Preliminary design has commenced for 4 x headworks systems installed by Contraflow for the Rio Tinto Mesa J borefield expansion project. KAPP will be providing logic design, PLC programming, SCADA programming and Testing for the system to Rio Tinto standards. The control system includes multiple Schneider Modicon M340 PLCs communicating via fibre to a central location interconnected wirelessly to CitectSCADA in the plant.