( ( Concentrator ( ( A ( ( mill or ) plant ) ) ( ( in which ) ( minerals ( are ( ( ( separated ( from ( waste rock ) ) ) , ) ( usually ( containing ( ( grinding mills ) ( where ( ( the ore ) ( is ( ( ground ( and ( flotation cells ) ) ) ( where ( ( the ( mineral concentrate ) ) ( is extracted ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Concentrator) (NP (NP (DT A) (NN mill) (CC or) (NN plant)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NNS minerals)) (VP (VBP are) (VP (VBN separated) (PP (IN from) (NP (NN waste) (NN rock))) (, ,) (S (ADVP (RB usually)) (VP (VBG containing) (NP (NP (VBG grinding) (NNS mills)) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (NN ore)) (VP (VBZ is) (NP (NP (NN ground) (CC and) (NN flotation) (NNS cells)) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (NN mineral) (NN concentrate)) (VP (VBZ is) (VP (VBN extracted)))))))))))))))))) (. .)))
Concentrator A mill or plant in which minerals are separated from waste rock, usually containing grinding mills where the ore is ground and flotation cells where the mineral concentrate is extracted.
(ROOT (S (NP (JJ Ores) (NN rock)) (VP (VBZ contains) (NP (NP (NNS concentrations)) (PP (IN of) (NP (JJ valuable) (NNS minerals))))) (. .)))