Project GNOME
Encyclopedia
Project Gnome was the first nuclear test of the Plowshare program
and was the first continental nuclear weapon test since Trinity to be conducted outside of the Nevada Test Site
. It was tested in southeastern New Mexico, approximately 40 km (25 mi) southeast of Carlsbad, New Mexico
.
and the Soviet Union
that lasted from November, 1958 until September, 1961 when the Soviet Union resumed nuclear testing
, thus ending the moratorium. The site selected for Gnome is located roughly 40 km (25 mi) southeast of Carlsbad, New Mexico
in an area of salt and potash
mines along with oil and gas wells.
Unlike most nuclear tests which were focused on weapon development, Shot Gnome was designed to focus on scientific experiments:
It was learned during the 1957 Plumbbob-Rainier
tests that an underground nuclear detonation created large quantities of heat as well as radioisotopes but most would quickly become trapped in the molten rock and unusable as the rock resolidifed. For this reason, it was decided that Gnome would be detonated inside a bedded rock salt dome. The plan was to then pipe water through the molten salt and use the steam generated to produce electricity. The hardened salt could be subsequently dissolved in water in order to extract the radioisotopes. Gnome was considered extremely important to the future of nuclear science because it could show that nuclear weapons might be used in peaceful applications. The Atomic Energy Commission invited representatives from various nations, the U.N., the media, interested scientists and some Carlsbad residents.
While Gnome is considered the first test of the Plowshare program, it was also part of the Vela program, which was established in order to improve the ability of the United States to detect underground and high altitude nuclear detonations. Vela Uniform was the phase of the program concerned with underground testing. Everything from seismic signals, radiation, ground wave patterns, electromagnetic pulse, and acoustic measurements were studied at Gnome under Vela Uniform
.
The Gnome detonation created a cavity 20 m (66 ft) wide and 50 m (164 ft) high with a floor of melted rock and salt which trapped most of the radiation. A new shaft was drilled near the original and on 17 May 1962, crews entered the Gnome Cavity. Even though almost six months had passed since the detonation, the temperature inside the cavity was still around 140° Fahrenheit (60° Celsius). Inside, they found stalactites made of melted salt as well as the walls of the cavity covered in salt. The intense radiation of the detonation colored the salt multiple shades of blue, green, and violet.
Today, all that exists to show what occurred at Gnome is a small concrete monument with two weathered and slightly vandalized plaques.
Operation Plowshare
Project Plowshare was the overall United States term for the development of techniques to use nuclear explosives for peaceful construction purposes...
and was the first continental nuclear weapon test since Trinity to be conducted outside of the Nevada Test Site
Nevada Test Site
The Nevada National Security Site , previously the Nevada Test Site , is a United States Department of Energy reservation located in southeastern Nye County, Nevada, about northwest of the city of Las Vegas...
. It was tested in southeastern New Mexico, approximately 40 km (25 mi) southeast of Carlsbad, New Mexico
Carlsbad, New Mexico
Carlsbad is a city in and the county seat of Eddy County, New Mexico, in the United States. As of the 2010 census, the city population was 26,138. Carlsbad is the center of the designated micropolitan area of Carlsbad-Artesia, which has a total population of 55,435...
.
Background
First announced in 1958, Gnome was delayed by the testing moratorium between the United StatesUnited States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
and the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....
that lasted from November, 1958 until September, 1961 when the Soviet Union resumed nuclear testing
Tsar Bomba
Tsar Bomba is the nickname for the AN602 hydrogen bomb, the most powerful nuclear weapon ever detonated. It was also referred to as Kuz'kina Mat , in this usage meaning "something that has not been seen before"....
, thus ending the moratorium. The site selected for Gnome is located roughly 40 km (25 mi) southeast of Carlsbad, New Mexico
Carlsbad, New Mexico
Carlsbad is a city in and the county seat of Eddy County, New Mexico, in the United States. As of the 2010 census, the city population was 26,138. Carlsbad is the center of the designated micropolitan area of Carlsbad-Artesia, which has a total population of 55,435...
in an area of salt and potash
Potash
Potash is the common name for various mined and manufactured salts that contain potassium in water-soluble form. In some rare cases, potash can be formed with traces of organic materials such as plant remains, and this was the major historical source for it before the industrial era...
mines along with oil and gas wells.
Unlike most nuclear tests which were focused on weapon development, Shot Gnome was designed to focus on scientific experiments:
- "Study the possibility of converting the heat produced by a nuclear explosion into steam for the production of electric power."
- "Explore the feasibility of recovering radioisotopes for scientific and industrial applications."
- "Use the high flux of neutrons produced by the detonation for a variety of measurements that would contribute to the scientific knowledge in general and to the reactor development program in particular."
It was learned during the 1957 Plumbbob-Rainier
Operation Plumbbob
Operation Plumbbob was a series of nuclear tests conducted between May 28 and October 7, 1957, at the Nevada Test Site, following Operation Redwing, and preceding Operation Hardtack I...
tests that an underground nuclear detonation created large quantities of heat as well as radioisotopes but most would quickly become trapped in the molten rock and unusable as the rock resolidifed. For this reason, it was decided that Gnome would be detonated inside a bedded rock salt dome. The plan was to then pipe water through the molten salt and use the steam generated to produce electricity. The hardened salt could be subsequently dissolved in water in order to extract the radioisotopes. Gnome was considered extremely important to the future of nuclear science because it could show that nuclear weapons might be used in peaceful applications. The Atomic Energy Commission invited representatives from various nations, the U.N., the media, interested scientists and some Carlsbad residents.
While Gnome is considered the first test of the Plowshare program, it was also part of the Vela program, which was established in order to improve the ability of the United States to detect underground and high altitude nuclear detonations. Vela Uniform was the phase of the program concerned with underground testing. Everything from seismic signals, radiation, ground wave patterns, electromagnetic pulse, and acoustic measurements were studied at Gnome under Vela Uniform
Vela Uniform
Vela Uniform was an element of Project Vela conducted jointly by the United States Department of Energy and the Advanced Research Projects Agency...
.
Gnome shot and after-effects
Gnome was placed 361 m (1,184 ft) underground at the end of a 340 m (1,115 ft) tunnel that was supposed to be self-sealing upon detonation. Gnome was detonated on 10 December 1961 with a yield of 3.1 kilotons. Even though the Gnome shot was supposed to seal itself, the plan did not quite work. Two to three minutes after detonation, smoke and steam began to rise from the shaft. Although radiation was released and detected off site, it quickly decayed. The cavity volume was calculated to be 28,000 ±2,800 cubic meters has an average radius of 17.4m in the lower portion measured.The Gnome detonation created a cavity 20 m (66 ft) wide and 50 m (164 ft) high with a floor of melted rock and salt which trapped most of the radiation. A new shaft was drilled near the original and on 17 May 1962, crews entered the Gnome Cavity. Even though almost six months had passed since the detonation, the temperature inside the cavity was still around 140° Fahrenheit (60° Celsius). Inside, they found stalactites made of melted salt as well as the walls of the cavity covered in salt. The intense radiation of the detonation colored the salt multiple shades of blue, green, and violet.
Today, all that exists to show what occurred at Gnome is a small concrete monument with two weathered and slightly vandalized plaques.
External links
- DOE: Project Gnome
- http://www.wipp.energy.gov/science/ug_lab/gnome/gnome.htm
- http://www.atomictourist.com/gnome.htm