Pipefitters work on the steam heating pipes while another worker washes the brick on the west wall. Ecology blocks are attached to the girders via steel cable to keep the roof sturcture stable until the outer roof is in place.
Bricklayers work on the North end wall.
Four cranes are required to complete the roof. The peak of the roof is 65 high. The first two roof supports tied together. A crane holds the second set of roof supports while workers tie them to the other two with purlins. Workers bolt the pieces together from portable lifts.