Desmawita, Hanafi, Oktavia M. Perencanaan Desain Pit Limit di PT. Era Perkasa Mining Kecamatan Peranap Kabupaten Indragiri Hulu Provinsi Riau. JTK [Internet]. 2024Aug.13 [cited 2025Jan.31];11(02 ,MARET):12-21. Available from: https://mail.online-journal.unja.ac.id/jtk/article/view/34673