Photos of the nuclear explosive ― described as “nine inches in diameter, fifteen feet long, with an explosive power of forty thousand tons of TNT” ― built by Los Alamos Scientific Laboratory for Project Rulison.
This was one of three experiments (the other two being “Gasbuggy” and “Wagon Wheel”) in which nuclear explosives were used to fracture tight sandstone formations, in order to stimulate the production of fossil fuels (gas). The technique never saw routine use, partly because concerns over the production of tritium by thermonuclear reactions led to the use of pure-fission devices, which cost more per unit energy (although the difference is not huge below 100 kt or so). Even so, opponents made much of a prediction that, if it were widely employed, tritium levels in groundwater in the Mountain West might ultimately rise to three per cent of permissible levels for drinking water.
On the other hand, in the USSR, six nuclear explosives were used to put out five oil- and gas-well fires in the late 1960s and early 1970s. Hence, the total number of nuclear explosives used operationally for peacetime industrial purposes is at least three times that used in war.
See the complete film here.
The film-to-video transfer cost me $120.91, which was defrayed by a supporter. I have a number of additional reels awaiting transfer, and contributions in aid of that are much appreciated.












