The Nuclear Technology Portal

Introduction

This symbol of radioactivity is internationally recognized.

General images - load new batch

The following are images from various nuclear technology-related articles on Wikipedia.

Selected article - show another

K-25 was the codename given by the Manhattan Project to the program to produce enriched uranium for atomic bombs using the gaseous diffusion method. Originally the codename for the product, over time it came to refer to the project, the production facility located at the Clinton Engineer Works in Oak Ridge, Tennessee, the main gaseous diffusion building, and ultimately the site. When it was built in 1944, the four-story K-25 gaseous diffusion plant was the world's largest building, comprising over 5,264,000 square feet (489,000 m2) of floor space and a volume of 97,500,000 cubic feet (2,760,000 m3).

Construction of the K-25 facility was undertaken by J. A. Jones Construction. At the height of construction, over 25,000 workers were employed on the site. Gaseous diffusion was but one of three enrichment technologies used by the Manhattan Project. Slightly enriched product from the S-50 thermal diffusion plant was fed into the K-25 gaseous diffusion plant. Its product in turn was fed into the Y-12 electromagnetic plant. The enriched uranium was used in the Little Boy atomic bomb used in the atomic bombing of Hiroshima. In 1946, the K-25 gaseous diffusion plant became capable of producing highly enriched product.

After the war, four more gaseous diffusion plants named K-27, K-29, K-31 and K-33 were added to the site. The K-25 site was renamed the Oak Ridge Gaseous Diffusion Plant in 1955. Production of enriched uranium ended in 1964, and gaseous diffusion finally ceased on the site on 27 August 1985. The Oak Ridge Gaseous Diffusion Plant was renamed the Oak Ridge K-25 Site in 1989 and the East Tennessee Technology Park in 1996. Demolition of all five gaseous diffusion plants was completed in February 2017. (Full article...)

Selected picture - show another

Credit: Los Alamos National Laboratory
Krakatau subcritical experiment being lowered into the floor of the tunnel of the U1a Complex at the Nevada Test Site. The cables extending from the hole will carry data from the experiment to recording instruments.

Did you know?

Things you can do

Selected biography - show another

Stafford Leak Warren (July 19, 1896 July 26, 1981) was an American physician and radiologist who was a pioneer in the field of nuclear medicine and best known for his invention of the mammogram. Warren developed the technique of producing stereoscopic images of the breast with X-rays while working in the Department of Radiology at the University of Rochester School of Medicine.

Warren was commissioned as a colonel in the United States Army Medical Corps in 1943 and appointed Chief of the Medical Section of the Manhattan Engineering District. He was responsible for the health and safety of the thousands of personnel involved in the Manhattan Project. He was present at the Trinity nuclear test in Alamogordo, New Mexico, where he was responsible for the safety aspects of the detonation of the world's first nuclear weapon. He led a survey team from the Manhattan Project to assess the effects of the atomic bombings of Hiroshima and Nagasaki. In 1946 he was Chief of the Radiological Safety Section of the Joint Task Force for Operation Crossroads, the nuclear test at Bikini Atoll.

In 1947 Warren became the first dean of the School of Medicine at the University of California, Los Angeles (UCLA). Under his leadership, the new school grew into a major medical school. Although controversial and opposed by James Bryant Conant, Warren would speak out about the dangers of nuclear fallout from weapons testing from about 1947 onwards and upon the Castle Bravo test in 1954 his views were lent some credence, which informed opinion leading up to the Partial Nuclear Test Ban Treaty. Warren became Vice Chancellor, Health Services in 1962 at UCLA. From 1963 to 1965 he served as special assistant to President John F. Kennedy and later Lyndon B. Johnson on mental retardation. Returning to UCLA in 1965, he became professor emeritus, a position he held until his death in 1981. In 1971, he was awarded the Enrico Fermi Award for his contributions to science and medicine. (Full article...)

Nuclear technology news


11 August 2026 – Syria and weapons of mass destruction
The Syrian transitional government confirms their cooperation with the International Atomic Energy Agency to purge nuclear materials at a hidden facility following a report by Axios on such plan after an agreement between Israel, Syria, and the United States. Conversely, Israel threatens to bombard the site again if the materials remain, and to prevent access to the site. (AA) (Axios) (The Jerusalem Post)
30 July 2026 – Nuclear power in Hungary
The Paks nuclear power plant in Hungary shuts down for the first time in 44 years amid a drought across the country and extremely low water levels on the Danube river. (BBC News) (DW)
22 July 2026 – Saudi Arabia–United States relations, Nuclear program of Saudi Arabia
Saudi Arabia and the United States sign a civil nuclear cooperation agreement allowing Saudi Arabia to use U.S. reactor technology, enrich uranium, and reprocess nuclear waste. The pact excludes the IAEA Additional Protocol and proceeds to U.S. congressional review. (AFP via France 24) (Reuters)

Subcategories

Associated Wikimedia

The following Wikimedia Foundation sister projects provide more on this subject:

  • Wikimedia Commons logo
    Commons
    Free media repository
  • Wikidata
    Free knowledge base
  • Wikiquote
    Collection of quotations
  • Wikisource logo
    Wikisource
    Free-content library
  • Wikiversity logo
    Wikiversity
    Free learning tools
  • Wiktionary logo
    Wiktionary
    Dictionary and thesaurus
Discover Wikipedia using portals
Purge server cache