The Wisconsin Oil & Gas Industry Safety Alliance has produced a fantastic presentation/handout on excavation and trenching safety, including a quiz with answers. Check out what they put together.
You may encounter trenching and excavation operations on site. Therefore, it is important that you are aware of the potential hazards. By understanding the hazards; providing adequate work zone traffic control; using protective equipment such as trench boxes; having a properly trained, competent person on site to monitor the trenching operations; and instituting a written program that emphasizes planning prevention, and training; excavation-related injuries and fatalities can be prevented.
Take a look at the handout HERE
Quiz questions (10) provided HERE
Answers to the quiz provided HERE