1968年圖勒空軍基地B-52墜毀事件

墜機現場的黑色冰面
1968年美國圖勒空軍基地B-52墜毀事件，是一起發生在1968年1月21日的飛機墜毀事件，事件中一架美國空軍的B-52轟炸機墜毀。這架B-52轟炸機攜帶了4顆氫彈，執行冷戰期間的鉻穹頂行動，在飛越北冰洋的巴芬灣時，因為機艙起火迫使機組人員在迫降前放棄飛機。6名機組人員成功脫險，但其中1名因為沒有彈射座椅，在試圖跳傘時死亡。飛機隨後墜入格陵蘭島西北部美軍圖勒空軍基地附近的北極星海灣，導致4顆氫彈頭破裂並擴散，產生大範圍的放射性汙染。
美國和丹麥啟動了一次集中清理和恢復工作，但其中一顆彈頭未被找到。事發後美國戰略空軍的鉻穹頂行動立即終止，這更加突出了此任務的安全和政治風險。隨後一系列的安全措施被加強，並研製出核武器上使用的更穩定的常規炸藥。
1995年，有報告揭發丹麥政府有意對格陵蘭的核武器事故保持緘默，這違反了1957年丹麥的無核區域政策。參與清理的工人因為核輻射產生相關疾病，一直在尋求賠償。2009年3月，時代雜誌認為這次事故是世界上最嚴重的一起核事故。

**相關條目**
 1961年B-52同溫層堡壘轟炸機空難

**參考資料**

**書籍**
year=1984
*year=2004
*access-date=2011-01-21- isbn=0-226-10859-7- isbn=1-85109-490-3- access-date=2011-01-21- isbn=0-19-927190-9- access-date=2011-01-21
*year=2002- publisher=Oxford University Press- isbn=0-415-36120-6- isbn=0-7099-1468-7
*publisher=Osprey Publishing
*year=1980- isbn=1-4259-8510-6
*isbn=0-7099-1951-4
*access-date=2011-01-21- year=1995- isbn=0-8157-7774-4
*year=2002

**期刊及報告**
 deadurl=yes- archivedate=2007-06-09- AEC Observers' Interim Report of Thule Accident, United States Atomic Energy Commission, 1968-02-26, Report, retrieved on 2008-11-13- archivedate=2009-03-27
*dead-url=yes- archivedate=2007-06-09- cite paper|author=Eriksson, Mats|title=On Weapons Plutonium in the Artic Environment|publisher=Lund University|date=April 2002|location=Risø National Laboratory, Roskilde, Denmark|accessdate=2008-11-15|url=http://www.risoe.dk/rispubl/NUK/nukpdf/ris-r-1321.pdf|format=PDF|deadurl=yes|archiveurl=https://web.archive.org/web/20081218233551/http://www.risoe.dk/rispubl/NUK/nukpdf/ris-r-1321.pdf|archivedate=2008-12-18- Juel, Knud; Gerda Engholm & Hans Storm,  Register study of mortality and cancer incidence among Thule workersdate=20120209044128 , 2005, National Institute of Public Health (Denmark) & Cancer Society (Denmark), Retrieved on 2009-03-30 (Danish)- doi=10.1136/jech.46.4.336- date=April 1991- date=May 2006- archivedate=2009-04-09- archivedate=2009-04-19
*dead-url=no-  Thule Status Report, 1968-09-10, United States Atomic Energy Commission, Report, Retrieved on 2008-11-18- dead-url=no

