The manual is the fourth of six student manuals for use in a course on occupational health and safety for supervisory personnel. The manual contains lessons 8-11 of the 15 consecutively-numbered lessons, each of which contains study questions (and answers) interwoven with the text and review questions at the end of each section. Lesson 8 discusses occupational health and environmental control and covers toxic materials, noise, airborne contaminants, lighting and radiation, and their internal and external effects on the human body. Lesson 9 discusses the basic types of personal protective equipment and covers the use of such equipment, its relation to the Occupational Safety and Health Act, and the implementation of a personal protective equipment program. Lesson 10 covers emergency care procedures and, with the aid of diagrams, discusses measures to counteract cessation of breathing, severe bleeding, and traumatic shock. Lesson 11 discusses fire loss control and covers proper selection and use of fire extinguishers and education of employees in fire protection and control. (JR)