Records show an estimated pre-World War II gold production, including alluvial sources, of about 220,000 ounces of gold.
ɹˈɛkɚdz ʃˈoʊ ɐn ˈɛstᵻmˌeɪɾᵻd pɹˈiːwˈɜːld wˈɔːɹ ɹˌoʊmən tˈuː ɡˈoʊld pɹədˈʌkʃən, ɪŋklˈuːdɪŋ ɐlˈuːvɪəl sˈoːɹsᵻz, ʌv ɐbˌaʊt tˈuːhˈʌndɹɪd twˈɛnti,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ ˈaʊnsᵻz ʌv ɡˈoʊld.