The first reference of the shaft is in 1399. Also called Treadmill or Seraph, the name comes from Mikołaj Bochner a salt trader who, in 1399, received in Nowy Korczyn the permit to excavate salt from King Wladyslaw Jagiello enabling him to sink a new shaft. The collapse of the shaft was caused by the great fire in 1581 which lasted 15 weeks, during which “thirty miners died down in the mine from an awful stench and several others who wanted to put the fire out.”
Photo: The Museum of Stanisław Fischer in Bochnia