The Hierarchy of Controls is a method of controlling hazards starting with the most effective and ending with the least effective way to avoid a dangerous situation.
Physically removing the hazard is always the safest way to avoid it.
If you cannot remove the hazard altogether, try replacing it with something safer.
Isolate people from hazard.
Change the way people work
Personal Protective Equipment
Protect the worker with PPE
Remember the closer you can stay to the top of the Hierarchy the better.
Learn more about the Hierarchy of Controls