Desmawita, Hanafi, and Marisa Oktavia. “Perencanaan Desain Pit Limit Di PT. Era Perkasa Mining Kecamatan Peranap Kabupaten Indragiri Hulu Provinsi Riau”. JTK (Jurnal Teknik Kebumian) 11, no. 02 ,MARET (August 13, 2024): 12-21. Accessed November 26, 2024. https://online-journal.unja.ac.id/jtk/article/view/34673.