rt 3 m Declassified in Pa - Sanitized Copy Approved for Release 2016fo7f15 The President s Daily Brief JanuaVyl8 1975 5 Declassified in Pad Sanitized Copy Approved for Release 2016io7i15 25x1 Deolassi ed in Part Sanitized Copy Approved for Reiease 20161 07115 - Dcruhnra Yedrovo I t a Moscow Kos'iroms I Kozal Dombaravakiy Kartaly lmtni Gutello I Uzhm I - croTvurataa-n I - 2 1an I I 651 comptex' - a A 55-244 silos conversion 88401 8 oil-whean preparad I -- I 55- silos comptete or under canalmc on if 58-11 silos projected forlconverslon 25x1 I Declassifiea' in Pa - Copy Approved for Release 2016i07f15 Declassi ed in 'Part - Sanitized Copy Approved for Release 201BIDYI15 FOR THE PRESIDENT ONLY USSR The USSR is developing at least one and possibly other new test areas at the Semipalatinsk Nuclear Weapons Proving Ground apparently in anticipation of implementing the US Soviet nuclear thres- hold treaty in April 1976 Once the treaty becomes effective the Soviets will be required to provide specific test informa- tion such as calibration yields and geologic data for those'test areas used after the treaty enters into force Information provided on older areas where existing weapons were developed would permit the US to refine its estimates on the yields of these weapons Soviet concern over this prospect probably is prompting the development of the new test areas The first silos for two of the new' Soviet ICBMs the Mod 1 and probably are now operational Work is continuing on additional silos for these missiles as well as a group for the The which carries sic warheads is the first Soviet strate- gic missile with MIRVs to be installed at an operational complex The first launch group of ten silos for the was completed at the Dombarovskiv ICBM com I plex late last year i I 25x1 mm in early December the Soviets were i m' 25x1 the 5E66 E of installing a missile canister in one- of the silos By now missiles probably have been installed and checked out in all ten silos iDche group The ssux ls Mod 1 which carries a large sin- gle warhead is believed to be the missile system being installed in the newly completed silos The Mod 2 the MIRV version of the has been fired 14 times and probably will require additional testing before it is ready for the field I continued FOR THE PRESIDENT ONLY Declassi ed in Part - Ssnitizsd Copy Approved for Release 2016 07l15 i- Declassi ed in Part Sanitized Copy Approved for Reiease FOR THE PRESIDENT ON LY The Soviets may be testing several different MIRV payload configurations on the Mod 2 Since last summer have carried four re entry vehicles similar to those in previous MIRV tests and four smaller ones with higher re-entry speeds A group of ten SS ll silos has been converted to the silo configuration at the Derazhnva - 25 one missile in the group was being fueled A similar group at the ervomaysk ICBM 'complex may also be complete Developmental flighthesting of the evidently has been completedr and series production 'of the missile probably is under wayu Crew train- ing firings may also have starteda For these rea sons we believe that the recently converted silos are equipped with missiles i 25x1 FOR THE PRESIDENT ONLY Deciasslfied in Part - Sanitized Copy Approved for Re1ease 20161 07115