David Propes, left, and Richard Hensen, right, operate the humongous excavation machine, 'Harriet,' as it digs beneath the limestone floor of Biscayne Bay. The $1-billion Port of Miami Tunnel is expected to be completed by May, 2014. It will connect the port with Watson Island, in Miami.
Roberto Koltun, El Nuevo Herald
Copyright © 2017, Los Angeles Times