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==Conversion from semi-automatic to automatic==
==Conversion from semi-automatic to automatic==


The signals were converted from semi-automatic to automatic when [[Hay Lane Ground Frame]] was recovered in January 1974.
The signal was converted from semi-automatic to automatic when [[Hay Lane Ground Frame]] was recovered in January 1974.


[[File: 1974-01.png | border]]
[[File: 1974-01.png | border]]

Revision as of 13:51, 9 November 2014

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Conversion from semi-automatic to automatic

The signal was converted from semi-automatic to automatic when Hay Lane Ground Frame was recovered in January 1974.

1974-01.png