  We study the statistics of the power flux into a collection of inelastic
beads maintained in a fluidized steady-state by external mechanical driving.
The power shows large fluctuations, including frequent large negative
fluctuations, about its average value. The relative probabilities of positive
and negative fluctuations in the power flux are in close accord with the
Fluctuation Theorem of Gallavotti and Cohen, even at time scales shorter than
those required by the theorem. We also compare an effective temperature that
emerges from this analysis to the kinetic granular temperature.
