The mid-belt RS sampler, designed to sample up to 6-in. material including coal, limestone and ores, features low maintenance and heavy-duty construction. The low-cost design is proven to provide installation with ease. The RS can be installed anywhere on the belt where it can obtain a sample that can be delivered to ground level. On command from an automatic or manual controller, an unattended rotating sample cutter, with wiper seal, takes a pass across the moving belt. This sampler obtains a representative and repeatable sample, including fines. It meets ASTM D-2234 specifications.