Other accidents took lives, and at least one worker lost a hand. Two men were killed when a boiler exploded. Two more died when a boom on an island collapsed. Another was killed when a cable snapped and struck him. Yet another was electrocuted. The seventh death happened at a yard in Texas where the tunnel sections were cast.
Traversing narrow beams and other exposed structures required conflicting skills. Workers had to remain acutely aware of their footing but keep pace with the action around them.
Most returned day after day, season after season. Some did not.
One laborer, fresh from the Army, showed up for his first day with a buzz cut and camouflage fatigues. After the boat ride to his job site, he began to climb a ladder - and froze near the top.
Dunn, seeing that the man could not bring himself to finish the ascent or to come down, got on and pushed him up with his shoulders.
He never saw the worker return.