Methods and apparatus for processing corn into one or more corn products. With this configuration, the space in which powder toner is present is isolated from the space outside the isolation wall. The graphite material is defined by edge sites at the interface with the silicon. Magnetic forces between respective ones of the first and second pluralities of magnetic elements may tend to retain the respective first and second ends of the first and second cables proximate one another. The system may perform this diagnostic function in medical applications andor security applications.