2021. Analisis Kebutuhan Airflow Budget Di Level Extraction Pada Tambang Bawah Tanah Di Area Deep Mill Level Zone (Dmlz) PT. Freeport Indonesia Timika Papua: Analysis Of Airflow Budget Needs In Extraction Level Of Underground Dmlz Airflows Pt Freeport Indonesia District Tembagapura, District Mimika, Province Of Papua. PROMINE. 9, 1 (Sep. 2021), 6–12. DOI:https://doi.org/10.33019/promine.v9i1.2272.