What is the life span of a hard hat and when does it need to be replaced?

The question we get asked most often about Hard Hats is, when they need to be replaced. So I thought I would re-post this article discussing the re...

Hard Hat Life Span - When does a hard hat need to be replaced

What is the life span of a hard hat? There is a lot of confusion around the life span of hard hats, or when a hard hat needs to be replaced. Hopefu...