& exsentielly. comple pe pacity this spring, thus returning for enric Sion facilities the depleted material which fornerly red gone “into underground weste storege. This will represent the culrizetion of years of © the most difficult research and development and will link in combined operation the production of plutcnium at Hanford and Savennah River and the production of uranium 235 at Oak Ridge and Paduceh. The lest unit of the K-31 addition at Oak Ridge ~as placed in full cperation early in December, 2 months earlier than enticipated. In contrast, key segments of the present expansion program have proceeded less favorably, as the combined result of ~crk stoppages, delays in celiveries of materials end equipment, and inedequate and conmpeting priorities. Construction completion dates have had to be set beck sharply for several highly important projects (see Appendix B). For example, completion of the Dana heavy water production plants, which were 7? percent complete against a scheduled 89 percent at the end of November, has teen set back 3 months to April, 1952. At the Sevarneh River Plent, the cu Pont Company has predicted that if the present unsatisfactory deas June, 1953. ) eg a 3 om a ; ¢) former target cf October, 1952, to as late i livery experience is continued there will be a 9-months' delay in the project, with the startup of the first reactor being set back fren the Difficulties too have érisen in ihe pro roéuctiozn cf pluteniun and ftein nonnucliear weapon components. The continued cccaurrence of rupturec slugs in the Eanford reactors caused eaedditionel rile outare time and prevented attainment of the increased retes of plutcnium synthesis previously prejectec. Froblems with the racer furing cevice Cesigned for the Mark 6 have Geleved the oreretionel dete of this «-apen. Ntwithstanding thes x 2 £ Sucti f th 22 tl is now et ivs hig int € ° 1 weeron essemclies c c righe F erial anc pm ni 3 . nie Energy act : aL cP os oa on in iS51 he ” ~= -_ ureénium €33 for “es fission eer se OT? tnermonuciear errrosches, sieérs are tei t ~~ 2vor Y yg + a s 2 a M In choy QO Zz 4 .