ABSTRACT
From the oldest times charcoal makers have been present in society utilizing natural resources. The mountain ranges of Northern Aragon were thickly wooded with quercus petraea and quercus ilex whose wood was very suitable for making charcoal due to its hot but slow combustion. The best time to harvest this wood was from October to March, when the sap was not rising. If possible, the cutting of wood was done when the moon was on the wane. Once the wood was cut it was left to dry for about four to six weeks.
