Evaluasi Kesesuaian Perhitungan Cadangan Secara Manual Terhadap Penggalian Nyata Bijih Timah Blok Realisasi Pada BWD Kundur 1 PT Timah Tbk Di Laut Penganak Bangka Barat: Evaluation of the Conformity of Manually Reserved Calculations on Real Excavation of Tin Ore of Realized Blocks at BWD Kundur 1 PT Timah Tbk In the Sea of West Bangka Penganak. mineral [Internet]. 2019 Apr. 30 [cited 2026 Apr. 19];4(1):44-9. Available from: https://www.journal.ubb.ac.id/index.php/mineral/article/view/1594