In this paper, we provide a review of Professor Powers's and his students' work on connecting fault analysis, discrete process control, human operating procedures, and symbolic model checking. In recent years, this type of research is placed under the banner of "cyber-physical systems research". Some of the techniques and procedures Powers and his students developed can be found in the open literature and conference proceedings. However, they have not been published broadly due to the untimely passing of Professor Powers. A complete overview of the methods are not available, and the cap-stone results obtained in the two last Ph.D. theses have not been published.