Putri KS, Noor I, Ramadhan AAG, Saharani S, Laili RT, Fahrezi MI, et al. Evaluation of Coal Mining Operation Performance by Frequency and Severity Rate of Accidents. Technium [Internet]. 2025 Sep. 29 [cited 2026 Apr. 17];30:246-51. Available from: https://techniumscience.com/index.php/technium/article/view/13226