ANALISA PERHITUNGAN BIAYA PENGUPASAN OVERBURDEN PADA ALAT BULLDOZER DI PT. ALAM RAYA ABADI KABUPATEN HALMAHERA TIMUR: Dosen Program Studi Teknik Pertambangan UMMU Ternate. EJD. 2017;10(1):67-71. Accessed October 17, 2025. https://jurnal.ummu.ac.id/index.php/dintek/article/view/45