The Sandvik MT520 is a new roadheader in the 91-t class, built for increased productivity and safety. The machine has easily exchangeable modules, which form the basis for cost-effective excavation in cutting conditions up to a compressive strength of around 100 MPa, where the ICUTROCTM hard-rock capability is not required. Read more at http://www.im-mining.com/2010/04/21/new-sandvik-roadheader-for-large-tunnelling-operations/