The environmentally friendly and energy efficient hydrometallurgical refinery process has been developed and improved over the years. It is currently manufactured in Turkey. This is based upon the aqua regia process and since there is a minimum of heating processes, gold losses are minimized. Previously in the industry, the Haber or Chlorine process was favoured, however, the capital cost is now typically more than fourfold for similar sized capacity. Due to the relative simplicity of the hydrometallurgical process, projects can be implemented in 9-12 months as opposed to a few years. Proposals have also been tabled to large gold mining companies, however, due to their internal project management requirements, and other assurance type processes, the cost of a hydrometallurgical refinery can be doubled, as well as the implementation schedule.