The WA94 experiment ( Athens,Bari,Bergen,Birmingham,Bratislava,CERN, Kosice,Legnaro,Madrid,Padua,Paris-College de France,Serpukhov,Strasbourg and Trieste ) was designed to study strange particle production in S-S interactions at 200 GeV per nucleon, and to compare the results with p-S interactions. Enhanced production of multistrange baryons and antibaryons is predicted to be a good indicator of Quark Gluon Plasma (QGP) formation. The lambda, antilambda, ximinus and antiximinus spectra have been fully corrected for acceptance, reconstruction efficiency and feed-down, allowing the transverse mass and the relative production ratios to be determined. Charged koans have also been identified in S-S interactions. The values obtained for the inverse slopes of the transverse mass distributions are some 15 MeV lower than those obtained in S-W interactions in an equivalent centre- of-mass rapidity interval. The particle production ratios are very similar to those obtained by WA85 for S-W interactions, and again the antiximinus/antilambda ratio is considerably higher than the p-p value. These ratios provided the best evidence for QGP formation before data from lead-lead interactions became available. A second period of data taking used the Omega RICH in conjunction with a telescope built from silicon microstrips. The operation of this silicon telescope also provided valuable experience for the purpose-built silicon telescope later used in the WA97 experiment to study lead-lead interactions. -------------------------------------------------------------------