Cremation
QUOTE
The cremation occurs in a crematory (or crematorium), consisting of one or more
cremator furnaces or cremation retorts for the ashes. A cremator is an
industrial
furnace capable of generating temperatures of 870–980 °C (1,598–1,796 °F) to
ensure disintegration of the corpse. A
crematorium
may be part of
chapel or a
funeral
home, or part of an independent facility or a service offered by a
cemetery.
Modern cremator fuels include
natural
gas and
propane. However,
coal and
coke
were used until the early 1960s. Modern cremators have adjustable control
systems that monitor the furnace during cremation. These systems automatically
monitor the interior to tell when the cremation process is complete, after which
the furnace shuts down automatically. The time required for cremation thus
varies from body to body, and in modern furnaces may be as fast as one hour per
45 kilograms (99 lb) of body weight.
UNQUOTE
This is quite hot. A typical
domestic oven for cooking would use about 3 kilowatts. Crematoria would have to
use a good deal more. 10 - 20 kW sounds like a practical minimum with an hour
and half to do what it takes. Doing Jews in Auschwitz implies coal. 6 million
implies implies 6,000,000 as much.