DIACINIE Tl are iba és ieee “tart This document consists of Copy No. ~f q © ¥? “** of 18 2 Series pages AEC-A DEPARTMENT OF DEFENSE MILITARY LIAISON COMMITTEE P.O, BOX 1814 WASHINGTON 13, D.C. . June 4, 1958 Dear Mr, Strauss: In view of the present uncertainty concerning weapon tests after completion of HARDTACK, the Department of Defense is concerned with the impact that a lapse or discontinuation of testing might have on the various weapons under development. On reviewing the various programs, it is apparent that the AtomickEnergy Commission weapon laboratories have made an extensive and highly commendable effort to meet the very wide varlety of DOD requirements, however, it appears now that certain additional tests should be included in the HARDTACK series, These Additional tests fall within three categories: ae Sufficient tests to provide proven, suitable | and safe primaries; ; b, Tests of devices which meet the size requirements of the majority of tie desired applications; ec, Tests to provide proof of operation andeffects data for tne fractional kiloton weapons.. The conclusion that these types of tests are necessary is based on information presently available to the Department of Defense, Therefore, the DOD recommends that Operation HARDTACK be expanded to include the following tests. unless there are substantial reasons to the contrary: ceESERECTEDDATA| This document contains restricted data as defined tn the Atomic Energy Act of 1954. its transmittal or the disclosure of its contents in any manner to an unauthorized person is prohibited, -i.- r

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