The paper describes the work undertaken during a pilot scale field trial of the ion flotation process, as applied to the recovery of gold. In this process the gold cyanide anions of a heap Leach liquor are adsorbed, through the use of a cationic surface active reagent, on the surface of rising air bubbles and recovered as part of a froth product concentrate. The principal objectives of the trial were to establish the technical feasibility of long-term reagent recycle and to quantify the recyclability of the reagent, an essential specification in the determination of the economic viability of the technology which could not be sensibly established at the laboratory scale. The trial involved a total of 13 reagent recycle stages. The results indicated that the recyclability of the reagent is about 80%.