underground operation
1Operation Plumbbob — Plumbbob Priscilla Information Country United States Test site Nevada Test Site Period April October 1957 …
2Underground coal gasification — (UCG) is an in situ gasification process carried out in non mined coal seams using injection and production wells drilled from the surface, which enables the coal to be converted into product gas. The process is flexible in operation and is… …
3Operation Cedar Falls — Part of the Vietnam War Operation Cedar Falls …
4Operation Wieniec — (Polish: Akcja Wieniec, lit. Operation Corona) was one of the large scale anti Nazi operations of the Armia Krajowa during the World War II that took place on the night from 7 to 8 October 1942. It targeted rail infrastructure near Warsaw.… …
5Operation Barbarossa — Part of the Eastern Front of World War II …
6Operation Wallacea — logo. Operation Wallacea (known as Opwall) is an organisation funded by tuition fees that runs a series of biological and conservation management research programmes operating in remote locations across the world. These expeditions are designed… …
7Operation Sundevil — was a 1990 nation wide United States Secret Service crackdown on illegal computer hacking activities. It involved raids in approximately fifteen different cities and resulted in three arrests and the confiscation of computers, the contents of… …
8Operation Bernhard — was the codename of a secret Nazi plan devised during the Second World War by the RSHA and the SS to destabilise the British economy by flooding the country with forged Bank of England £5, £10, £20, and £50 notes. It is the largest counterfeiting …
9Operation Crossbow (film) — Operation Crossbow Theatrical film poster by Frank McCarthy Directed by Michael Anderson …
10Operation Nougat — Nougat Gnome Crater Information Country  United States Test site …
