Explain the Hierarchy of Controls, detailing each level from most effective to least effective.

Here are the levels of the Hierarchy of Controls, from most effective to least effective:

1. Elimination: This is the most effective control. It involves physically removing the hazard from the workplace. For example, stopping a dangerous process entirely.
2. Substitution: This involves replacing the hazard with a safer alternative. For example, using a less toxic chemical instead of a highly toxic one.
3. Engineering Controls: These controls isolate people from the hazard. This can include installing machine guards, ventilation systems, or enclosing a noisy process.
4. Administrative Controls: These controls change the way people work. Examples include implementing safe work procedures, providing training, job rotation, or limiting exposure times.
5. PPE (Personal Protective Equipment): This is the least effective control and should be used as a last resort or in conjunction with other controls. It involves protecting workers with personal protection equipment such as gloves, safety glasses, hard hats, or respirators.