An example of a material that is excluded from the Right to Know Law is:

Liquid Paper correction fluid (or white-out).

Explanation:

An example of a material that is excluded from the Right to Know Law (which is a principle in environmental law whereby people working in a workplace or community are entitled to know the types of substances, especially chemicals, that they are/would be exposed to while being there) is Liquid Paper correction fluid (or white-out).