On Thu, 14 Jun 2007 15:32:55 -0700, Weatherlawyer
wrote:

It was polystyrene?

Hard to imagine that being used. Are you sure it wasn't vermiculite, a
safely inert, natural mica type of earth?

It was very popular for many applications particularly roofs.

I bought several very large bags from the factory and gave one to my
neighbour. She put it in her lounge. Her 10 year old daughter came
home from school, hooted with delight and took a run and jumped onto
the bag.

It took about 2 years before they eventually cleared the stuff from
the house. )