Contents: General principles in evaluating the occupational environment; A review of sampling instruments used for the collection of air-borne particulates; Gas and vapor sampling and analysis; Direct reading instruments; Air flow calibration of air sampling equipment; Preparation of known concentrations of air contaminants; Sampling and counting dust; The determination of particle size distribution in industrial dust; Determination of nitrogen oxides in air; Application of biochemical methods to occupational health problems; Medical and industrial applications of radiation; Sound and noise; Noise measurement; Illumination and ultraviolet radiation; Comfort ventilation; Engineering control of the occupational environment; Control of noise exposure; Introduction to ventilation airflow; Dilution and general ventilation; Local exhaust systems; Fans; Air cleaning; Airflow measurement; and Ventilation references.