The use and handling of explosives is restricted to permittees, their employees and authorized representatives, who shall be at least 21 years of age; however, persons between the ages of 18 and 21 years may be permitted to use and handle such explosives if they are under the direct personal supervision of an experienced competent permittee, employee or authorized representative over the age of 21 years.
Cal. Code Regs. Tit. 19, § 1568
Note: Authority cited: Section 12081, Health and Safety Code Reference: Sections 12000-12401 inclusive, Health and Safety Code.