| EG&G has been requested to initiate construction of 8 SA-8B zero racks with Ss she understanding that field modifications will be made as required. Plans for a new zero site building to house the zero rack and associated quipment, the alpha rack, the weapons rack, and the alpha dry.run gear have een reviewed with J-6. The building will be equipped and used on the next shot. Support was given to J-11 (air sampling system), EG&G photo (zero fiducial),. ind Sandia (accelerometer measurements) on the Shrew shot." 25 Sept. 61, J-10 Report: / HOt (Re pe A EBON OOF OW+ EWUEIRNOUED —#0 - Under the subject of Vela Sierra, the details of iodifications, fixes, and changes to the presently being tested prototype are ‘etailed, and it is stated "As a result of the USSR test resumption a maximum was wut forth to get the prototype system intregrated and operational as quickly as iossible with available equipment. ....... Shortly after the prototype system was ade operational here at the Laboratory, it was dismantled and shipped to an dvanced station along with other optical equipment to check its ability to detect high altitude and space tests of the USSR. Hoerlin, Westervelt, and four echnicians are engaged in this field operation." In the area of alpha measurements at NTS, the details of alpha cansister design nd inplacement as well as the details of the detection system used are presentcd. ‘reliminary results of alpha measurements obtained on the Shrew test on 16 Sept. ~ -- 2 -- ed AES LE He ‘ery