Talk:Amtrak's 60 Hz traction power system

External links modified
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I have just modified 2 one external links on Amtrak's 60 Hz traction power system. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://web.archive.org/web/20110721040739/http://www.oig.dot.gov/library-item/4831 to http://www.oig.dot.gov/library-item/4831
 * Added archive https://web.archive.org/web/20100527153152/http://www.fra.dot.gov/downloads/RRdev/rdv0601.pdf to http://www.fra.dot.gov/downloads/RRdev/rdv0601.pdf

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Cheers.— InternetArchiveBot  (Report bug) 01:44, 12 October 2016 (UTC)