WAM has become the world’s leader in supplying Cement Screw Conveyors and Feeders due to uncompromising dedication to research in powder handling technology, as well as constant improvement of product and manufacturing technology. In the past forty years the ES Screw Conveyor has become synonymous with cement feeding and conveying in concrete plants all over the world. During this period WAM® have supplied more than two hundred thousand units worldwide. At the beginning of the new millennium it