  The Canadian Automated Meteor Observatory (CAMO) detects occasional meteors
with two maxima in the image intensified CCD based light curves. We report
early results from an analysis of 21 of these events. Most of these events show
qualitatively similar light curves, with a rounded luminous peak, followed by
an almost linear sharp rise in the second peak, and a relatively rapid curved
decay of the second peak. While a number of mechanisms could explain two maxima
in the light curves, numerical modelling shows that most of these events can be
matched by a simple dustball model in which some grains have been released well
before intensive ablation begins, followed by a later release of core grains at
a single time. Best fits to observations are obtained with the core grains
being larger than the pre-released outer grains, with the core grains typically
$10^{-6}$ kg while the early release grains are of the order of $10^{-9}$ kg.
