Approval. A written document issued by MSHA which states that a product has met the applicable requirements of part 18, 19, 20, 22, 23, 27, 33, 35, or 36. The definition is based on the existing definitions of approval in the parts specified above. It is expanded to include certification and acceptance because these terms also are used to denote MSHA approval.
30 CFR § 6.2
The following definitions apply in this part.