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\\n\\nHead underground to hear how some of the first subways were built, and how they are built today.
\\n\\nThis story was originally produced by Bishop Sand in 2013. It was hosted for Transistor by Genevieve Sponsler and mixed for Transistor by Josh Swartz.
\\n\\nImage: CC BY-SA 3.0 Adam E. Moreira | Music: Whurlywind from Podington Bear
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