S. Depari RK, Trides T, Magdalena H, Oktaviani R, Litha Respati L. KAJIAN BIAYA OPERASI PENGEBORAN DAN PELEDAKAN OVERBURDEN PADA OPERASI PENAMBANGAN BATUBARA PT. MITRA ABADI MAHAKAM PROVINSI KALIMANTAN TIMUR: STUDY OF OVERBURDEN DRILLING AND BLASTING OPERATION COSTS COAL MINING OPERATIONSPT. MITRA ABADI MAHAKAM EAST KALIMANTAN PROVINCE. JTP [Internet]. 2025 Aug. 4 [cited 2025 Oct. 24];25(2):60-6. Available from: https://e-journal.upr.ac.id/index.php/JTP/article/view/19778