On a whistlestop visit to Tata Steel the Prince commemorated the rebuilding of blast furnace number four - a major £185 million project.
He was then shown a video about the lightweight super-strength steel which could transform safety for British soldiers.
As Charles was taken around the marquee, children from Eastern Primary School performed a series of festive songs.
More top news
Not a pleasant night by any means, with further downpours in the west and over the hills. But it will remain mild!
How a little boy from Magor inspired his village to become "Autism Aware"
Nath talks to ITV News about being diagnosed with a form of autism at 16 and how he is aspiring to be a musician.