Normally I wouldn't charge for public domain footage, but this is a huge file taking up space i could use for something else. This is 12 hours of raw footage of Operation Crossroads 1946, and contains footage not seen in the other documentary films. This footage is silent.

This is the Commander's report for Operation Redwing. The commander's report films were used to brief Congress and various executive branch agencies with an overview of the test series. This film is in B&W.

Part 2 of a 4 part series of films of Operation Hardtack. Prior to Operation Hardtack, the highest nuclear test had been conducted at 36,000 feet at the Nevada Test Site. Since the development of ICBMs as a delivery method for nuclear weapons had been developed, the use of nuclear warheads to intercept and destroy incoming ICBM warheads was being considered as a defense. Since the effects of high altitude detonations and possible kill mechanisms were unknown, the high altitude tests of Operation Hardtack were planned to gather data on nuclear detonations at altitude. One interesting thing about this film, is that test data was gathered on X-ray induced mechanical shock. The fact that electromagnetic radiation striking an object imparts a mechanical pressure on that object is known, but the effect is usually so slight that it's difficult to measure, and often ignored. For X-rays to do this is somewhat counterintuitive (X-rays tend to pass through most materials), and to actually cause mechanical stresses to the breaking point of an object, the X-ray flux must be almost unimaginably powerful. Some of this kinetic energy is probably a result of the X-rays being absorbed and causing thermal ablation of the material. Another interesting thing in this film is the changes in light emission characteristics as altitude increases. The "double pulse" of light from low altitude bursts is missing at higher altitudes, and bursts in between share characteristics of both.

This is the fourth film from Operation Hardtack. This film is silent, apparently everything said in the script remains classified. Two of the tests (Hamilton and Humboldt) were fired at the Nevada Test Site, and were tests of the Davy Crockett warhead. This appears to be primarily tests of the effectiveness of armored vehicles and various types of foxholes to protect troops from the effects of tactical nuclear weapons (such as the "Davy Crockett" battlefield warhead which had a yield between 10 and 20T). Since so much time in the film seems to concentrate on radiation effects, it seems that gamma rays, prompt neutrons, and local fallout are the most important effects near ground zero, rather than blast and heat. A film about the Davy Crockett launcher, and it's battlefield usage is being posted as part of the @coldwarrior nuclear test archive under the title "Davy Crockett Tactical Launcher 1962"