The Mikuláš shaft was excavated at the turn of the 16th and 17th centuries with the aim of connecting the Belian heritage adit with the Siebenweiber vein and its possible further digging towards the west. After connecting the shaft to the heritage adit, the ventilation conditions improved significantly and the costs associated with transporting the wood chips to the surface were significantly reduced.

The depth of the shaft to the level of the heritage adit was 148.4 m. The extraction of tailings from the dug adit and later also of ore from the Siebenweiber vein was ensured by a horse gable built above the mouth of the shaft. At the beginning of the 18th century, the shaft was out of operation. The work was resumed only when the erar became the main shareholder (through the mining company Horná Bieberová adit). In the middle of the 18th century, the Mikuláš shaft belonged to the mining industry of the Mikuláš shaft and the Dávid adit. They were owned by up to 42 shareholders with the largest participation of the era. In 1763, 50 miners worked at the Mikuláš mine. In that year, mining of the Mikuláš shaft and the Dávid adit extracted ore worth 15,443 guilders with a load of 10,739 guilders. The profit was therefore 4,704 guilders. Since 1829, the Mikuláš shaft belonged to the utility plant Juraj adit at Jergi adit in Banská Bela. After the temporary operation of the shaft in 1878 thanks to the director of the Banská Štiavnice mines, Anton Péch, the entire shaft was reconstructed. Anton Péch was interested in deepening the mines in this area, but after his retirement, the work stopped and was not resumed later.