Portable Rock Crushers - Metallurgist & Mineral …- large portable crushers ,The Input to the System. Just like the very large central crusher located (probably) at the shaft, the proposed decentralised portable crusher system must handle ROM (run of mine) ore.small portable rock crusher - YouTube · World Machinery Co., Ltd. Shanghai Xuan referred to as "Xuan Shi machinery", is the production of large stone production line, sand production line mainly design, manufacture, sales and service as ...