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Kajian Produksi Ball Mill Dalam Menentukan Efektivitas Penggerusan Bijih Timah Primer Di CV Persada Tambang Intitama TK 4.218 Paku Kabupaten Bangka Selatan: Study of Ball Mill Production in Determining the Effectiveness of Primary Tin Ore Grinding at CV Persada Tambang Intitama TK 4.218 Paku, South Bangka. mineral [Internet]. 2020 Oct. 1 [cited 2026 Apr. 13];5(2):1-6. Available from: https://journal.ubb.ac.id/index.php/mineral/article/view/3066