> On the basis of those observations I believe they have
> managed to land on their tops after being dropped.

I have a little difficulty understanding how many could
manage to land such a way as to break the tote.  Seems
like many another point of contact would be more likely,
but you have a point.  I'll go inspect the bevy of broke
tote planes in my shop and see what other damage I can
see.

Mike in Sacto