Tuesday, May 28, 2013

How Engineers Are Building a New Railroad Under New York City

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Workers inspect the “shock tubes” that set off blasting caps, which detonate the charges. More than 2,400 blasts have been conducted on the project.

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For the rest of the story: http://www.wired.com/autopia/2013/05/fa_tunnel/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+wired%2Findex+%28Wired%3A+Top+Stories%29&pid=2708&viewall=true

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