Target Gold Mine in South Africa, was commissioned as a brownfields operation starting in November 2001. Target took the decision to pioneer the use in Southern Africa of Gekko Systems' InLine Leach Reactor to treat gravity concentrate and the first ILR100BA produced by Gekko Systems was installed at Target gold mine The gravity circuit was afforded a low priority by the commissioning engineers during start up, as the plant's leach and adsorption circuits were designed to handle a feed grade of approximately 12 ppm. During the commissioning of the Inline Leach Reactor (ILR) minor problems were encountered in the form of pipe blockages, process water issues and low gold dissolutions. Once these commissioning issues were resolved jointly between Gekko and Target, the unit began achieving consistently good recoveries, allowing the manual tabling operations to cease, saving the company significant costs in toll treatment of table tails and improving refinery security. Once the unit was commissioned, optimisation test work followed, including; reducing reagent consumptions, tailoring of process time to suit plant operations and comparisons between alternative oxidants. The ILR now achieves consistent recoveries in excess of 98% at around US$0.70/oz recovered, with an additional recovery of 4871 ounces since commissioning resulting in a capital payback of approximately six weeks.