4 ms·
Based on the tweet below from the conversation I think it's Pneumatic Tube Transportation: http://en.wikipedia.org/wiki/Pneumatic_tube http://en.wikipedia.org/w
by smountcastle 14y ago
Based on the tweet below from the conversation I think it's Pneumatic Tube Transportation: http://en.wikipedia.org/wiki/Pneumatic_tube http://en.wikipedia.org/wiki/Pneumatic_tube
https://twitter.com/PandoDaily/status/223611501255213057 https://twitter.com/PandoDaily/status/223611501255213057