This category 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 category, 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
The category on Blue John (mineral) is supported by the Derbyshire WikiProject, which is a collaborative effort to improve the quality and coverage of Derbyshire-related articles on Wikipedia.DerbyshireWikipedia:WikiProject DerbyshireTemplate:WikiProject DerbyshireDerbyshire articles
