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UPPER BANK COPPERWORKS, SWANSEA

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Atomfa Trawsfynydd, 1965

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Y tu mewn i ddrwm, atomfa Trawsfynydd

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Bloc gweinyddol, atomfa Trawsfynydd

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Golygfa o Atomfa Trawsfynydd

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Storfa Ddiogel Dau, Atomfa Trawsfynydd, 2010

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Gorsaf dosfesuryddion electronig personol (EPDs)

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Mynedfa i’r adweithydd, cyfarpar monitro ymbelydre

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Allanfa o’r adweithydd, cyfarpar monitro ymbelydre

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Y tu allan, Bloc yr adweithyddion

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Consol rheoli sgrablo pwll

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Castio slab concrit y to capio

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Awyrluniau'n dangos Atomfa Trawsfynydd, 1960

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Caerau Hillfort Excavations

Casgliad: 11 eitem

Caerphilly Castle

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Rescue Mission: Agenda 21

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Cowbridge History Society Newsletter No 51...

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Golygfeydd o Gapel Celyn a'r ardal, gan gynnwys...

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Arwydd ger y ffordd a oedd yn arwain at bentref...

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Grŵp y tu allan i Gapel y...

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Dau heddwas y tu allan i Gapel y Methodistiaid...

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Trigolion Capel Celyn (Tryweryn) a'r ardal, 10...

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Trigolion Capel Celyn (Tryweryn) a'r ardal, 10...

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Trigolion Capel Celyn (Tryweryn) a'r ardal, 10...

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Plant fferm Tŷ Nant, Cwm Croes,...

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Cneifio am y tro olaf yng Nghapel Celyn,...

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Cneifio am y tro olaf yng Nghapel Celyn,...

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Dymchwel y rheilffordd yng Nghapel Celyn ...

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Un o drigolion Capel Celyn (Tryweryn), 1961

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Un o drigolion Capel Celyn (Tryweryn), 1961