The research program undertaken had four primary objectives, listed as follows: (1) to investigate the physical and chemical behavior of wet high sulfite, scrubber sludge subjected to ultrasonic screening, and to assess the effectiveness of this technique for facilitating sludge disposal; (2) to investigate the utilization of dewatered sulfite scrubber sludge as a component in autoclaved structural products as a direct disposal alternative; (3) to determine the feasibility of the production of kiln-fired, coal-based, insulating structural shapes incorporating coal and coke as combustible additives; and (4) to monitor the physical behavior of flyash blocks in non-reactive (ambient) and marine environments. This was a joint effort undertaken with the State University of New York (SUNY) at Stonybrook, LI, to develop a novel disposal method for coal-associated wastes produced in the New York area. This final report summarizes data and discusses the results. Discussion is presented under the headings: dewatering scrubber sludge, autoclaved structural products, kiln-fixed coal-based insulating structural shapes, and production and testing of flyash blocks. 5 references, 15 figures, 19 tables.