The incident took place on January 20 in the evening at the Rudna Mining Complex (Lubin County). KGHM reported:

A total of 15 people were evacuated from the hazard zone at the Rudna Mining Complex. At the mine, in the GG-2 area, at section G-11, a rock burst with an energy of E=1.4xE7 occurred as a result of blasting operations.

Earlier, the company had reported that 6 workers had been evacuated.