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The reprocessing of tailings is gaining importance both for economic and environmental reasons. In the case of abandoned mining waste disposals, the reprocessing of tailings constitutes an option that can be considered to fit the paradigms of the actual mineral industry challenges: circular economy and sustainability. The present study focuses on the tailings of an old embankment (Cabe?o do Pi?o) of the tungsten Panasqueira mine, in central Portugal. Although Panasqueira mine is still in operation today, it had it...