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 [Internet]. 2020 Oct. 1 [cited 2025 Nov. 7];5(2):7-11. Available from: https://journal.ubb.ac.id/index.php/mineral/article/view/3067