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“Evaluasi Kualitas Batubara dari Front Penambangan Hingga Stockpile di Pit 1 Banko Barat PT Bukit Asam Tbk Tanjung Enim: Evaluation of Coal Quality from Mining Front to Stockpile at Pit 1 Banko Barat PT Bukit Asam Tbk Tanjung Enim”, mineral, vol. 4, no. 1, pp. 1–7, Apr. 2019, doi: 10.33019/mineral.v4i1.1586.