The era of coal, which began in the century, continues to now for the furnace took place in 1095, in the abbey of San Saveran-Ryu, in France. By 1177, in the English Yorkshire and the French Languedoc, they established the prey of stone coal. The first industry, where it began to be applied, was firing lime, followed by brewing and dyeing. The coal mine, which initially had a quarry form, became in the XIII century a routine draft in Liege, Mons, Charlerua, Anju.