Indra Nuryanneti, Putra Putra, Sarmidi Sarmidi, Randy Dinata. Perbandingan Perbandingan Produktivitas dan Biaya Operasional Pompa Tambang Engine dan Listrik Di Tambang Air Laya PT. Bukit Asam, Tbk. jits [Internet]. 2025 Oct. 10 [cited 2026 Oct. 21];3(1):203-8. Available from: https://jurnal.akipba.ac.id/index.php/JITS/article/view/68