The reprocessing object is one of the simplest in bright. In a technology nonspecific way, it performs separations on an input material. Reprocessing facilities have nominal separation efficiencies (SE) for each element (and possibly nuclide). These SE are valued on the range [0,1] and represent the fractional portion of an element that is recovered in the reprocessing output (mat_prod).
The SE, if left unspecified, default to full recovery (a value of 1). Currently, Reprocess does not contain a mat_tail attribute that corresponds to material not recovered in mat_prod.