Fatubun, J. E. A. F.; Pangkung, Y. G. . ANALYSIS ON SAMPLING AND SAMPLE PREPARATION BASED ON NICKEL CONTENT TEST RESULTS, PT. HALTIM MINING, EAST HALMAHERA REGENCY, NORTH MALUKU PROVINCE: ANALISIS PENGAMBILAN DAN PREPARASI SAMPEL BERDASARKAN HASIL PENGUJIAN KADAR NIKEL PADA PT. HALTIM MINING KABUPATEN. Program Studi S1 Teknik Pertambangan Universitas Papua 2022, 1, 44-52.