Analisis Ekonomis Sewa atau Beli Alat Excavator pada Kegiatan Produksi Bijih Timah PT Prima Timah Utama, Desa Cit, Kabupaten Bangka: Economic Analysis of Rent or Buy Excavator for Tin Production at PT Prima Timah Utama, Cit Village, Bangka Regency. MINERAL, [S. l.], v. 6, n. 2, p. 13–17, 2021. DOI: 10.33019/mineral.v6i2.3088. Disponível em: https://www.journal.ubb.ac.id/index.php/mineral/article/view/3088. Acesso em: 19 apr. 2026.