REMOVE

1. Bessemer process

WHAT

1. Architecture, Industrial (1)
2. Bessemer, Henry, Sir, 181 … (2)
3. Heritage -- England -- Sh … (1)
4. Industrial buildings (1)
5. Industrial revolution (2)
6. Museums -- England -- She … (1)
7. Steel (1)
8. Steel foundries (1)

WHERE

1. ENGLAND, UK (2)
2. Sheffield, South Yorkshir … (2)

WHO

1. BESSEMER, Henry (1)
2. not known (1)

WHEN

1. 1856 (1)
2. 1857 (1)