Section 7999 Of Chapter 3. Licensing And Penalties From California Labor Code >> Division 5. >> Part 9. >> Chapter 3.

. No person shall be qualified to operate as a gas tester, or serve as a safety representative in a tunnel or underground mine unless he holds a certificate issued by the division. No certificate may be issued or renewed unless the applicant or licensee, as the case may be, has passed an examination given by the division.