Rockfall in open pit mines can result in serious harms damaging plants or vehicles and killing mine workers or other persons that may enter the mining area. To avoid them, cleaning up berms is one of the important works regarding operation. But this method is time-consuming and costly. The need for a cheap and fast way to protect the open pit mining area from rockfall has led to this study. Finally, four vertical profiles from Erzberg mining area and three different scenarios are analysed with various geotechnical parameters. It is the biggest iron ore open pit mine in Central Europe. For the rockfall simulations the "RocFall" software is used. This is a statistical analysis program designed to assist with a risk assessment of rock slopes and evaluation of mitigation measures. An extensive parameter study is performed. One parameter set originates from former investigations and the other ones are selected from the "Rocscience Coefficient of Restitution" Table suggested by "RocFall" software. The outcomes of the simualtions lead to a huge amount of data. After several processing steps, the required heights and energy capacities for the barriers are determined.