Chinalco is investing $3 billion to begin open-cast mining operations, within three to four years, in Morococha District, Peru.
tʃaɪnˈælkoʊ ɪz ɪnvˈɛstɪŋ dˈɑːlɚ θɹˈiː bˈɪliən tə bɪɡˈɪn ˈoʊpəŋkˈæst mˈaɪnɪŋ ˌɑːpɚɹˈeɪʃənz, wɪðˌɪn θɹˈiː tə fˈoːɹ jˈɪɹz, ɪn mˈɔːɹəkˌɑːtʃə dˈɪstɹɪkt, pɚɹˈuː.