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A B-52 bomber carrying four nuclear weapons crashed onto sea ice near Thule Air Base, Greenland, causing localized radioactive contamination.
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Boeing B-52 Stratofortress
US Air Force strategic bomber (1955–present)
The Boeing B-52 Stratofortress is an American long-range subsonic jet-powered strategic bomber. The B-52 was designed and built by Boeing, which has continued to provide support and upgrades. It has been operated by the United States Air Force (USAF) since 1955 and was flown by…Source: Wikipedia (CC BY-SA)
1968 Thule Air Base B-52 crash
1968 aviation accident
On 21 January 1968, an aircraft accident, sometimes known as the Thule affair or Thule accident, involving a United States Air Force (USAF) B-52 bomber occurred near Thule Air Base in the Danish territory of Greenland. The aircraft was carrying four B28FI thermonuclear bombs on…Source: Wikipedia (CC BY-SA)
Sea ice
Outcome of seawater as it freezes
Sea ice arises as seawater freezes. Because ice is less dense than water, it floats on the ocean's surface. Sea ice covers about 7% of the Earth's surface and about 12% of the world's oceans. Much of the world's sea ice is enclosed within the polar ice packs in the Earth's polar…Source: Wikipedia (CC BY-SA)
Pituffik Space Base
US space base in Greenland
Pituffik Space Base, formerly Thule Air Base, is a United States Space Force base located on the northwest coast of Greenland in the Kingdom of Denmark under a defense agreement between Denmark and the United States. 150 United States guardians serve there, after the United…Source: Wikipedia (CC BY-SA)
Radioactive contamination
Undesirable radioactive elements on surfaces or in gases, liquids, or solids is a problem
Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids, or gases, where their presence is unintended or undesirable.Source: Wikipedia (CC BY-SA)