Numerous changes in detailed constructionplane orixted field construction forces, AEC representatives,and ushg with services. These were issued in the form of Change Orders to Resident Engineers concerned. The fullest leeway was permitted Resident Engineers in controlltigtheir projects and h no case was this confidence abusea. It developed an initiativeand interest in achievement which got things done on time. One essential feature of the constructionprogram las been touched upon only by merest reference. An early requirement for a . first order triangulationnet to cover the test ccmstmction called for an immediate solution. The services of Lt. Col. Daniel Kemedy, Mgr. Res., of the Army Map Service were obtained to organize and direct the nmpping and survey activities of the J1’F. Within a few slmrt weeke Lt. Col. Kem~ completed negotiationswith the U. S. C. & G. S. for the loan of a highly qualified field party. This group accompanied + the Joint Task Force Engineer to the site of operations on 1 December 1947, where, under the direction and control of Lt. Col. Kennedy, they accomplishedthe preliminary constriction survey and finally the first order triangulation. ~jor DeBardelebenand Mr. Linthicum, tecinical representatives of the Chief of Engineere, in addition to supervising the construction of their eervice teet strictures,volunteered to set-up and operate a central concrete control laboratory to serve all job requ$r~nts. Due to their efforte adequate field cotirol was establishedand zmintained 15 Section XVI