Trên o'r enw Coel gyda'r Fan Arolygu a Mr....
Craeniau ar argae Caban Coch, Cwm Elan yn ystod...
Dol y Mynach Dam, Elan Valley under...
Craig Goch dam, Elan valley under construction...
Argae Craig Goch yn ystod y gwaith adeiladu
Elan Valley Filter Beds near Caban Coch Dam,...
Caban Coch dam, Elan Valley Laying of the...
Caban Coch interior of cement cooling shed.
Caban Coch dam from downstream
Caban Coch construction, Elan Valley
Dechrau adeiladu argae Caban Coch, Cwm Elan
Cyffordd yr Elan a Gwy ger Rhaeadr Gwy
Craig Goch Dam Main Trench, Elan Valley
Excavation at Claerwen (?) Elan Valley
Claerwen Dam Arches Construction
Claerwen Dam and Claewen Reservoir, aerial shot.
At the Site of the Construction of Caban Coch (...
Construction of Caban Coch Dam
Pen y Garreg Construction
Old Nantgwyllt Church
Elan Valley Claerwen Dam Construction
Warley Reservoir interior
Elan Valley Aqueduct Teme Bridge Leintwardine
Elan Valley Aqueduct Stour Canal crossing.
Ithon aqueduct looking west.
Frankley Reservoir stream diversion and east wall.
Frankley Reservoir pipe store and Masons'...
Frankley Reservoir main diversion wall looking...
Frankley Reservoir South outlet well.
Frankley Reservoir inlet weirs
