"Production of forty percent core area flyash brick using a lignite flyash, a northern West Virginia flyash, and a western Kentucky flyash. "; "Slonaker, John F."; "Fly ash.", "Brickmaking."; "Slonaker, John F."; "1975"; "Serial issue. Issued as: West Virginia University. Coal Research Bureau. Technical report, no. 112. "; ""; "P3952"; "pec"; "Fly ash.", "Brickmaking."; "14256"; .