This report is divided into three chapters. Chapter 1 is directed primarily to the reader interested in the less detailed aspects of productivity in the industry. Chapter 2 presents detailed case studies of each plant and will be of value to the plant superintendent or the production engineer. Chapter 3 is a brief discussion of workers' earnings, and the benefits to the worker due to increased productivity and unionization, where applicable. The appendixes contain case studies of labor adjustments to technological changes, industry background information, and a copy of the questionnaire used. A glossary of trade and technical terms completes the report.