“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, vol. 6, no. 2, pp. 13–17, Oct. 2021, doi: 10.33019/mineral.v6i2.3088.