  Recent and preliminary single-particle data are presented from the AGS
Experiment 866 at BNL. Emphasis is put on the transverse mass as well as the
rapidity distributions of charged pions, kaons, protons, deuterons and
anti-protons measured in the most central Au+Au collisions at an incident
kinetic energy of 10.8 AGeV. The data suggest a high degree of stopping power
present in these reactions. Applying an expanding fireball scenario to describe
the experimental distributions substantial transverse and longitudinal flow
velocities result.
