Here is an important memo for the secretaries of the services and the chairman of the JCS o —Lyr-om Nel ~a-tin, Reet McElroy{on the subject of “Guidance Covering Nuclear Effects Experiment Phasing During Test Suspension." It begins by referring to Sept. 1958 guidance which directed the services to assume conduct of limited and extensive test operations in Feb. of 1960 and mid-1960 respectively. This guidance is racinded Un and the following applies: “test planning will be maintained aad a current status at all times. However, expenditures for construction, equipment and instrumentation for specific tests will be based on the following assumptions and will be limited Pee to funds available to the military departments and to the DASA for weapons testing DF purposes; A. One or more underground tests may be authorized during calendar year 60 and may be conducted on 5 to 6 months notice. B. An extensive weapons effects series involving overseas operations and in environments other than underground may not be conducted prior to the spring of 1961. Within the above guidelines the DDR&E will provide specific guidance on preparedness for test programs from time to time as warrented by changing circumstances." etc., addressing correspondence indicates meetings, discussions, Aug. 59 nt ee = decoup | ing and testing thereof. Salt domes as sites being studied. ssed. Use of snow or Ice as decoupling medium discu FP

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