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Category:Mines in North Rhine-Westphalia opened in 1939

Coat of arms of Germany.svg
Federal states of Germany:
Lower Saxony · North Rhine-Westphalia
Flag of North Rhine-Westphalia.svg Schlaegel und Eisen nach DIN 21800.svg Mines in North Rhine-Westphalia opened in the 1930s 
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1933
1934
1935
1939


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