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
S3284 Arenig Map BQ86
SH831392 		SRS diagram P124
S3282 Bala Map BS84
SH930362 		SRS diagram D241
S3270 Bala Junction Map BS84
SH937355 		SRS diagram D182
S3285 Cwm Prysor Map BP86
SH791384 		SRS diagram S807
S3283 Frongoch Map BR85
SH903391 		SRS diagram D241
S3287 Trawsfynydd Map BO87
SH714360 		SRS diagram P124
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