Se mete ar e Te 7 es etait ee te - ei Paes Seer a ay awa ine er a ade 15 RIDOMEED¢BY‘APSRP LETTER OF 10 Warch 1952 ytWy : we i.e , “ teSis ‘hos : cae | , a : \. . - . Comments: radiation at relatively close distances. ist and clouds will attemate - ~~ radiation but it is important to know the degree of this attermation MS, The Department of the Air Force is investigating the feasibility of expanding Program 6.11 to provide for the measurement of thermal under these conditions.. If the measurements indicate that the phenomena of dust obscuration and clouds attenuate thermal radiation sufficiently to allow a manned-aircraft to deliver the weappn, delivery techniques may have to be predicated on the use of a surface burst weapon. If the thermal radiation is too great when the above conditions prevail to allow manned-aircraft delivery, then it is important that this fact be known so that other delivery techniques may be established. ~ 1h ss * . a3 “le? oe - tet "sy ” . pt1 at . ae | pate. £3 OCT 1962 ewrensn oe eo 0 0 0’e Ceweler a's Decasemied WHS CONFIRMED TO BE “UNCLASSIFIED AUTHORITY: - BY H.R. ame Brian y DOE/SA-20 _ it oh DATE: OO MAAa9 | DY. OY... .. VOTE? ipprors)A(aerete one) Please return to otttes on Atomic Bnereys RDB.mESey, -_ Date etaisa ye aetTree rneeeeTy iT: ; IN e 7 RA TANTO el LE 209/5,1 Attachment B Fe ——7