Pocerattu, G. E. ., and Y. G. . Pangkung. “STAGGERED CREW PRODUCTION EVALUATION IN DEEP ORE ZONE UNDERGROUND MINING PT. FREEPORT INDONESIA: EVALUASI PRODUKSI STAGGERED CREW DI TAMBANG BAWAH TANAH DEEP ORE ZONE PT. FREEPORT INDONESIA”. INTAN Jurnal Penelitian Tambang, vol. 2, no. 2, Feb. 2022, pp. 133-42, doi:10.56139/intan.v2i2.35.