Sitanggang, Denny Boy, and Yanto Yanto. “Desain Geometri Lereng Penambangan Batubara Terbuka Serta Mitigasi Risiko K3 Dan Lingkungan Di Pit X3 PT. DBS”. Indonesian Journal of Innovation Multidisipliner Research 4, no. 3 (September 24, 2026): 15561–15569. Accessed October 9, 2026. https://multidisipliner.org/ijim/article/view/2709.