[
___- Announced United States Nuclear Tests -- By Date
Event Name... .
| Date (GCT)
Location -
|. . Type
—
Lees
Purpose ...
.. .:-Yield Range ..
Operation Hardtack It -- Continued
Colfax
Unstemmed hole
Radioactivity not detected off site
10/05/58
NTS
Shaft
Safety Experiment
5.5 tons
Hidalgo
10/05/58
NTS
Balloon
Safety Experiment
77 tons
Tamalpais
Slight venting
10/08/58
NTS
Tunnel
WeaponsRelated
72 tons
Quay
10/10/58
NTS
Tower
WeaponsRelated
79 tons
Lea
10/13/58
NTS
Balloon
Weapons Related
1.4 kt
Neptune
Slight venting
10/14/58
NTS
Tunnel
Safety Experiment
115 tons
Hamilton
10/15/58
NTS
Tower
WeaponsRelated
1.2 tons
Logan
No radioactive release detected
10/16/58
NTS
Tunnel
WeaponsRelated
5 kt
Dona Ana
10/16/58
NTS
Balloon
WeaponsRelated
37 tons
Vesta
40/17/58
NTS
Surface
Safety Experiment
24 tons
Rio Arriba
10/18/58
NTS
Tower
WeaponsRelated
90 tons
San Juan
Unstemmed hole
10/20/58
NTS
Shaft
Safety Experiment
Zero
Socorro
10/22/58
NTS
Balloon
WeaponsRelated
6 kt
Wrangell
10/22/58
NTS
Balloon
WeaponsRelated
115 tons
Rushmore
10/22/58
NTS
Balloon
WeaponsRelated
188 tons
Oberon
No radioactive release detected
10/22/58
NTS
Tower
Safety Experiment
Zero
Radioactivity not detected off site
Radioactivity not detected off site
Fired in surface structure
No radioactive release detected
.