Category:Mines in North Rhine-Westphalia opened in the 1310s
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Federal states of Germany:
![](https://upload.wikimedia.org/wikipedia/commons/thumb/8/84/Flag_of_North_Rhine-Westphalia.svg/25px-Flag_of_North_Rhine-Westphalia.svg.png)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Schlaegel_und_Eisen_nach_DIN_21800.svg/20px-Schlaegel_und_Eisen_nach_DIN_21800.svg.png)
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This category has only the following subcategory.