**網頁**
dead-url=no
*cite web|publisher=National Military Command Center via Nautilus.org|title=B-52 Crash|date=1968-01-24|accessdate=2009-04-12|location=Pentagon|url=http://www.nautilus.org/archives/library/security/foia/Denmark/State012368.PDF|deadurl=yes|archiveurl=https://web.archive.org/web/20081120103053/http://www.nautilus.org/archives/library/security/foia/denmark/State012368.pdf|archivedate=2008-11-20 
*archivedate=2011-07-25- cite news|url=http://cndyorks.gn.apc.org/yspace/articles/greenland3.htm|title=Greenlanders Wary of a New Role in U.S. Defenses|author=Brooke, James|publisher=New York Times|date=2000-09-18|accessdate=2008-11-11|deadurl=yes|archiveurl=https://web.archive.org/web/20090409005559/http://cndyorks.gn.apc.org/yspace/articles/greenland3.htm|archivedate=2009-04-09- dead-url=no- dead-url=no - cite web |title=Foreign Relations of the United States 1964–1968, Volume XII, Western Europe: Denmark |url=http://www.state.gov/r/pa/ho/frus/johnsonlb/xii/2199.htm |publisher=United States Department of State |accessdate=2008-11-12 |archive-url=https://web.archive.org/web/20090613125259/http://www.state.gov/r/pa/ho/frus/johnsonlb/xii/2199.htm |archive-date=2009-06-13 |dead-url=yes - dead-url=no - cite web|url=http://www.nautilus.org/archives/library/security/foia/DKhansen57.html|author=Hansen, H.C.|date=1957-11-16|accessdate=2009-03-20|title=Danish Prime Minister Gives Tacit Go-Ahead For U.S. Nuclear Weapons In Greenland|publisher= The Nautilius Institute|archiveurl=https://web.archive.org/web/20071106145717/http://www.nautilus.org/archives/library/security/foia/DKhansen57.html|archivedate=2007-11-06|deadurl=yes
*dead-url=no- deadurl=yes
*deadurl=yes- cite web|url=http://www.greenpeace.org/raw/content/international/press/reports/the-greenpeace-book-of-the-nuc.pdf|page=205|publisher=Greenpeace Books|author=May, John|title=The Greenpeace book of the nuclear age; The hidden history - the human cost|accessdate=2009-04-19|year=1989|archiveurl=https://www.webcitation.org/5gX4Pvpv6?url=http://www.greenpeace.org/raw/content/international/press/reports/the-greenpeace-book-of-the-nuc.pdf|archivedate=2009-05-05|deadurl=no- df=- cite news|publisher=BBC News|url=http://news.bbc.co.uk/2/hi/europe/6647421.stm|title=Denmark challenged over B52 crash|date=2007-05-11|accessdate=2008-11-18|author=Mulvey, Stephen|archive-date=2012-04-12|archive-url=https://web.archive.org/web/20120412042007/http://news.bbc.co.uk/2/hi/europe/6647421.stm|dead-url=no- archivedate=2011-07-19-  Petition 720/2002 by Jeffrey Carswelldate=20121009121509 , Committee on Petitions, European Parliament, 2004-  Petition 720/2002 by Jeffrey Carswelldate=20121009120430 , Committee on Petitions, European Parliament, 2007
*dead-url=no- cite web|url=http://www.gwu.edu/~nsarchiv/nukevault/ebb267/03.pdf|title=Project Crested Ice: The Thule Accident|date=1969-04-23|publisher=History & Research Division, Strategic Air Command (via National Security Archive)|accessdate=2009-03-19|archiveurl=https://www.webcitation.org/5gX4OJXVL?url=http://www.gwu.edu/~nsarchiv/nukevault/ebb267/03.pdf|archivedate=2009-05-05|deadurl=no
*accessdate=2011-01-21- Thule Nuclear Weapons Accident: Dose Evaluation Report, United States Air Force Medical Service, April 2001, Report, Retrieved on 2009-03-26- cite web|url=https://eed.llnl.gov/ans/2002/vantine/vantine_ans_2002.pdf|format=PDF|title=Relevance of Nuclear Weapons Clean-up Experience to Dirty Bomb Response|author=Vantine, Harry C & Thomas R. Crites|publisher=Lawrence Livermore National Laboratory|date=2003-03-26|deadurl=yes|archiveurl=https://web.archive.org/web/20090327090415/https://eed.llnl.gov/ans/2002/vantine/vantine_ans_2002.pdf|archivedate=2009-03-27|accessdate=2011-01-21

**拓展閱讀**
 isbn=8711150459 - cite book |url=http://books.google.com/?id=gi7HARO8vTcC |title=Broken Arrow - The Declassified History of U.S. Nuclear Weapons Accidents |author=James C. Oskins, Michael H. Maggelet |isbn=1-4357-0361-8|publisher=Lulu|year=2008

**外部鏈接**
 文件和照片 - DoD Mishaps by the Armed Forces Radiobiology Research Institute- Declassified US government video of clean-up operationdate=20201115095900  BBC- National Institute for Radiation Protection (Denmark)date=20130726150748  - Thulesundhed.dk website by Ministry of Health and Prevention (Denmark) and the Department of Family and Health (Greenland) covering the impact of plutonium in the Thule area on the health of the local population