▁again ▁and ▁took ▁on ▁much ▁of ▁the ▁character ▁traditional ▁goods ▁still ▁have . ▁ ▁Today , ▁important ▁metal ▁products ▁include ▁those ▁from ▁silver , ▁gold , ▁co pper , ▁iron , ▁tin ▁and ▁more ▁made ▁into ▁j ew el ry , ▁household ▁objects , ▁furn iture , ▁p ots , ▁decor ative ▁objects , ▁to ys ▁and ▁more . ▁Import ant ▁metal ▁working ▁cent ers ▁include ▁Tax co ▁for ▁silver , ▁Santa ▁Clara ▁del ▁C obre ▁for ▁co pper , ▁Cel aya ▁for ▁tin ▁and ▁Z ac ate cas ▁for ▁wr ought ▁iron . ▁ ▁History ▁ ▁Pre his pan ic ▁period ▁ ▁Metal ▁working ▁in ▁Mes o amer ica , ▁especially ▁of ▁silver , ▁gold ▁and ▁co pper ▁was ▁advanced ▁by ▁the ▁time ▁the ▁Spanish ▁arrived , ▁mostly ▁concentr ated ▁in ▁the ▁modern ▁states ▁of ▁Mich o ac án , ▁O ax aca ▁and ▁Gu err ero . ▁The ▁min ing ▁and ▁working ▁of ▁met als ▁probably ▁came ▁to ▁Mes o amer ican ▁cult ures ▁from ▁the ▁south . ▁Metal ▁working ▁was ▁princip ally ▁in ▁gold , ▁silver , ▁tin ▁and ▁lead , ▁with ▁some ▁co pper ▁work ▁known ▁in ▁what ▁is ▁now ▁Mich o ac án . ▁Gold ▁was ▁generally ▁obtained ▁in ▁pow der ▁or ▁pel let ▁form ▁in ▁rivers ▁and ▁streams ▁from ▁various ▁sites ▁in ▁Gu err ero , ▁O ax aca , ▁Mich o ac án , ▁the ▁Central ▁High lands ▁and ▁the ▁May an ▁region . ▁ ▁As ▁silver ▁rarely ▁appeared ▁on ▁the ▁surface ▁it ▁was ▁almost ▁exclus