Evaluasi Titik Impas Biaya Peledakan Batu Granit Bulan Januari 2017 Melalui Perbaikan Metode Peledakan Pada PT Vitrama Properti Di Desa Air Mesu Kabupaten Bangka Tengah: Evaluation Break Even Point OF Granite Explosion Cost In January 2017 Through Improved Blasting Methods At PT Vitrama Properti In Air Mesu Village District Of Bangka Tengah. mineral [Internet]. 2020 Jan. 30 [cited 2026 Apr. 19];2(2):69-77. Available from: https://www.journal.ubb.ac.id/index.php/mineral/article/view/1561