“Pengaruh Fragmentasi Terhadap Digging Time Dan Produktivitas Excavator Liebher R9400 Pada Area Peledakan PT Dahana Site Adaro: The Effect Of Fragmentation On The Digging Time And Productivity Of Liebher R9400 Excavator At the Blasting Area Of PT Dahana site Adaro”, mineral, vol. 5, no. 2, pp. 7–11, Oct. 2020, doi: 10.33019/mineral.v5i2.3067.