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Lavoir des Chavannes - Treatment hall
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Built between 1923 and 1927, it was one of the largest coal processing plant in Europe (1000 t/hour). In the early 50's, all the machinery was modernized, the roof of this hall too... Closed in 1999, it was immediately listed as an historic monument (not sadly like all the vanished mines of this area) and wait its reconversion.
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