

Yield The total effective energy released in a nuclear explosion. It is usually expressed in 

terms of equivalent tonnage of TNT required to produce the same energy release in 

an explosion.
185

Index of Nuclear Test Series

Operation Anvil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Operation Aqueduct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Operation Arbor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Operation Argus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Operation Bedrock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Operation Bowline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Operation Buster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Operation Castle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Operation Charioteer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Operation Cornerstone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Operation Cresset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Operation Crossroads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Operation Crosstie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Operation Dominic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Operation Emery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Operation Fishbowl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Operation Flintlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Operation Fulcrum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Operation Fusileer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Operation Greenhouse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Operation Grenadier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Operation Grommet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Operation Guardian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Operation Hardtack I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Operation Hardtack II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Operation Ivy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Operation Jangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Operation Julin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Operation Latchkey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Operation Mandrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Operation Musketeer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Operation Newsreel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Operation Niblick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Operation Nougat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Operation Phalanx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Operation Plumbbob. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Operation Praetorian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
186

Operation Project 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Operation Project 58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Operation Project 58A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Operation Quicksilver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Operation Ranger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Operation Redwing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Operation Roller Coaster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Operation Sandstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Operation Sculpin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Operation Storax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Operation Sunbeam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Operation Teapot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Operation Tinderbox. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Operation Toggle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Operation Touchstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Operation Tumbler-Snapper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Operation Upshot-Knothole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Operation Whetstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Operation Wigwam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6