30 C.F.R. § 955.5
As used in this part:
Applicant means a person who submits an application for an OSM blaster certificate.
Application means a request for an OSM blaster certificate submitted on the prescribed form, including the required fee and any applicable supporting evidence or other attachments.
Issue and issuance mean to grant to an applicant his or her first OSM blaster certificate that is not granted through reciprocity.
Reciprocity means the recognition by OSM of a blaster certificate issued by a State regulatory authority under an OSM-approved blaster certification program as qualifying an applicant for the grant of an OSM blaster certificate.
Reissue and reissuance are synonymous with the term recertification in § 850.15(c) of this chapter, and mean to grant to an applicant who holds a renewed OSM blaster certificate, or who holds an OSM blaster certificate that expired more than 1 year prior to the date of his or her application, or who held an OSM blaster certificate that was revoked, a subsequent certificate that is not granted through reciprocity and for which additional training and examination are required.
Renew and renewal mean to grant to an applicant who holds an issued or reissued OSM blaster certificate a subsequent certificate that is not granted through reciprocity and for which additional training and examination are not required.
Replace and replacement mean to grant to an applicant a duplicate OSM blaster certificate as a substitute for one that was lost or destroyed.
30 C.F.R. §955.5