  The NA35 experiment used several independent methods to determine the strange
particle production in p+S and S+A collisions. The different techniques show
consistent results. Strangeness conservation in full phase space is used as an
additional check of the consistency of the data.
  On the base of the analysis in full phase space it could be shown that
strangeness conservation is fullfilled. The NA35 K$^0_S$ in S+S and S+Ag are
consistent with the NA44 results for K$^+$ and K$^-$. The results of the NA36
collaboration for S+Pb collisions were extrapolated to full phase space. The
comparison with the NA35 results shows more than two times lower yields. The
ratio of $\Lambda$ to $\overline{\Lambda}$ at midrapidity of NA36 is
inconsistent with the high baryon density determind by NA35. The strange
particle production is compared to the abundance of non strange particles,
especially negatively charged pions which are measured in full phase space in
the same experiment. A clear enhanced strange hadron production relative to
$\pi^-$ is observed in S+Ag collisions compared to p+S reactions at the same
energy. The K$^0_S$ multiplicity in full phase space per negative hadron
(h$^-$) in S+S, S+Ag and Pb+Pb is enhanced by about a factor 1.6 compared to
N+N and p+S collisions. The NA36 result for the K$^0_S$ multiplicity per h$^-$
in S+Pb is below the N+N value.

High Energy Physics - Phenomenology