RISC OSMap of G.W. SignalboxesRISC OS
http://www.svrsig.org/gwmap/GWMap.htm
Sxxxx numberSignal Box nameView on map squareOther information including SRS diagram number
S1548 Aberthaw East Map DG172
ST035665
SRS diagram B22 (Aberthaw)
S1549 Aberthaw West Map DF172
ST033673
SRS diagram not available
S1550 Gileston Map DE172
ST016675
SRS diagram not available
S1552 Llantwit Major Map DB172
SS970689
SRS diagram D162
S1551 St. Athan Map DC172
SS988685
SRS diagram D162
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