  We study Final State Interaction effects (FSI) in inclusive electron
scattering of several GeV from nuclear matter. We consider separately the cases
of 'elastic' and 'inelastic' knockout of respectively a nucleon and a
non-nucleonic particle. For the former category FSI have been calculated, using
the first cumulant approximation of a relativistic generalization of the theory
of Gersch et al, including intermediate NN states states with produced hadrons.
We also discuss a formal expression for the first cumulant approximation on the
basis of the PWIA. FSI between an inelasticlly knocked-out particle and core
nucleons are neglected. We present two scaling analyses of the data, from which
the above 'inelastic' contributions have been been removed. The data expressed
in a relativistic West variable show scaling of a much better quality than the
same in the IA scaling variable. Predictions for inclusive cross sections in
the two first cumulant versions are presented and discussed. We make a critical
comparison of the above with the IA approach of Benhar et al and their results.
