80 years ago, on July 16, 1945, the world's first nuclear explosion «Trinity» was conducted by the United States.

Arco was the first city in the world ever to be lit by electricity generated solely by nuclear power. This occurred for about an hour on July 17, 1955, powered by Argonne National Laboratory’s BORAX-III reactor.

500 tons of TNT are detonated in Alberta, Canada on July 17, 1964 as part of Operation «Snowball» to simulate the effects of a nuclear explosion.

«Tewa» thermonuclear explosion, 5 Megatons, barge, Bikini Atoll, 5:46, 21 July 1956. The «Bassoon Prime» device was a «dirty» three stage design (87% fission). The crater left in the reef was 1220 m in diameter and 40 m deep.

The radar domes at RAF Fylingdales are re-painted by a Darlington firm. 1977.

«Huron» thermonuclear explosion, 250 kilotons, barge, Eniwetok Atoll, 6:12, 22 July 1956.

B-36 bomber flight engineer pulling himself on his back on a trolley as he travels hand-over-hand along rope fr. the plane's rear compartment to its nose. Photo by Margaret Bourke-White.

«Baker» underwater nuclear test, 23 kilotons, -27 m, Bikini Atoll lagoon, 25 July 1946. High quality and unusual angle.

USS Sam Rayburn nuclear submarine, Virginia, 1964. Note open tubes for Polaris missiles, with hatch covers colored and numbered in Billiard Ball style.

On August 5, 1963, the Limited Nuclear Test Ban Treaty was signed in Moscow by the United States, the Soviet Union, and the United Kingdom. This treaty prohibited all test detonations of nuclear weapons except for those conducted underground.

80 years ago, August 6, 1945, the US B-29 «Enola Gay» bomber dropped an atomic bomb on the Japanese city of Hiroshima that exploded at an altitude of 560 m with a yield of 15 kilotons. 70 000 people killed immediately and a total death toll of 166 000.

80 years ago, August 9, 1945, the US B-29 «Bockscar» bomber dropped an atomic bomb on the Japanese city of Nagasaki that exploded at an altitude of 503 m with a yield of 21 kilotons. About 75 000 people were killed.

Soviet nuclear test RDS-6s («Joe-4»), 400 kilotons, 37 m tower, Semipalatinsk test site. 12 August 1953. The detonation demonstrated the use of fusion in a weaponizable design.

The bow sonar sphere of a U.S. Navy Seawolf-class nuclear attack submarine during assembly or maintenance.

«Shasta» nuclear test, 17 kilotons, 150 m tower, Nevada Test Site, 4:00 a.m. 18 August 1957.

«Doppler» nuclear test, 11 kilotons, balloon 450 m, Nevada Test Site, 4:30 a.m. 23 August 1957.

On August 24, 1968, France tests its first hydrogen bomb at the Fangataufa Atoll. The device was suspended from a balloon. It was detonated with a 2.6 Megaton yield at an altitude of 540 m.

29 August 1949 the first Soviet atomic bomb was tested at the Semipalatinsk test site. The Soviet Union became the second nuclear-armed nation.

«Smoky» nuclear test, 44 kilotons, 210 m tower, Nevada Test Site, 5:30 a.m. 31 August 1957. A test of the boosted TX-41 warhead primary and secondary in a bomb mockup. 1150 soldiers participated in a military exercise.

«Newton» nuclear test, 12 kilotons, Nevada Test Site, 5:50 a.m. 16 September 1957. The XW-31 warhead was suspended by a balloon at an altitude of 457 m.