‘¢ Foy dies, waybess TN ieee Rh 5. Because the DELETED required extensive cryo- genic (low-temperature) facilities for the special handling of liquid hydrogen, the AEC and the DOD had previously agreed that the first attempt at designing a deliverable thermonuclear weapon for emergency capability would be based on "dry" rather than "wet" (eryogenic) principles,. The design of such a deliverable weapon, BELETED avoids the cryogenic problems by incorporating deuterium in dry hydride form (lithium 6 deuteride)., The lithium 6 would abserb neutrons during the explosion and be converted to tritium, which would react with the deuterium to produce highenergy neutrons which would cause fission of natural ureniun. 6, The weapon, pounds. DELL. 2D wteLETED werhead is to be incorporated ina which may weigh es much as °59,000 In order to essure compatability of aircraft and weapen and to achieve early delivery capability, the Air Force is working closely with the A&C, 7. DELETED &8 a result of the fevoreble outcome of the experiment, DELvicy it aeppeers desirable to develop a "wat" tyre of ther- monuclear weapon in parallel with the "dry" type. f£ithoaugh eryo- eenic and lozistic aspects of a "wet" weapon pose sericus problers,