How It's Made- Train Rails

542713   951   360
2011-01-05 18:03:09 Category: Entertainment מאת:
Tune in to How Its Made Fridays @ 9pm | For more, visit http://science.discovery.com/tv/how-its-made | Train rails can now be almost entirely created from recycled metals. Scraps are picked up, melted and molded to create the tracks that keep our trains running.