mining, coal, Zollern II/IV Colliery, Dortmund, Germany, interior view, machine hall, circa 1910, Additional-Rights-Clearences-Not Available

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Photo credit: © INTERFOTO / History / Alamy / Afripics
License: Licensed
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Keywords: -, 1910s, 20th, area, bergwerks-ag, black, century, coal, colliery, dortmund, era, gbag, gelsenkirchener, germany, hall, historic, historical, imperial, industry, interior, machine, mining, north, rhine, rhine-westphalia, ruhr, view, westphalia, zollern