  Results of the production of Xi and Xi-bar hyperons in central Pb+Pb
interactions at 158 GeV/c per nucleon are presented. This analysis utilises a
global reconstruction procedure, which allows a measurement of 4pi integrated
yields to be made for the first time. Inverse slope paramters, which are
determined from an exponential fit to the transverse mass spectra, are shown.
Central rapidity densities are found to be 1.49 +- 0.08 and 0.33 +- 0.04 per
event per unit of rapidity for Xi and Xi-bar respectively. Yields integrated to
full phase space are 4.12 +- 0.02 and 0.77 +- 0.04 for Xi and Xi-bar. The ratio
of Xi-bar/Xi at mid-rapidity is 0.22 +- 0.03.
