An engineering evaluation and experimental program involving several types of conveyors applied to processed fractions of municipal solid wastes was conducted by the National Center for Resource Recovery. This final project report discusses the properties and characteristics of waste affecting conveyability and presents experimentally determined values or observed characteristics. A procedure is developed for the selection, assessment and operation of belt conveyors based on spillage rate. Corroborating experimental results from a recirculating test rig operated with six waste fractions over a range of belt configurations, velocities and flow rates are presented. Experiments conducted on a vibrating pan conveyor with six feedstocks and over a range of frequencies and stroke length, and on a small apron conveyor (batch basis on two feedstocks), are described and the test results analyzed.