Please do not read on if you do not want to know too much about cremation.My mother used to manage a crematorium so I had a look behind the scenes. The coffins for burning are generally chipboard with a thin veneer & plastic handles to save money. As we were walking through my mother switched on a spherical machine slightly smaller than a football, whcih turned out to be a 'bone grinder' as everything does not automatically burn down to the fine ash you receive in the urn. There were several urns around the floor & being fairly clumsy I had to be fairly careful not to kick them over. And I can confirm that Princess Di was not secretly cremated as I read somewhere once.