1. Ecstall concentrator;Amsden;C.I.M. Bull.,1974
2. Spectroscopic adsorption measurements with metal ion solutions on powder surfaces;Berl;Kollid-Z.,1933
3. Beneficiation practice at the Tsumeb Concentrator;Boyce,1970
4. Method of saving floating materials in ore separation;Bradford,1886
5. Flotation theory and mill control;Bushell,1962