A request dated 19th January, 1959, was received from Australian Blue Asbestos Limited, Wittenoom Gorge, Western Australia, initiating an investigation for recovering the asbestos fibre not being recovered by the existing treatment methods. The asbestos recovered from the mill tailings preferably was to be a product which could be blended with the present standard grade fibre. However, consideration was to be given, if necessary, to the production of lower grades of fibre. Dry methods of concentration were to he used. An officer of the Mines Department visited the plant in May, 1959 and obtained a general understanding of the problems involved.