Operation Upshot-Knothole GRABLE, 1953

1953 20th century afap america artillery fired atomic projectile atom bomb blast cannon test cannon codename grable detonation explode famous gun type fission weapon history of science history m65 atomic cannon m65 may 25 may 25th nevada test site nevada nts nuclear artillery shell nuclear bomb operation upshot knothole grable operation upshot knothole research and development science history site technology upshot knothole grable upshot knothole usa warfare weapon wmd