“Kajian Efektifitas Kerja Operator Dan Kondisi Alat Pada Front Penambangan Tambang Besar Pemali PT Timah Tbk: Study on the Effectiveness of Operators and Equipment Conditions at Pemali Mining Front PT Timah Tbk”. MINERAL 6, no. 1 (April 1, 2021): 25–30. Accessed November 7, 2025. https://journal.ubb.ac.id/index.php/mineral/article/view/3082.