Cave Geomechanical Index (CGI). Classification and Contribution to the Conservation of Natural Caves in the Iron Mines Iuri Viana Brandi, Marcelo Barbosa, Airton Barata, Rafael De Paula, Tomas Correa, Hernani Lima, Robert Osborne, 10.30486/gcr.2021.1908888.1033 Requires Subscription HTML Requires Subscription PDF views: 93 downloads: 271