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September 5, 2012 02:27 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/mkW8KO4oQ9k/the-secret-history-of-the-st.html
The secret history of the St. Louis Post Office and its amazing pneumatic tube
In 1905, the St. Louis post office built a two-mile pneumatic tube system to deliver mail between the train station and the post office. It was expensive to maintain ($17,000 per year per mile of tube) and ruined a lot of mail. From Aimee Levitt's article in the Riverfront Times: St. Louis's tubes ran a [...]Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/mkW8KO4oQ9k/the-secret-history-of-the-st.html
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