Haya, F.D.N., Jolo, A. and Yanny, Y. 2022. Analysis of Productivity Synchronization of Barge Transportation Equipment and Crane Loading on Nickel Ore Delivery Activities in PT. Antam Nickel UBP North Maluku: Analisis Sinkronisasi Produktivitas Alat Angkut Tongkang dan Alat Muat Crane pada Kegiatan Pengapalan Nickel Ore di PT. Antam UBP Nikel Maluku Utara. JURNAL GEOCELEBES. 6, 2 (Oct. 2022), 179 -. DOI:https://doi.org/10.20956/geocelebes.v6i2.22043.