Eberlee, John2007-11-131993http://hdl.handle.net/10625/23521French version available in IDRC Digital Library: Trier des résidus miniersSpanish version available in IDRC Digital Library: Desperdicios mineros producen substancia valiosap. 15enMATERIALS PROCESSINGINDUSTRIAL WASTESCHARCOALRECYCLINGINDUSTRIAL ENGINEERINGCOLOMBIAActivated carbon from mine leftoversCanadian collaboration for developmentJournal Article