( ( ( ( metal ( and ( ore refining ) ) ) , ) ( 6 percent ) ) ; )
(ROOT (NP (NP (NN metal) (CC and) (NN ore) (NN refining)) (, ,) (NP (CD 6) (NN percent)) (: ;)))
metal and ore refining, 6 percent;
(ROOT (S (NP (NNS Metals)) (VP (VBP start) (PRT (RP out)) (PP (IN as) (NP (NN ore)))) (. .)))
Metals start out as ore.