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We set a preliminary 95% C.L. exclusion on the oscillation frequency of B{sub s}{sup 0}-{bar B}{sub s}{sup 0} mixing using a sample of 350,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC during the 1997-98 run. The analyses determine the b-hadron flavor at production by exploiting the large forward-backward asymmetry of polarized Z{sup 0} {yields} b{bar b} decays as well as information from the hemisphere opposite that of the reconstructed B decay. In one analysis, B decay vertices are reconstructed inclusively with a new topological technique, and separation between B{sub s}{sup 0} and {bar B}{sub s}{sup 0} decays exploits the B{sub s}{sup 0} {yields} D{sub s}{sup -} cascade charge structure. In the other analysis, semileptonic decays are selected and the B decay point is reconstructed by intersecting a lepton track with the trajectory of a topologically reconstructed D meson. The two analyses are combined with a third analysis described elsewhere to exclude the following values of the B{sub s}{sup 0}-{bar B}{sub s}{sup 0} mixing oscillation frequency: {Delta}m{sub s} &lt; 5.2 ps{sup -1} and 11.3 &lt; {Delta}m{sub s} &lt; 14.2 ps{sup -1} at the 95% confidence level

Time Dependent B{sub s}{sup 0}-{bar B}{sub s}{sup 0} Mixing Using Inclusive and Semileptonic B Decays at SLD