Today the mine is predominantly exploited in an open pit quarry but several of the many underground mines (deep and extending over several km) still remain viable.
tədˈeɪ ðə mˈaɪn ɪz pɹɪdˈɑːmɪnəntli ɛksplˈɔɪɾᵻd ɪn ɐn ˈoʊpən pˈɪt kwˈɔːɹi bˌʌt sˈɛvɹəl ʌvðə mˈɛni ˈʌndɚɡɹˌaʊnd mˈaɪnz dˈiːp ænd ɛkstˈɛndɪŋ ˌoʊvɚ sˈɛvɹəl kˌeɪˈɛm stˈɪl ɹᵻmˈeɪn vˈaɪəbəl.