Cremator with seconadary hearth

That expensive casket could be up to 50% of what is left behind. When your body and bones have been consumed, there may be a fair bit of charcoal particularly if you were incinerated in a large Oak or Cherry casket.




Since to burn out the charcoal from your casket will require a large amount of excess air that cools down the cremator - wasting stored heat which could have been used to incinerate the next person - the operator may not bother to finish burning the remains of the casket.