The present invention provides a system and method for recovering a precious metal from a geologic material. A virtual player loyalty card can be created by associating an existing physical player loyalty card with a newly created mobile loyalty card account. The rotor has at least two portions and an annular engagement flange extending in an axial direction having a groove on the radial side thereof. Still more preferably, each constituent shares at least 95% homology. The memory cells in each block are arranged in rows.