Operation Plowshare was the overall American term for the development of techniques to use nuclear explosives for peaceful construction purposes. It was coined in 1961.

Proposed uses included widening the Panama Canal, constructing a new waterway through Nicaragua or cutting paths through mountainous areas for highways.

It has never been applied, but it has been tested. These twenty-eight shots were conducted in conjunction with other, weapons-related, test series. These are annotated under the 'notes' column.

The name of the operation came from a bibilical verse in the Book of Isaiah about turning swords into plowshares.

The planned Chariot blast in Alaska was never carried out.

The individual tests were:

Plowshare Test Blasts
Test Name Date Location Yield Note

Gnome10 December 1961Carlsbad, New Mexico3 KilotonsNougat
Sedan6 July 1962Nevada Test Site104 KilotonsStorax
Anacostia27 November 1962Nevada Test Site'Low'Dominic I and II
Kaweah21 February 1963Nevada Test Site'Low'Dominic I and II
Tornillo11 October 1963Nevada Test Site'Low'Niblick
Klickitat20 February 1964Nevada Test Site24 KilotonsNiblick
Ace11 June 1964Nevada Test SiteLess than 20 KtNiblick
Dub30 June 1964Nevada Test SiteLess than 20 KtNiblick
Par9 October 1964Nevada Test Site38 KilotonsWhetstone
Handcar5 November 1964Nevada Test SiteLess than 20 KtWhetstone
Sulky5 November 1964Nevada Test Site0.9 KilotonsWhetstone
Palanquin14 April 1965Nevada Test Site4.3 KilotonsWhetstone
Templar24 March 1966Nevada Test SiteLess than 20 KtFlintlock
Vulcan25 June 1966Nevada Test Site25 KilotonsFlintlock
Saxon11 July 1966Nevada Test SiteLess than 20 KtLatchkey
Simms6 November 1966Nevada Test SiteLess than 20 KtLatchkey
Switch22 June 1967Nevada Test SiteLess than 20 KtLatchkey
Marvel21 September 1967Nevada Test Site2.2 KilotonsCrosstie
Gasbuggy10 December 1967Farmington, New Mexico29 KilotonsCrosstie
Cabriolet26 January 1968Nevada Test Site2.3 KilotonsCrosstie
Buggy12 March 1968Nevada Test Site5.4 KilotonsCrosstie
Stoddard17 September 1968Nevada Test SiteAbout 13 KilotonsBowline
Schooner8 December 1968Nevada Test Site30 KilotonsBowline
Rulison10 September 1968Grand Valley, Colorado47 KilotonsMandrel
Flask26 May 1970Nevada Test Site105 KilotonsMandrel
Miniata8 July 1971Nevada Test Site83 KilotonsGrommet
Rio Blanco17 May 1973Rifle, Colorado3@33 Kilotons eachToggle

External Link

A page on the Gnome test