Railroad and Bank Building
... that the Railroad and Bank Building was built with six miles (9.7 km) of pneumatic tubes used to send items anywhere within the building in under ten seconds?
... that the <b id="mwAw4"><a href="./Railroad_and_Bank_Building" id="mwAw8" rel="mw:WikiLink" title="Railroad and Bank Building">Railroad and Bank Building</a></b> was built with six miles (9.7<span id="mwAxA" typeof="mw:Entity"> </span>km) of <a href="./Pneumatic_tube" id="mwAxE" rel="mw:WikiLink" title="Pneumatic tube">pneumatic tubes</a> used to send items anywhere within the building in under ten seconds?