UPPER BANK COPPERWORKS, SWANSEA
WHITE ROCK COPPER WORKS, SWANSEA
MORFA COPPERWORKS LABORATORY, SWANSEA
Y Barics gwaith copr Drws Y Coed
Tomennydd rwbel gwaith copr Drwsycoed
HAFOD COPPERWORKS, SWANSEA
LOWER FOREST COPPERMILLS, SWANSEA