Milan Mikolas (2017). ROTARY PERCUSSIVE DRILLING WITH SUBMERSIBLE DRILLING HAMMERS AND OTHER METHODS OF DRILLING WORK IN QUARRY OPERATIONS. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining, 797-804. https://doi.org/10.5593/sgem2017/13/s03.101