“Optimalisasi Unit Peremukan Dalam Pencapaian Target Produksi 60.000 Ton Bulan Batu Granit Pada Pt Vitrama Properti Di Desa Air Mesu Kabupaten Bangka Tengah: Optimalization of Crushing Plant in Achieving The Production Target of 60.000 Tons Month Granite in PT Vitrama Properti at Air Mesu Village Central Bangka Regency”. MINERAL, vol. 3, no. 1, Jan. 2020, pp. 8-15, https://doi.org/10.33019/mineral.v3i1.1569.