Strictly related to blacksmithing, ” cărbunăritul„ was another craft developed in Beiuș Depression. This craft has to be understood as the iron ore reduction in furnaces and the iron processing carried out in specialist centers or in the existing forges in all the rural communities, ie charcoal obtained out of the wood used by the smiths, by guided combustion.
Land records in 1589 and 1600 as well as the "Inventory of smiths and from Beiuș castle" in 1600, confirm the existence of „cărbunărit„, confirm the obligations of serfs imposed by their lords to provide this specialized work. In 1600, 11 cities with 312 heads of families were obliged to serve in Vaşcău smelter. Among them, those from the village of Boi - Vaşcău who, "since the iron mallet (malleus forrens) exists, do not usually provide any work, except for carrying coal to melt iron, cutting wood, burning the coal. If the do not carry coal, the tax is one florin, and they must carry the coal neglected ". The villages of Foltesti (Sârbesti), Valea Mare de Codru, Vărzarii de Sus şi de Jos, had the same obligations. For the copper smelter in Poiana, wood and coal supply were obligations for the serfs of Sighiştel, Câmpani de Sus si de Jos.