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RE: UNESCO World Heritage Site: Zollverein Coal Mining Industrial Complex: #01 - Shaft 1/2/8
The last one is a drilling head thst was used to break the ore deep down in the shafts .. it is actually a really small one ^^ they are drilling heads that are more than three times the size ;) .. thank you for stopping by !
You're welcome! And thanks so much for providing me more details. Very interesting! ;)