History: Jumbo, a 200-ton steel canister designed to recover plutonium used in Trinity test in the event the explosives were unable to trigger a chain reaction. In the end, it wasn't used, but was placed near ground zero to help gauge the effects of the blast. It survived intact. 1945. [1200 × 789]

https://i.redd.it/fsl5sz0zul4z.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/6i6gc6/jumbo_a_200ton_steel_canister_designed_to_recover/?utm_source=ifttt