CHAPTERI VOL. I BOOK 5 however, that Support Services were required to a considerable extent through- out the Construction and Operation Phases. The following tabulation indicates the number of orders issued and approved by the AEC Resident Engineer, the man hours of direct labor required at the Jobsite and the total cost, by months, for Support Services. JOB IV WORK ORDER SUMMARY- 1 JANUARY THRU 31 DECEMBER 1952 Month 1952 No. of Orders January 7 Man Hours 1,314 TotalCost 12, 766. 27 February 20 2,979 28,948.92 March April May June July 8 6 3 3 ll 2, 309 1, 349 9,810 12,355 9,612 22, 438. 09 13, 109.12 95, 330, 32 120, 061. 81 93,406.21 164 193 80 _10 12, 282 16,178 12, 232 440 119, 352. 39 157,212.45 118, 866. 50 4,275.77 91,617 890, 300. 81 August September October November December TOTAL 48 553 10, 757 104, 532.96 A compilation of the variety of requirements in terms of materials, supplies, equipment and classifications of labor reflected in the 553 Job IV Work Orders issued for assistance to the Scientific Using Agencies, is included in Chapters II, III and IV of this Book.