Columbia subject headings:
Miners--Germany--Saarland--Economic conditions.
Miners--Housing--Germany--Saarland--History--19th century.
Saarland (Germany)--Social conditions.
Strikes and lockouts--Germany--Saarland--History--19th century.
Working class--Germany--Saarland--History--19th century.
Harvard subject headings:
Miners--Germany--Saarland--Economic conditions.
Miners--Housing--Germany--Saarland--History--19th century.
Saarland (Germany)--Social conditions.
Strikes and lockouts--Germany--Saarland--History--19th century.
Working class--Germany--Saarland--History--19th century.
Princeton subject headings:
Miners--Germany (West)--Saarland--Social conditions.
Strikes and lockouts--Miners--Germany (West)--Saarland--History.