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Putrawiyanta IP, Nadeak R, Nababan I. PENGAMATAN PRODUKTIVITAS ALAT GALI MUAT DAN ANGKUT PADA KEGIATAN OVERBURDEN REMOVAL DAN COAL GETTING: OBSERVATION OF THE PRODUCTIVITY OF LOADING AND TRANSPORTING EQUIPMENT IN OVERBURDEN REMOVAL AND COAL GETTING ACTIVITIES. JTP [Internet]. 2024 Aug. 1 [cited 2024 Nov. 19];24(2):80-5. Available from: https://e-journal.upr.ac.id/index.php/JTP/article/view/14875