Piotr Mertuszka. "SELECTED METHODS OF BLASTING WORKS EFFICIENCY ASSESSMENT." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining (2019): 579-586. https://doi.org/10.5593/sgem2019/1.3/s03.074