1 Foremen
2 Laborers
3 Reinforcing iron workers
4 Operating engineers
5 Masns and brick layers
6 Plumbers and pipefitters
7 Carpenters
8 Roo fers
9 Building technicians
10 Airconditioning technicians
11 Glaziers
12 Painters and paperhangers
13 Electricians
14 Draftsmen