“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”. MINERAL, vol. 4, no. 1, Apr. 2019, pp. 18-23, https://doi.org/10.33019/mineral.v4i1.1588.