Abstract
A resonance of the type postulated early by Korringa and Gerritsen (1953) is found in the energy dependence of conduction electron scattering from interaction spin pairs. Added to the well known effect of spin freezing, this resonance drastically reduces Kondo's giant TEP of the free spin limit. A sign change can be caused by antiferromagnetic interactions in systems with low Kondo temperature. For the average interaction effect in a random alloy a scaling in C/T is derived. Spin changes and low temperature maxima in the experimental TEP of AuMn and CuMn are interpreted.