“Kajian Sistem Penyaliran Tambang Bawah Tanah Pada PT Allied Indo Coal Jaya Sawahlunto Sumatera Barat: Underground Mining Dewatering System Review At PT Allied Indo Coal Jaya Sawahlunto West Sumatra”. 2021. MINERAL 6 (2): 1-6. https://doi.org/10.33019/mineral.v6i2.3086.