Sir Henry Bessemer invented this furnace that creates “Bessemer steel” by burning carbon out of cast iron.
Ellsworth D. Foster ed. The American Educator (vol. 7) (Chicago, IL: Ralph Durham Company, 1921)
2400×2342, 858.5 KiB
1024×999, 156.6 KiB
640×624, 82.1 KiB
320×312, 29.3 KiB