One, two, three, four I do not want to start a flame war.

I have too disagree with the term of OSHA approved in the earlier post. Here is a excerpt from an OSHA letter of interpretation.

OSHA is generally precluded from approving or endorsing products. Also, the variable working conditions at job sites and possible alterations or misapplication of an otherwise safe product could create a hazardous condition beyond the control of the manufacturer. However, where appropriate, we try to give some guidance to help employers assess whether products are appropriate to use in light of OSHA requirements.

OSHA does not "approve" products. They may say that when used properly a product is possible to meet their regulations. But that does not mean it is "OSHA Approved"

If you have a letter from OSHA then please attach it or e-mail it to me.
Scott