Putrawiyanta, I. P., R. . Nadeak, and I. . Nababan. “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”. JURNAL TEKNIK PERTAMBANGAN, vol. 24, no. 2, Aug. 2024, pp. 80-85, doi:10.36873/jtp.v24i2.14875.