  We review recent Z^0 physics results from SLD that use the Cherenkov Ring
Imaging Detector for charged particle identification. The performance of the
detector and likelihood method are described briefly. Several hadronization
measurements are presented, including identified hadron production in events of
different primary flavors, leading hadron production, and new correlation
studies sensitive to details of both leading and nonleading hadron production.
Identified K^+- have been used in conjunction with precision vertexing to study
charmless and doubly charmed B-hadron decays. This combination has also been
used to tag b, b-bar, c and c-bar jets, yielding precise measurements of
B^0-B^0bar mixing and of the asymmetric couplings A_b and A_c. Identified K^+-
and Lambda^0 have been used to tag s and s-bar jets, yielding a measurement of
A_s. The clean identified particle samples provided efficiently by the CRID
allow the purities of these tags to be measured from the data, an essential
ingredient for precision physics.
