» * CHAPTER AIR MONITOR UNIT a URCLASSIFlLu INTRODUCTION The Air Monitor Unit, Task Unit 7.6.1, arrived at Kwajalein Atoll on 17 March 1948 to participate in Operation SANDSTONE, this unit was twofold: The mission of primarily to insure the radiological safety of Air Task Group 7.4 and secondarily to obtain, compile and evaluate data likely to be of value to the AEC or Department of National Defense. This unit consisted of 24 officers and was cammanded by Col. Robert N. Isbell, ACTIVITIES Col, Isbell and It. Col, Cody discussed the mission of Task Unit 7.6.1 with Lt. Col, Jennings, C/S of ATG 7.4, shortly after arriving at Kwajalein. Coordination and assistance on such problems as housing, messing, supply, operations and administration were agreed upon. ATG 7.4, personnel completed the erection of such installations as were required by 22 Larch 1948 and the task Unit was ready for operations by 24 March 1948. Instruments arrived on 20 March and were placed in temporary storage until.a suitable storage box was constructed from an abandoned cold storage reefer. These included 50 G-M type instruments, 55 ion chamber type instruments, 150 pocket dosimeters and other auciliary equipment including a radium source, Projects immediately undertaken included publication of operational memoranda, assignment of monitors to mission aircraft, indoctrination and ~ 86 + an ,