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We present preliminary STAR results on measurements of multi-strangeparticles $\Xi$, $\Omega$ and their anti-particles from Au+Au and Cu+Cu at$\sqrt{s_{NN}}=62.4$ GeV collisions. In order to better understand the role ofstrangeness enhancement in nucleus-nucleus collisions and its scalingproperties with system size, we compare the results from Au+Au and Cu+Cureactions for different event centrality classes. Strangeness enhancement isdiscussed in the context of multi-strange to pion ratios. Finally,$\Omega/\phi$ ratio is shown for different systems and energies for asystematic study.

Multi-strange particle production in relativistic heavy ion collisions at $\sqrt{s_{NN}}=62.4$ GeV