U.S 5 megatons Hydrogen bomb underground nuclear test 1971

The Cannikin underground nuclear test was a nuclear detonation conducted by the United States in 1971. It was conducted on Amchitka Island, Alaska, and was the largest underground nuclear test ever conducted by the United States. The purpose of the Cannikin test was to explore the feasibility of using underground nuclear explosions as a means of peaceful resource development, specifically as a means of accessing natural gas reserves in deep geological formations. The test was conducted using a 5-megaton nuclear device and was designed to create a large underground cavity that could be used to store natural gas. The test was controversial due to concerns about its potential environmental impact, particularly the risk of radioactive contamination of the surrounding area. The test also raised concerns about the impact of underground nuclear testing on the stability of the earth's crust and the potential for triggering earthquakes or other geological events. Despite these concerns, the Ca