The 220 SM / 220 SMi is the prime choice not only for use in small and medium-scale mining operations but also for routing work and infrastructure projects. The compact, multipurpose surface miner extracts primary resources with an unconfined compressive strength of up to 50 MPa selectively and at a cutting depth of up to 11.8 in (300 mm). The 7 ft 3 in (2.2-m) wide cutting drum unit is tailored precisely to the specific application and guarantees high productivity at low operating costs. Primary resources are extracted in a single, environmentally sustainable operation without drilling and blasting, yielding material of the purest quality. Windrowing enables the mined material to be deposited behind the machine in a continuous process.