... from the filters is carried by a portable ejector through one or more lengths of 3-in. hose and a fixed line of 4-in. pipe, to the sand washers. From the sand washers, the washed sand is carried to the reinforced concrete storage bins, each of which has a capacity of 250 cu. yd., and ... — Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 • E. D. Hardy