Well, he said something about moving electric equipment nearly every day for 109 years so I assume he works for the tunnels authority. He would have to be 125 if he stared at age 16.
Had to go to YouTube and check them out.... interesting. Looks like they are trying to build 2 more tunnels as well. It's hard these days to build these giant infrastructure projects due to politics and rip offs. Lots of traffic on those 2 tubes each day.