Citation: Wpc. Duyvesteyn et Bj. Sabacky, AMMONIA LEACHING PROCESS FOR ESCONDIDA COPPER CONCENTRATES (REPRINTEDFROM EXTRACTIVE METALLURGY OF COPPER, NICKEL AND COBALT, VOL 1, 1993), Transactions - Institution of Mining and Metallurgy. Section C. Mineral processing & extractive metallurgy, 104, 1995, pp. 125-140