![](https://coimages.sciencemuseumgroup.org.uk/711/82/large_thumbnail_2023_0467__0010_.jpg)
Blast-furnace slag from the furnace casting in 1851
- Made:
- 1851
![Blast-furnace slag from the furnace casting in 1851](https://coimages.sciencemuseumgroup.org.uk/402/849/medium_smg00102123.jpg)
Blast-furnace slag from the furnace casting in 1851, at a time that three qualities of iron were obtained
Blast-furnace slag from the furnace casting in 1851, at a time that three qualities of iron were obtained