and scientific structures and camp facilities. Camp facilities are not to be reconstructed, but portions which are not too severely damaged should have sufficient work performed thereon to prevent further deterioration in order that they may be used for future tests. All scientific structures which are not destroyed or damaged beyond further usefulness are to have appropriate protective maintenance, It is anticipated that military structures will be removed and disposed of as a security measure, and a separate cost estimate should be made for such structures so that NME funds may be requested to cover the cost. (h) All cleanup, salvage, and maintenance work on test islands will be done with the assistance of radiclogical monttors to be provided by this office. (i) All buildings and other structures will be maintained by painting or other preventive measures to avoid more than normal deterioration. (j) The roll-up and maintenance period contemplated herein extends to December 31, 1951. "The basic criteria presented herein will not, in all cases, apply if additional tests should be scheduled; however, you are requested to prepare your estimates on the assumption that such tests will not be scheduled. In preparing your estimates, items will undoubtedly come to your attention which have not been specifically discussed herein; in such cases please call on us for advice. "We wish to reiterate our requirements in these matters for absolute economy in operations consistent with satisfactory maintenance of proving ground facilities for future use." On the basis of this directive and a series of discussions on the subject, estimates were submitted for Job 4 and Job 5, totaling $4,537,720 and $1,463,490, respectively. These estimates were considered high at the time however inthe light of the criteria ultimately developed for. these phages of the work (which differed radically from those given above), the final estimates for Jobs 4 and 5 were much greater than the amounts given above. These final estimates were $6,894,685 for Job 4, and $3,172,900 for Job 5. 12-13