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michael-otto-foto: look downwards
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michael-otto-foto: come in
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michael-otto-foto: Mine lighting
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michael-otto-foto: connection distributor
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michael-otto-foto: Reflections blue room
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michael-otto-foto: machine detail
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michael-otto-foto: machines hall
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michael-otto-foto: golden detail
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michael-otto-foto: machine detail
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michael-otto-foto: machine in golden light
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michael-otto-foto: danger hydrogen sulfide
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michael-otto-foto: checkered
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michael-otto-foto: staircase