Nuclear land mine

Atomic demolition munitions (ADMs), colloquially known as nuclear land mines, are small nuclear explosive devices. ADMs were developed for both military and civilian purposes. As weapons, they were designed to be exploded in the forward battle area, in order to block or channel enemy forces. Non-militarily, they were designed for demolition, mining or earthmoving. However, apart from testing, they have never been used for either purpose.

Instead of being delivered to the target by missiles, rockets, or artillery shells, ADMs were intended to be emplaced by soldiers. Due to their relatively small size and light weight, ADMs could be emplaced by military engineers or Special Forces teams, then detonated on command or by timer to create massive obstructions. By destroying key terrain features or choke points such as bridges, dams, mountain passes and tunnels, ADMs could serve to create physical as well as radiological obstacles to the movement of enemy forces and thus channel them into prepared killing zones.

According to official accounts, the United States deployed ADMs overseas in Italy and West Germany (Fulda Gap) during the Cold War. The most modern types (SADM and MADM) were deployed in South Korea.Seymour Hersh referred to the deployment of ADMs along the Golan Heights by Israel in the early 1980s.

ADMs have never been used commercially although similar small devices, often modified to cut down on fission yield and maximize fusion, have been deeply buried to put out gas well fires as part of the Soviet test program.

The Soviet Union tested the use of nuclear devices for mining and natural gas extraction (stimulating gas flow in a similar manner to fracking) on several occasions starting in the mid-1960s, as part of the Nuclear Explosions for the National Economy program. Tests for similar purposes were carried out in the United States under Operation Plowshare, but due to radioactive contamination caused by the tests, no direct commercial use was made of the technology although they were successful at nucleosynthesis and probing the composition of the Earth's deep crust by Vibroseis which has helped mining company prospecting.

...
Wikipedia