The jig plant at Sishen Mine consisting of 24 jigs was in full production towards the end of 2009 providing an equivalent of 13 Mt product per annum. The jig plant was designed to receive lower grade material from the mine that needs a cut density greater than 4000 kg/m3 to be able to produce the product to specification. The first feed material was fed into the plant during August 2007.Significant commissioning issues were solved before the jig plant reached its desired reliability and process efficiency.Jigging is a process of particle stratification in which the particle rearrangement results from an alternate expansion and compaction of a bed of particles by pulsating fluid flow. The rearrangement results in layers of particles that are arranged by increasing density from top to bottom of the bed. The particles, in addition to the vertically expanded and compacted bed motion, move continuously, horizontally across the supporting screen deck. Following the particle stratification, the product and waste are removed at the end of the Jig bed under controlled conditions. The accuracy of the dissymmetric stratification and the effective removal of product and waste depend on the control parameters used and the mechanical condition of various equipment used.This presentation will touch on some of the control parameters and mechanical conditions affecting the separation efficiency and the changes made during the commissioning period to achieve the goals set for the plant.*This is an abstract only. No full paper was prepared for this abstract.* CITATION:Myburgh, H A, 2013. Sishen jig plant operation and performance, in Proceedings Iron Ore 2013 , pp 451-452 (The Australasian Institute of Mining and Metallurgy: Melbourne).