Strength criteria for steel silo structures; silo-quaking - a pulsating and load problem during discharge in bins and silos; techniques to assist in the in-plant handling of slurries, pastes and cakes; ash handling on large power stations in South Africa - the material, the equipment, the changes; the transmission of vibration through wet particulate solids; techniques for assessing the flowability of sodium carbonate (soda ash); friction and adhesion at bulk solids/wall interfaces; electrostatic problems in powder handling; the relative economics of bulk transport by alternative modes; transportation of solids using vibratory troughs; the study of the relationship between belt speed, pulling force and the motor power of the belt conveyor; fine powder flow phenomena in bins, goppers and processing vessels; design of large underground ore bins. Part contents.