This paper provides a summary of the Control of Particulate Processes III Conference held January 24-29, 1993, in Santa Barbara, CA, USA. It is the third in a series of such conferences held by the Engineering Foundation. The purposes and goals behind the conference are highlighted, and the major points as well as unresolved challenges of the presentations are summarized. Despite the economic impact, insufficient attention is often paid to the difficulties associated with the processing of particles. It is clear that improved appreciation of particle science, engineering and technology and its practical application to manufacturing processes can have a profound effect on particle product quality, process simplification, manufacturing process operation, and new plant design and construction. The problem is that expertise to address these areas resides in no one discipline. A multidisciplinary team effort is required if real progress is to be made. In this paper we summarize such an attempt made towards this interdisciplinary gathering through the Santa Barbara Conference.