MODIFIKASI MATA BOR HAND AUGER BERBAHAN BEKAS SPRING MOBIL UNTUK KEGIATAN SAMPLING ALUVIAL DI KABUPATEN KETAPANG. JUMPE : Journal of Mining, Mineral Processing, and Energy, [S. l.], v. 1, n. 01, p. 9–13, 2023. DOI: 10.54866/jumpe.v1i01.1257. Disponível em: https://jurnal.politap.ac.id/index.php/jumpe/article/view/1257. Acesso em: 8 dec. 2025.