Haryono, Ahmad Fauzan, Ari yanto, and I Putu Eka Dimi Aprilianta. “Perencanaan Sequence Penambangan Batubara Pada Seam 16 Phase 2 Di PT. KTC Coal Mining & Energy, Kec. Palaran, Samarinda, Kalimantan Timur”. ReTII (March 20, 2018). Accessed May 18, 2024. //journal.itny.ac.id/index.php/ReTII/article/view/686.