In the 1950s people in the government were interested in using nukes in civil construction, to dig holes in the ground.
These Sedan trials infamously became the Sudan trials because of a typo during congressional hearings, apparently resulting in people to this very day still believing that we held secret bomb tests in the Sudan.
This has been another useless fact,
...backed up with useless images:
The Sedan crater in foreground, with comparison HE chemical explosives craters in the background.
For the full sized image, go to http://ix23.com/wp-content/uploads/2016/04/Sedan-Crater-002.jpg...
Sedan (1962) moved lots of dirt -- but the fallout killed sheep in several States...
TXnMA