Building underground tunnels for 30 second delivery times | HN Mirror

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	Building underground tunnels for 30 second delivery times (share.transistor.fm)
	3 points by Mat_Sherman 2097 days ago

1 comments

pwg 2097 days ago

What was old is new again:

> Pneumatic tube mail in New York City

> https://en.wikipedia.org/wiki/Pneumatic_tube_mail_in_New_Yor...

> The pneumatic tube mail was a postal system operating in New York City from 1897 to 1953 using pneumatic tubes