Trinity Atomic Test July 16, 1945



The effects could well be called unprecedented, magnificent, beautiful, stupendous and terrifying. No man-made phenomenon of such tremendous power had ever occurred before.

General Thomas Farrell, Deputy to Gen. Leslie Groves

I am become Death, the Destroyer of Worlds.

Dr. J. Robert Oppenheimer, Director of Los Alamos

Now we are all sons-of-bitches.

Dr. Kenneth Bainbridge, Director of Trinity Test


Memorandum for the Secretary of Way, July 18, 1945

This is Gen. Leslie Groves report to the Secretary of War about the Trinity Test (now declassified). It has more information than the following press release and includes observations by Gen. Thomas Farrell and an officer at the Alamogordo Air Base.

War Department Release on New Mexico Test, July 16, 1945

This press release gives a dramatic account of the events surrounding the Trinity Atomic Test. Statements from Gen. Leslie Groves and Gen. Thomas Farrell are included.

Project Trinity (180kb)

by Carl Maag and Steve Rohrer, Defense Nuclear Agency, DNA 6028F, 1982.
This document gives an overview of events at the Trinity Test and describes the radiological safety measures taken to protect the participants


Trinity Test Movie

Trinity Explosion in real time

This was filmed by Berlyn Brixner from the North Shelter at a distance of 10,000 yards.
(160 x 120 QuickTime, 1.4 MB)

Trinity Test Close Up Movie

Trinity Fireball in high-speed close-up

This is a 30 frame-per-second capture of the film shot from 10,000 yd. Step through it as single frames to see the development of the fireball until it begins to lift of the ground.
(160 x 120 QuickTime, 880 KB)

Photographs and Maps

The photos presented here are provided through the courtesy of the U.S. Army White Sands Missile Range Public Affairs Office and the Los Alamos National Laboratory.

Trinity Test Site Map

Detailed Map of Trinity Site in 1945

from Manhattan: The Army and the Atomic Bomb, by Vincent Jones. (132K)

Trinity Test Site Map

Trinity Site Base Camp

10 miles from Ground Zero. (206k)

Unloading Jumbo

Unloading Jumbo

Jumbo was built to contain a misfire. (187k)

MacDonald Ranch House (present day)

McDonald Ranch House

Where the plutonium core was assembled. (102k)

Lifting the Gadget

Lifting the Gadget

The Gadget was lifted onto the 100-foot tower. (222k)

The Gadget and Norris Bradbury

The Gadget

Norris Bradbury and the Gadget in the tower. (228k)

Trinity Explosion at 10 seconds

Trinity Explosion at 10 seconds

The atomic mushroom cloud. (147k)

Oppenheimer and Groves at Ground Zero

Crater at Ground Zero

Oppenheimer and Groves at Ground Zero in September, 1945. (203k)