Columbia subject headings:
Blast furnaces--England--History.
Blast furnaces--Great Britain--History.
England--Gazetteers.
Great Britain--Gazetteers.
Iron industry and trade--England--History.
Iron industry and trade--Great Britain--History.
Harvard subject headings:
Blast furnaces--England--History.
Blast furnaces--Great Britain--History.
England--Gazetteers.
Great Britain--Gazetteers.
Iron industry and trade--England--History.
Iron industry and trade--Great Britain--History
Princeton subject headings:
Iron industry and trade--Great Britain--History.