The site's blast furnace is the second largest in Europe.
For a second he felt as if he'd been dropped into a blast furnace.
The first works' blast furnace was put into operation in 1955.
From 1846 to 1848, two new blast furnaces were built.
Its first blast furnace was started on 2 October 1972.
The first blast furnace was put into operation one year later.
And what have we put lots of in the blast furnace, all that black stuff?
A blast furnace can usually work for 10 to 20 years without stopping.
The Chinese blast furnace remained in use well until the 20th century.
It was like sending kids back into a blast furnace.
