RSA 158:9-h Certificates of Competency for Explosives.

I. No person shall use explosives unless at least one natural person with a current and valid certificate of competency is physically present to conduct the blasting operation. A certificate of competency shall not constitute a license under RSA 158:9-b but shall be in addition to any other license required under that section.
II. No natural person shall conduct blasting operations without a current certificate of competency issued by the commissioner of safety and valid for the category of use involved. Such certificate shall be valid for 4 years from the date of issue unless suspended or revoked by the commissioner.
III. The commissioner of the department of safety shall adopt rules, pursuant to RSA 541-A, establishing the categories of certificates of competency based