In groups of five, create a brief presentation of one of the following topics: 1. Lead exposure in construction: minimizing risk to workers and the environment. 2. Noise exposure and hearing conservation in construction. 3. Heat Stress in manufacturing: prevention and management 4. Radiation exposure in mining: minimizing risk to workers. 5. Indoor air quality in manufacturing: controlling airborne contaminants. Your PowerPoint presentation will address the questions such as: 1. Rate of occurrences of the occupational disease or condition. Ex. Number of workers in Ontario, Canada, North America who experience symptoms due to exposure; demographics of those impacted; mortality rate or long-term disability; chronic effects etc. 2. Hierarchy of Controls used to control exposure - Emphasize the programs, policies, best practices, equipment that is used to control, safeguard and monitor exposure. 3. Describe the science of how certain pieces of equipment operate and the information they convey. Describe how effective the hierarchical controls along with benefits and challenges