PENGARUH DIGGING TIME ALAT GALI MUAT TERHADAP FRAGMENTASI HASIL PELEDAKAN BATUBARA. PROCEEDINGS OF NATIONAL COLLOQUIUM RESEARCH AND COMMUNITY SERVICE, [S. l.], v. 4, 2021. DOI: 10.33019/snppm.v4i0.2161. Disponível em: https://www.journal.ubb.ac.id/index.php/snppm/article/view/2161. Acesso em: 4 aug. 2026.