Anglo Coal SA has approved building of houses for its employees through the production of gypsum (solid waste - a by-product of the Emahlakleni purification process). The committee found that the chief characteristic of the plant; was the use of Reverse Osmosis to concentrate the water and produce supersaturated brine from which the salts could be released in a simple precipitation process. The results of such a process were high recovery of water, low operating costs and minimum waste. The plant has about 35 employees, each being actively involved in maintaining the plant operability. A permanent training officer has been employed to ensure that there is no lapse in skills amongst the staff and to deal with matters of high turnover as and when such arises.