retort as quickly as possible to avoid heat loss through the top-opening door. Some crematoria allow relatives to view the charging. This is sometimes done for religious reasons, such as in traditional Hindu funerals.
A body to be cremated is first placed in a container for cremation, which can be a simple corrugated cardboard box or a wooden casket. Most casket manufacturers provide a line of caskets specially built for cremation. Another option is a cardboard box that fits inside a wooden shell designed to look like a traditional casket. After the funeral service the interior box is removed from the shell before cremation, permitting the shell to be reused. Funeral homes may also offer rental caskets, which are traditional caskets used only for the duration of the services, after which the body is transferred to another container for cremation. Rental caskets are sometimes designed with removable beds and liners, replaced after each use.
In the United Kingdom, the body is not removed from the coffin, and is not placed into a container as described above. The body is cremated with the coffin, which is why all UK coffins that are to be used for cremation must be made of combustible material. The Code of Cremation Practice forbids the opening of the coffin once it has arrived at the crematorium, and rules stipulate that it must be cremated on the same day as the funeral service. Jewelry is strongly advised to be removed before the coffin is sealed, as the coffin cannot be opened once it has been received at the crematorium. After the cremation process has been completed, the remains are passed through a magnetic field to remove any metal, which will be interred elsewhere in the crematorium grounds.
In Australia, the