Category:Grube Humboldt (Bergisch Gladbach)
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Media in category "Grube Humboldt (Bergisch Gladbach)"
This category contains only the following file.
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Profil Humboldt.jpg 1,900 × 1,368; 751 KB
Categories:
- Paffrath
- Mines in Bergisch Gladbach
- Bensberger Erzrevier
- Lead mines in Rheinisch-Bergischer Kreis
- Zinc mines in Rheinisch-Bergischer Kreis
- Iron mines in Rheinisch-Bergischer Kreis
- Lignite mines in Rheinisch-Bergischer Kreis
- Sphalerite mines in North Rhine-Westphalia
- Pyrite mines in North Rhine-Westphalia
- Mines in North Rhine-Westphalia opened in 1853