Figure 14.
In a spacious construction site, two workers wearing orange safety gear converse near a large tunnel boring machine positioned against a concrete wall. The machine, notable for its wide circular cutting head with numerous protruding tools, rests against a wooden support structure. Behind them, a green cherry picker sits on an unfinished concrete floor, and scaffolding can be seen leading up to an arched opening in the wall. The walls of the site are bare, revealing a rough, unfinished concrete texture, and construction materials are scattered around the area, reflecting an active work setting.TBM D (named Selina, after pioneering doctor Selina Fox) at Abbey Mills Pumping Station shaft during removal of pressure vessel