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michael-otto-foto: worker stamp cards
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michael-otto-foto: Kokerei Hansa Waschkaue
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michael-otto-foto: machine detail
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michael-otto-foto: Kokerei Hansa coking plant machine hall
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michael-otto-foto: machine detail
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michael-otto-foto: Kokerei Hansa coking plant machine hall
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michael-otto-foto: Kokerei Hansa coking plant machine hall
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michael-otto-foto: washing chew
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michael-otto-foto: steel spider web
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michael-otto-foto: gate valve
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michael-otto-foto: hydrogen
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michael-otto-foto: Wassergestalt Kokerei Hansa
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michael-otto-foto: thousands of water drops
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michael-otto-foto: mining mascot