Bill Hansmire has seen many changes in the tunneling world since starting out in the early 1970s. From complex computer software to precast concrete lining to the advent of giant tunnel boring machines (TBMs), the industry has been revolutionized.
“The changes are unimaginable,” says Hansmire, who is senior vice president and technical director for tunnels at WSP. “The ideas of the machines like the TBMs that we have today were unheard of in 1970.”