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
  Blaencwm Colliery Sidings (L.M.S.) Map CK207
SRS diagram not available
S1963 Brynamman East (L.M.S.) Map CF209
SN713140
SRS diagram S612
S2159 Brynamman West Map CF209
SN711139
SRS diagram D104 (Brynamman)
S2155 Garnant Map CC210
SN686133
SRS diagram D104
S2152 Glanamman Map CC210
SN674137
SRS diagram D291
S1965 Gwaen-cae-Gurwen (L.M.S.) Map CG208
SN701121
SRS diagram not available
Prices are shown here.