“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, vol. 9, no. 1, pp. 6–12, Sep. 2021, doi: 10.33019/promine.v9i1.2272.