Note that the oaks that we find have around two or more feet out of the same strain. This indicates us that the main trunk was cut, causing this effect on top of the oak, which facilitated a faster growth of these feet that were alternately cut down to use their wood, either as firewood or to make coal. If we look at the blackened colour of the land in the flattest section of the forest, we will have a clue of the presence of a coal production square in this part of the forest.
The charcoal production consisted of the wood being turned into charcoal by incomplete combustion. The charcoaling process included several phases, such as cutting and collecting the wood, construction of the pile, ignition, firing the shots and the deforestation. The carbonization process could last between one week, the shortest and smallest, and two months, the longest and largest, and one same coaler could be working on 7 or 8 coalers at the same time.