Labor Code section 7999

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.

Source: Section 7999, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=LAB§ionNum=7999.­ (updated Jan. 1, 1974; accessed Jun. 16, 2025).

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§ 7999’s source at ca​.gov