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Rheidol hydro power station.

Rheidol hydro electric power station

Rheidol hydro electric power station

Rheidol hydro power station

Dinas dam showing discharge regulator in action...

The weir and Felin Newydd Bridge, Capel Bangor

An observation terrace at Felin Newydd, Capel...

Felin Newydd bridge, Capel Bangor in 1964

Felin Newydd bridge, Capel Bangor in 1955

Weir at Felin Newydd, Rheidol Hydro Electric...

Caern Owen quarry, Rheidol Hydro Electric...

Road bridge on approach road to Dinas power...

Man fishing at Rheidol Hydro Electric Station,...

30,000 volt switching station, Rheidol Hydro...

View of reception room at Rheidol, Rheidol...

The control room, Rheidol Hydro Electric...

Top of number 3 machine spiral casing showing...

Drainage and dewatering pump motors, Rheidol...

Cwm Rheidol power station, 1965

Dinas pressure tunnel, Rheidol Hydro Electric...

Dinas turbine hall, Rheidol Hydro Electric...

Dinas station control panel, Rheidol Hydro...

Main shaft casing, No.1 turbine, Rheidol Hydro...

Dinas Power Station, Rheidol Hydro Electric...

Nant-y-Moch Dinas Tunnel, Rheidol Hydro...

Nant-y-Moch dam and reservoir, Rheidol Hydro...

Nant-y-Moch dam under construction, Rheidol...

Cwmdyli hydroelectric station showing pipeline

Interior view of Cwm Dyli Hydro Electric Power...