Bubonic plague
At the beginning of the 18th century, the population was decimated by the Bubonic plague and fires and was reduced to a mere 2,000 inhabitants. By the second half of the century, however, the town had recovered; crafts and trade improved, and new factories were built. In 1752 the salt mine in Solivar was flooded. Since then salt has been extracted from salt brine through boiling.