1968 Thule Air Base B-52 Crash with 4 Hydrogen Bombs On Board

Background

On 21 January 1968, an aircraft 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 hydrogen bombs on a Cold War”Chrome Dome” alert mission over Baffin Bay when a cabin fire forced the crew to abandon the aircraft before they could carry out an emergency landing at Thule Air Base. Six crew members ejected safely, but one who did not have an ejection seat was killed while trying to bail out. The bomber crashed onto sea ice in North Star Bay, Greenland, causing the conventional explosives aboard to detonate and the nuclear payload to rupture and disperse, which resulted in radioactive contamination.

The United States and Denmark launched an intensive clean-up and recovery operation, but the secondary stage of one of the nuclear weapons could not be accounted for after the operation completed. USAF Strategic Air Command “Chrome Dome” operations were discontinued immediately after the accident, which highlighted the safety and political risks of the missions. Safety procedures were reviewed and more stable explosives were developed for use in nuclear weapons. (Description of event courtesy of Wikipedia)

Declassified Documents

Department of the Air Force

Central Intelligence Agency (CIA)

 CIA Documents on the 1968 B-52 Crash [247 Pages, 47MB]

Continue scrolling for more...

National Security Agency (NSA)

 NSA Documents on the 1968 B-52 Crash [21 Pages, 6.2MB]

 Full FOIA Case File for the above [40 Pages, 15MB]

Follow The Black Vault on Social Media:

This post was published on March 31, 2021 5:20 am

John Greenewald

Recent Posts

Unheard FBI Audio Reveals Art Bell Discussing Threats, Rumors, and Radio Rivalries

The FBI’s file on late-night radio host Art Bell has expanded with the release of…

October 6, 2025

“Looked Like Iron Man”: Tucson Pilot’s “Drone” Report and Audio Recording Revealed in FAA Records

On December 17, 2022, a Cessna 172 pilot approaching Tucson, Arizona, reported an unusual airborne…

October 2, 2025

FBI Releases LAX “Jetpack” Case Files; Pilot Interview Contradicts Jetpack Description

The FBI has released a detailed set of investigative files on the so-called “Jetpack Man”…

October 1, 2025

All Analysis and Records Withheld on DoD’s Own Released UAP Footage

The Department of Defense (DoD) has denied a Freedom of Information Act (FOIA) request seeking…

September 29, 2025

FOIA Appeal Adds New Dog Bite Details from Biden White House, Confirms Video Evidence Withheld

Newly obtained Secret Service records continue to shed light on the numerous biting incidents involving…

September 26, 2025

DoD Redacts Nearly All Records Explaining AARO’s Use of Law Enforcement Exemption for UAP Files

The Department of Defense (DoD) has released a set of heavily redacted emails in response…

September 25, 2025