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19th Century – Pneumatic tube systems

In 1867 at the American Institute Fair in New York, Alfred Ely Beach demonstrated a 100-foot (30 m) long, 6-foot (1.8 m) diameter pipe that was capable of moving 12 passengers plus a conductor. Then in 1869, the Beach Pneumatic Transit Company of New York secretly constructed a 312-foot (95 m) long, 8.9-foot (2.7 m) diameter pneumatic subway line under Broadway, to demonstrate the possibilities of the new transport mode.

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