. 4 PROGRESS MANHOURS o—-—-—« DESIGN THOUSANDS OF MANHOURS PER MONTH (“J 100 50 [~ 40 30 20 10 -t a4) FEB MAR APR MAY JUN JUL 1953 AUG SEP OocT NOV DEC Figure 23 Scientific Structures, Design and Drafting - Progress and Manpower Chart 48 JAN wt 1954 PERCENT OF COMPLETION 70