Supriyadi, Haryono AF, Razak S, Abdulfattah F, Manaqib M. OPTIMASI PIT TAMBANG TERBUKA BATUBARA MENGGUNAKAN METODE LERCHS-GROSSMANN: OPEN-PIT COAL MINE OPTIMIZATION USING THE LERCHS-GROSSMANN METHOD. JTP [Internet]. 2026 Aug. 15 [cited 2026 Aug. 28];26(2):52-60. Available from: https://e-journal.upr.ac.id/index.php/JTP/article/view/26761