This document discusses industrial accidents and hazards. It defines an industrial accident as an occurrence in an industrial establishment that causes bodily injury, making a worker unfit for duties for at least 48 hours. Industrial accidents are classified by severity, from first aid accidents to fatal accidents. Causes of accidents include unsafe conditions, unsafe acts, plant equipment, environment, people, and work systems. The document also covers hazard identification, control techniques like elimination and engineering controls, and the importance of accident prevention through education, enforcement and engineering approaches.