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| Re: PHOTOS: PORT ROAD SHOEFLY (676658) | |||
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Re: PHOTOS: PORT ROAD SHOEFLY |
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Posted by Jersey Mike on Thu Sep 4 08:44:25 2008, in response to Re: PHOTOS: PORT ROAD SHOEFLY, posted by Bill West on Thu Sep 4 03:27:26 2008. Thanks for the information. I love the old PRR 25Hz power network. It's an absolutely fascinating piece of engineering that even still has the original 1939 Visicode based SCADA system in service at the Harrisburg power dispatcher's office as well as rotary frequency converters at Lamokin and Metutchen. |
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