Safety

Elimination: physically removing the hazard so no one is exposed to it.

Personal protective equipment (PPE), because it relies on correct use by each worker and leaves the hazard in place.

Elimination, substitution, engineering controls, administrative controls, PPE.

An engineering control: it isolates workers from the hazard without depending on their behavior.

An administrative control: it changes how or when work is done rather than the hazard itself.

Substitution: swapping a hazardous material or process for a less hazardous one.