2020. 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. 5, 2 (Oct. 2020), 7–11. DOI:https://doi.org/10.33019/mineral.v5i2.3067.