Saint-Charles shaft
The Saint-Charles shaft (or No. 8 shaft) is one of the main collieries of the Ronchamp coal mine.
The Saint-Charles shaft (or No. 8 shaft) is one of the main collieries of the Ronchamp coal mine.
The Saint-Charles shaft (or No. 8 shaft) is one of the main collieries of the Ronchamp coal mine.
Source: Wikipedia "Saint-Charles shaft" · CC BY-SA 4.0
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