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Conveyance of property 'Y Fron' from...

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Penyrorsedd

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Women of the Valleys

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Locomotif stem yn Chwarel Dinorwig

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Barics yn Chwarel Dinorwig 1973

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Barics yn Chwarel Dinorwig 1973

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Golygfa o Chwarel Dinorwig 1977

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Y Falwoden Lwyd yn Amgueddfa Lechi Cymru

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Cynllun Pwer Hydro Dinorwig 1977

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Golygfa o Gynllun Pwer Hydro Dinorwig yn cael...

Favourites Icons A vector image of a heart to represent a Favourite Item

Cynllun Pwer Hydro Dinorwig yn cael ei adeiladu

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o Gynllun Pwer Hydro Dinorwig yn cael...

Favourites Icons A vector image of a heart to represent a Favourite Item

Cynllun Pwer Hydro Dinorwig 1977

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Rwbel llechi yn Chwarel Dinorwig 1973

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Gweithdai Gilfach Ddu o'r awyr 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Barics yn Chwarel Dinorwig 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Graffiti ar waliau barics 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Barics yn Chwarel Dinorwig 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o weithdai Gilfach Ddu 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o weithdai Gilfach Ddu 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o weithdai Gilfach Ddu 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Clwt o lechen yn cael ei lifio ar fwrdd llifio

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o weithdai Gilfach Ddu 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o weithdai Gilfach Ddu 1973

Favourites Icons A vector image of a heart to represent a Favourite Item

Gweithfeydd chwarel dan ddîr yn Nhalysarn

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o Chwarel Dinorwig

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Golygfa ar draws Llyn Padarn

Favourites Icons A vector image of a heart to represent a Favourite Item

Golygfa o Llechwedd o Gloddfa Ganol