Jump to content Main menu Main menu move to sidebar hide Navigation Main page Contents Current events Random article About Wikipedia Contact us Donate Contribute Help Learn to edit Community portal Recent changes Upload file Languages Language links are at the top of the page across from the title. Search Search Create account Log in Personal tools Create account Log in Pages for logged out editors learn more Contributions Talk CentralNotice move to sidebar hide (Top) 1 Background Toggle Background subsection 1.1 Approaches to developing a weapon 1.2 Plutonium production 1.3 Heavy-water production 2 Operations to limit German access to heavy water Toggle Operations to limit German access to heavy water subsection 2.1 P...