Elias, Deddy H., and Indra Birawaputra. (2022) 2023. “SUPPORT JOB TIME AND MOTION STUDY AT PRODUCTION SITE PT. ANTAM (PERSERO) TBK UNPE PONGKOR MAIN CIGUHA MINE: TIME AND MOTION STUDY PEKERJAAN PENYANGGAAN PADA LOKASI PRODUKSI TAMBANG CIGUHA UTAMA PT. ANTAM (PERSERO) TBK UBPE PONGKOR”. INTAN Jurnal Penelitian Tambang 1 (1):1-7. https://doi.org/10.56139/intan.v1i1.4.