1Short titleThis regulation may be cited as the Coal Mining Safety and Health (Respirable Coal Dust) Amendment Regulation 2018.2CommencementThis regulation commences on 1 November 2018.3Regulation amendedThis regulation amends the Coal Mining Safety and Health Regulation 2017.4Amendment of s 89 (Dust)Section 89(1)(b)(i), ‘3mg/m³’—omit, insert—2.5mg/m³