Those who lament the difficult conditions workers faced while building the first transcontinental railroad using manual labor will be cheered by the amazing progress exemplified by this video of a
train that lays its own track.
[Courtesy Google Alerts.]
Have seen the same type of train which automatically replaces the old ties and rails with new ones, working on the Philadelphia Main Line. A huge increase in productivity compared with the 19th century and quite amazing to watch!!
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