The serious dangers associated with confined spaces are invisible and silent. Entering a tank, vault, boiler or manhole can be a hazardous journey. There are conditions that make working in a confined space uncomfortable such as high or low temperatures or quality of air. Confined space work is safe if you follow the rules. If you ignore rules or take shortcuts, you are playing with serious injury or death. This program focuses on providing information that will show what you don't see can hurt you when working in confined spaces.