> *The pipes ran through the sewers of the city, and the tunnels of the Metro an... | Hacker News

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		bambax on March 20, 2019 \| parent \| context \| favorite \| on: The Paris Pneumatic Clock Network (2018) > The pipes ran through the sewers of the city, and the tunnels of the Metro and the RER. (...) Operation began in 1880... The Paris Metro was inaugurated in 1900, and the RER in 1977, so this is unlikely. (It would be possible to run pipes through tunnels before the inauguration, but works on the Metro started no earlier than 1898). https://fr.wikipedia.org/wiki/Histoire_du_m%C3%A9tro_de_Pari... https://fr.wikipedia.org/wiki/R%C3%A9seau_express_r%C3%A9gio...

bunderbunder on March 20, 2019 [–]

According to TFA, the pneumatic clock system was in operation until 1927, so there might have been plenty of time to make use of the Metro's tunnels at least a little bit - perhaps to extend service to new buildings.

bambax on March 22, 2019 | [–]

Maybe, but not at the time of implementation, and certainly never with the RER.

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