“ANALISA PERHITUNGAN BIAYA PENGUPASAN OVERBURDEN PADA ALAT BULLDOZER DI PT. ALAM RAYA ABADI KABUPATEN HALMAHERA TIMUR: Dosen Program Studi Teknik Pertambangan UMMU Ternate”, EJD, vol. 10, no. 1, pp. 67–71, Mar. 2017, Accessed: Oct. 17, 2025. [Online]. Available: https://jurnal.ummu.ac.id/index.php/dintek/article/view/45