The objective of this project was to demonstrate the technical and economic feasibility of using high-temperature ceramic filters for particulate control in combined cycle coal gasification power plants. The overall program strategy involved three major tasks: (1) investigation of alternate designs; (2) bench-scale gasifier filter evaluation; and (3) economic assessment of a commercial-scale gasifier filter. This report presents detailed descriptions and conclusions for each task. The tests and preliminary economic assessment show that ceramic bag filters are potentially attractive candidates for gasifier particulate cleanup. 70 figs., 33 tabs.