The "Mansion House sub-station gap track safety diagram" shows the power supply arrangements to the electrified track between Cannon Street and Blackfriars tube stations. This copy is on the eastern headwall of the westbound platform at Blackfriars.
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Photo by <a href="mailto:cmckenna@sucs.org?subject=rail-photo at railfaneurope.net">Chris McKenna</a> 10/08/2006.<br>
Larger, higher quality copies of my photos are available, <a href="http://www.sucs.org/~cmckenna/rfephotos.html">click here for details</a>.<br>
If you wish to use this, or any other of my photographs, under a different license see <a href="http://commons.wikimedia.org/wiki/User%3AThryduulf/Relicensing">my relicensing policy</a>.<br>
Feedback on my pictures is always welcome.