With the Thirty Years' War (1618-1648), the production of silver declined in the mines of Tellure, near Sainte-Marie-aux-Mines. The Saint-Jean vein was, for example, abandoned in 1635. The extraction restarted around 1711, but torrential waters invaded the silver galleries in 1740, followed by the same phenomenon in the lead's mine nine years later. The floods interrupted the work of the factories that needed lead to separate the silver from the copper. Between 1755 and 1759, the members of the mining concessions disengaged financially, and the workers began to leave the region.