Possibly the swiftest route to your roots.
Irish genealogy website directory.
knockanure.jimdo.com/irish-south-america/
Description:
Toward the end of the line, Crocker was so convinced of the skill of his Irish and Chinese workers that he decided to try for a record by laying 10 miles of track in one day. April 28, 1868 was the appointed day, and Crocker had prepared well.