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| Re: Fourth Rails and Safety (832314) | |||
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Re: Fourth Rails and Safety |
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Posted by Subterranean Railway on Sat Sep 12 02:53:42 2009, in response to Re: Fourth Rails and Safety, posted by Wado MP73 on Fri Sep 11 21:35:53 2009. Interesting. I didn't know Yerkes influenced the system before his arrival in 1900. (IINM, the fourth rail was implemented in the 1890s.) |
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