Cold Rolling

Sheet copper was used on the bottom of Royal Navy ships, to make steam boilers, coins and many other items.  Defnyddid dalenni o gopr ar waelod llongau’r Llynges Frenhinol, i wneud boeleri stêm, darnau arian a llawer o eitemau eraill. Britain’s status as a global power in the 19th century was built on the Royal […]