During the war the foundry was used to make ammunition.
Gun-control groups were incensed that anyone would make such ammunition.
The company makes ammunition and sells weapons to police departments around the country, authorities said.
These included a significant amount of foreign made ammunition.
"You could take a 20-minute course and learn how to make ammunition."
Due to financial difficulties and the inability to make ammunition because of the war efforts, the company produced rifles under Newton for 16 months.
The steel factories of Sheffield were set to work making weapons and ammunition for the war.
Some remains of the furnace used for making ammunition can still be seen.
It was used as a fungicide and to make fireworks and ammunition.