PEMETAAN KLASIFIKASI ROCK QUALITY DESIGNATION (RQD) TAMBANG BAWAH TANAH “DMLZ” PT.FREEPORT INDONESIA. Jurnal Teknik AMATA, [S. l.], v. 2, n. 1, p. 14–16, 2021. DOI: 10.55334/jtam.v2i1.121. Disponível em: https://jurnalpoltekam.or.id/index.php/Amata_amamapare/article/view/44. Acesso em: 7 jul. 2025.