I enjoyed reading this. Hope you will too.
https://www.thomasnet.com/insights/unearthing-how-new-york-city-s-subway-tunnels-were-built-a-byte-out-of-the-big-apple/
In 1870, Alfred E. Beach, the editor of Scientific American, illegally created a pneumatic subway.
https://www.thomasnet.com/insights/unearthing-how-new-york-city-s-subway-tunnels-were-built-a-byte-out-of-the-big-apple/
Unearthing How New York City’s Subway Tunnels Were Built [A Byte Out of the Big Apple]
www.thomasnet.comIn 1870, Alfred E. Beach, the editor of Scientific American, illegally created a pneumatic subway.