Y. B. . Sirwutubun, B. . Triyanto, and J. R. . Horman, “EVALUATION OF THE IMPACT OF BLASTING ACTIVITIES VERTICAL BENCHING OF GROUND SUPPORT PT. FREEPORT INDONESIA: EVALUASI DAMPAK KEGIATAN PELEDAKAN VERTICAL BENCHING TERHADAP GROUND SUPPORT PT. FREEPORT INDONESIA”, JISTECH, vol. 6, no. 1, Jan. 2023.