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Re:Goldman Sachs invests $250M in compressed air energy storage by RickJWagner on Wednesday January 12, 2022 @08:40PM (#29915746)
I saw a similar thing in a very old building, I think from the early 1900s.

The web of tubes was for messaging. (Just like some bank drive-ins work.) Users would put paper messages in capsules which were put into a pipe. Compressed air would carry the message to a central switching station, where human operators would re-route the message to the proper destination tube.

It was pretty cool, in a steam-punk sort of way.

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