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
S3293 Blaenau Festiniog Map BM89
SH701460
SRS diagram D242
S3290 Festiniog Map BN88
SH704419
SRS diagram D242
S3287 Trawsfynydd Map BO87
SH714360
SRS diagram P124
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