Reposted by Gateway Development Commission
The tools and innovations to dig under the Hudson River dramatically improved since the Pennsylvania RR did it in 1906.
But both projects share some similar challenges.
Also we unearthed dozens of archival photos - check it out ⬇️
northjersey.com
Dynamite was key to 1906 Hudson dig. Gateway tunnel tools have evolved
Examining how the North River rail tunnel was built in 1906 shows how strategy and tech were — and weren't — different from today's Gateway project.