A paragraph on this page describing cremation ...
HowStuffWorks "The Cremation Process"
"Once the body is completely burned, the chamber is then cooled and the cremated remains, which are often still recognizable as human skeletal remains, are swept with a long-handled hoe or wire-bristle broom into a tray. A powerful hand-held magnet is run through the ash to pick up metal parts left behind, such as fillings, plates and hip replacements, which can interfere with the grinding process. The metal parts are disposed with other biological material or recycled [source: Ellenberg]. The bones and remnants are put into a grinder, or cremulator, that uses ball bearings or rotating blades, like a blender. The remains are pulverized and poured into a plastic, lined container or an urn of the family's choice."
