It is interesting to get involved to a building, a factory, a warehouse, a terminal port, an airport, and some different types of working environments. Each place has it's own property of working, and it's style of people working inside it.
When doing survey, one must first have a grasp of where he is, and do some research beforehand. Type of work, equipment types, any dangerous material... to categorize all the risks, there are two kinds of unsafe: unsafe behaviors, unsafe environments.