These dramatic images come from a 1951 animated film about the steel industry.
The 10 minute animation is split into two sections. The first, with dramatic narration and music extols the importance of the steel industry on America.
The second is a little more surreal, with a world where steel has vanished. Lovely image of steel pouring out of a map of the UK from Sheffield and a very British voice tells us that we all need steel!
This, from the BFI, gives the background of the film: