How do Mummies stay in their coffins and not turn to dust?

The process of making a mummy required the removal of vital organs, stuffing the body with dried herbs and other things, letting it dry and then wrapping it. It was placed in a coffin within a coffin. All of this preserves the body and makes it last longer through time.

The process of mummification involves drying the body so mold and bacteria will not cause it to decompose. That is whey Egyptian mummies last in their coffins and do not turn to dust.