16 MA RA THON MET ALLURGICAL STUDIES 16 Sev eral s tudi es done at ac c redited l abs from 1960s 2014 Ini ti al grind to 150 mi c rons Float c opper and PG M c oncentrates Regrind c opper to 20 mi c rons Regrind P G M to 10 mi c rons Both c oncentrates re fl oated Combi ne to s i ngl e c onc entrate for s hi ppi ng No s tudi es for 6 y ears further tes ti ng may resul t i n hi gher recov eries Exami ni ng Stag ed Flotati on Reac tors W oodgrov e to replac e s ec ond gri nd Concent rate w i l l be v ery l ow i n del eteriou s el ements c omm onl y s een i n c opper c onc entrateand not ex pec ted to draw any penal ti es Ex en C ons ult ing D ec 2019 M E T A L R EC O VE R I ES TO C O N C E N T R A TE P al l ad i um 82 9 C op pe r 89 7 P l atin um 74 5 Gol d 73 2 S i l v er 71 5