This book focuses on the magnetic field, recovery of precious metal and the design of an integrated units and the scale up. This book consists of seven chapters concerning the recovery of copper, treating of industrial waste water which consider a major environmental problem for many industries and magnetic Field. Chapter one includes general introduction about environmental pollution . While chapter two explains the waste water, heavy metals and its effect onto the environment, Techniques of removal of heavy metals from waste water, kinetic and mechanism of cementation process. Chapter three...