Okay off to the mad-chem lab after reading up on crematorium sites first. Thanks to all who let me know.
I planned on either placing the bones on an unglazed tile and/or not glazing the entire bone(s)
I'll upload beautiful pics (I'm a photographer) if everything doesn't explode, melt, or incinerate. hehe
Contrary to popular belief, the cremated remains are not ashes in the usual sense. After the incineration is completed, the dry bone fragments are swept out of the retort and pulverized by a machine called a cremulator to process them into "ashes" or "cremated remains", although pulverization may also be performed by hand. This leaves the bone with a fine sand like texture and color, able to be scattered without need for mixing with any foreign matter, though the size of the grain varies depending on the cremulator used. Their weight is approximately 4 pounds (1.8 kg) for adult human females and 6 pounds (2.7 kg) for adult human males. There are various types of cremulators, including rotating devices, grinders, and older models using heavy metal balls.