“Kajian Produktivitas Alat Gali Muat dan Alat Angkut dari Pit 1 untuk Pengangkutan Batu Granit di PT Aditya Buana Inter Desa Jurung Kecamatan Merawang: Techinical Study of Excavator Productivity and Tools Conveyances from Pit 1 for Transportation Granite Stone at PT Aditya Buana Inter Jurung Village Merawang District” (2019) MINERAL, 4(1), pp. 18–23. doi:10.33019/mineral.v4i1.1588.