The basic objective of the coal feeder program is to supply architects, process designers, and engineers with high-pressure coal feeders having predictable performance, durability, economy, and safety for all coal-conversion processes. This report covers the work carried out during the April-June 1983 quarter of the program. During the reporting period, the Model No. 6 Kinetic Extruder was assembled and the endurance test program was begun. During the month of June, about 60 h of test time was logged on the machine. The new Crane Packing Co. gas seals and the new control and instrumentation systems are performing very well. Testing is continuing. 6 figures, 5 tables.