Chinese and Irish laborers for the <a href="https://en.wikipedia.org/wiki/Central_Pacific_Railroad" id="mweA" rel="mw:WikiLink" title="Central Pacific Railroad">Central Pacific Railroad</a> working on the <a href="https://en.wikipedia.org/wiki/First_transcontinental_railroad" id="mweQ" rel="mw:WikiLink" title="First transcontinental railroad">First transcontinental railroad</a> lay ten miles of track in one day, a feat which has never been matched.