This article is within the scope of WikiProject Mining, a collaborative project to organize and improve articles related to mining and mineral industries. If you would like to participate, you can edit the attached article, or visit the project page, where you can see a list of open tasks, join in the discussion, or join the project.MiningWikipedia:WikiProject MiningTemplate:WikiProject MiningMining articles
This article is within the scope of WikiProject Museums, a collaborative effort to improve the coverage of museums on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MuseumsWikipedia:WikiProject MuseumsTemplate:WikiProject MuseumsMuseums articles
This article is within the scope of WikiProject Luxembourg, a collaborative effort to improve the coverage of the Grand Duchy of Luxembourg on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.LuxembourgWikipedia:WikiProject LuxembourgTemplate:WikiProject LuxembourgLuxembourg articles
The article contains self-contradiction about which gallery is the upper and which one is the lower.
The upper gallery Hoffnung (Hope), was first mentioned in documents dating from 1850, and the lower gallery Barbara...
...
Barbara Mine, which is situated approximately 25m higher than the second, Hoffnung (Hope), were connected by a sloping tunnel
