{"slug": "nuclear-weapons-testing", "label": "Nuclear weapons testing", "wikipedia": "https://en.wikipedia.org/wiki/Nuclear_weapons_testing", "wikidata": "https://www.wikidata.org/wiki/Q210112", "qid": "Q210112", "description": "experiment carried out to determine the effectiveness, yield, and explosive capability of nuclear weapons", "entries": 9, "years": 7, "span": [1946, 1998], "span_label": ["1946 CE", "1998 CE"], "topics": [{"title": "Science & Discovery", "count": 3}, {"title": "Technology & Infrastructure", "count": 3}, {"title": "Conflict & Security", "count": 3}], "also_known_as": ["Nuclear testing"], "related": [{"slug": "soviet-union", "label": "Soviet Union", "shared": 1}, {"slug": "nevada", "label": "Nevada", "shared": 1}, {"slug": "marshall-islands", "label": "Marshall Islands", "shared": 1}], "items": [{"year": 1946, "year_label": "1946 CE", "section": "Science & Discovery", "date": "July 1", "text": "July 1 – Nuclear testing: Operation Crossroads, a series of nuclear weapon tests conducted by the United States at Bikini Atoll in Micronesia, is initiated by the detonation of Able at an altitude of 520 feet (158 m).", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1372058859#July", "title": "1946", "revid": 1372058859, "section": "Events › July"}}, {"year": 1946, "year_label": "1946 CE", "section": "Science & Discovery", "date": "July 25", "text": "July 25 – Nuclear testing: In the first underwater test of the atomic bomb, the surplus USS Saratoga is sunk near Bikini Atoll in the Pacific Ocean, when the United States detonates the Baker device during Operation Crossroads.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1372058859#July", "title": "1946", "revid": 1372058859, "section": "Events › July"}}, {"year": 1952, "year_label": "1952 CE", "section": "Technology & Infrastructure", "date": "November 1", "text": "November 1 – Nuclear testing and Operation Ivy: The United States successfully detonates the first hydrogen bomb, codenamed \"Mike\", at Eniwetok Atoll in the Marshall Islands in the central Pacific Ocean, with a yield of 10.4 megatons.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373187098#November–December", "title": "1952", "revid": 1373187098, "section": "Events › November–December"}}, {"year": 1953, "year_label": "1953 CE", "section": "Technology & Infrastructure", "date": "March 17", "text": "March 17 – The first nuclear test of Operation Upshot–Knothole is conducted in Nevada, with 1,620 spectators at 3.4 km.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1371310369#March", "title": "1953", "revid": 1371310369, "section": "Events › March"}}, {"year": 1953, "year_label": "1953 CE", "section": "Conflict & Security", "date": "May 25", "text": "May 25 – Nuclear testing: At the Nevada Test Site, the United States conducts its only nuclear artillery test: Upshot-Knothole Grable.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1371310369#May", "title": "1953", "revid": 1371310369, "section": "Events › May"}}, {"year": 1961, "year_label": "1961 CE", "section": "Conflict & Security", "date": "October 30", "text": "October 30 – Nuclear weapons testing: The Soviet Union detonates a 58-megaton yield hydrogen bomb known as Tsar Bomba, over Novaya Zemlya (it remains the largest ever man-made explosion).", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1372676854#October", "title": "1961", "revid": 1372676854, "section": "Events › October"}}, {"year": 1962, "year_label": "1962 CE", "section": "Science & Discovery", "date": "July 17", "text": "July 17 – Nuclear testing: The \"Small Boy\" test shot Little Feller I becomes the last atmospheric test detonation, at the Nevada Test Site.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373095518#July", "title": "1962", "revid": 1373095518, "section": "Events › July"}}, {"year": 1974, "year_label": "1974 CE", "section": "Technology & Infrastructure", "date": "May 18", "text": "May 18 – Nuclear weapons testing: Under Project Smiling Buddha, India successfully detonates its first nuclear weapon, becoming the 6th nation to do so.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1372602919#May–June", "title": "1974", "revid": 1372602919, "section": "Events › May–June"}}, {"year": 1998, "year_label": "1998 CE", "section": "Conflict & Security", "date": "May 28", "text": "May 28 – Nuclear testing: In response to a series of Indian nuclear tests, Pakistan explodes five nuclear devices of its own in the Chagai hills of Baluchistan, codenamed Chagai-I, prompting the United States, Japan and other nations to impose economic sanctions. Pakistan celebrates Youm-e-Takbir annually.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373236679#May", "title": "1998", "revid": 1373236679, "section": "Events › May"}}]}