Columbia subject headings:
Iron miners--France--Lorraine--History--20th century.
Iron mines and mining--France--Lorraine--History--20th century.
Lorraine (France)--Social conditions.
Harvard subject headings:
Iron miners--France--Lorraine--Social conditions--20th century.
Iron mines and mining--France--Lorraine--History--20th century.
Princeton subject headings:
Iron miners--France--Lorraine--Social conditions--20th century.
Iron mines and mining--France--Lorraine--History--20th century.