KNOTHOLE, under the cognizance of the Department of Defense, will include a test of weapons effects and an operational test of the ‘artillery-fired atomic projectile (Mark 9). 12. The two operations will be run concurrently. Other Tests 13. Additional full-scale tests are tentatively planned as follows: a. Operation CASTLE (Pacific Proving Ground, late 1953 or early 1954). The purpose of this operation is to test several large yield thermonuclear devices, including one or more deliverable designs, Bikini Atoll has been approved 4s an auxiliary test location supplementing Eniwetok, and one or more of the tests in this series will probably te carried out there. be. Operation DOMINO (Nevada Froving Ground, spring of 1954 or fall of 1653, depending on CASTLE schedule). Tne purpose is to test new cevelornments in fission weapon field and components of thermonuclear weapons within the limits of the yields permissible in Nevada, ¢. Operation REDWING (Pacific Proving Ground, 1954 or 1955). Furpose: Thermonuclear weapons test, weapon Production and Stockpiling DOE ARCHIVES aA Weapons in Stockpile 14, In the stockpile now are the following anplosion-type bombs end nuclear components, with indicated interchangeable cores: Weepon Merk 4 Mark 5 Merk 6 Merk 7 2 aryet® choices cof yield for