“Analisis Manfaat Biaya Penerapan Intermediate Stockpile Di Nickel Hill PT Vale Indonesia Tbk”. Jurnal Geomine 7, no. 02 (August 31, 2019): 146–156. Accessed June 27, 2025. https://jurnal.fti.umi.ac.id/index.php/JG/article/view/1347.