@article{seccatore_magny_de tomi_2014,  title={Technical and operational aspects of tunnel rounds in artisanal underground mining},  volume={67},  ISSN={0370-4467},  url={https://doi.org/10.1590/S0370-44672014000300010},  DOI={10.1590/S0370-44672014000300010},  number={3},  journal={Rem: Revista Escola de Minas},  publisher={Escola de Minas},  author={Seccatore, Jacopo and Magny, Lorenzo and De Tomi, Giorgio},  year={2014},  month={Jul},  pages={303–310} }