Permanent historical factsheet

Manhattan Project

United States of America · Science / Physics. Chronological records rendered directly from the World History Database.

13Records
1941–1945Date range
7Named people
4Places

Chronological records

1941

Vannevar Bush6 December 1941

Washington · Science / Physics

Vannevar Bush holds a meeting to organize an accelerated research project, managed by Arthur Compton, Harold Urey develops research into gaseous diffusion as uranium enrichment & Ernest Lawrence investigates separation methods

Ernest Lawrence6 December 1941

Washington · Science / Physics

Vannevar Bush holds a meeting to organize an accelerated research project, managed by Arthur Compton, Harold Urey develops research into gaseous diffusion as uranium enrichment & Ernest Lawrence investigates separation methods

1942

Robert OppenheimerMay 1942

Science / Physics

Oppenheimer is given the title "Coordinator of Rapid Rupture", specifically referring to the propagation of a fast neutron chain reaction in an atomic bomb

Robert OppenheimerJuly 1942

Science / Physics

Robert Oppenheimer convenes a summer conference at the University of California, Berkeley to discuss the design of a fission bomb, Edward Teller brings up the possibility of a hydrogen bomb as a major point of discussion

Enrico Fermi2 December 1942

Science / Physics

A team led by Enrico Fermi, for whom Fermilab is named, initiate the first artificial self-sustaining nuclear chain reaction in an experimental nuclear reactor named Chicago Pile-1

Enrico Fermi2 December 1942

Science / Physics

Leads a team which creates the 1st controlled nuclear reaction. Chicago Pile-1, the first nuclear reactor goes critical at the University of Chicago under the leadership and design of Enrico Fermi

1943

Robert Oppenheimer4 October 1943

Hanford · Science / Physics

Construction begins for the first reactor at the Hanford Site

Robert OppenheimerOctober 1943

Science / Physics

Project W-47, later called Project Alberta set up to plan delivery of the bomb

Julius Robert Oppenheimer1943

Los Alamos · Science / Physics

Appointed head of the Manhattan Project by Roosevelt to develop the atomic bomb

1944

Enrico FermiMay 1944

Los Alamos · Science / Physics

Fermi at Los Alamos tests the world's third reactor, LOPO, the first aqueous homogeneous reactor, and the first fueled by enriched uranium

1945

Robert Oppenheimer16 July 1945

Alamogordo · Science / Physics

The first nuclear explosion, the "Trinity" test of an implosion-style plutonium-based nuclear weapon known as "the gadget", near Alamogordo, New Mexico

Henry DeWolf Smyth12 August 1945

Science / Physics

The Smyth Report was the common name given to an administrative history written by physicist Henry DeWolf Smyth about the Allied World War II effort to develop the atomic bomb, the Manhattan Project

Norris Bradbury16 October 1945

Los Alamos · Science / Physics

Oppenheimer resigns as director of Los Alamos, and is succeeded by Norris Bradbury

Names involved

Enrico FermiErnest LawrenceHenry DeWolf SmythJulius Robert OppenheimerNorris BradburyRobert OppenheimerVannevar Bush

Provenance

This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.