  One purpose of this meeting is to assess the physics potential of HERA-N
Stage I. To develop a reasonable perspective, it is useful to look at other
spin experiments. For completeness, this report discusses some of the single
spin physics that has appeared in studies relating to the Relativistic Heavy
Ion Collider (RHIC). (Talk presented during the meeting on ``The Measurement of
Singly Polarized Collisions at HERA'' held at DESY-Zeuthen, Germany, 31
August-1 September 1995.)
