Abundant Regulation Without Adequate Enforcement: Artificial Stone in California By Paul Calfo, Frederic "Rick" Norris & Rachel Choi on July 30, 2026 Posted in Legislative & Judicial Updates On May 21, 2026, the California Occupational Safety and Health Standards Board (OSHSB) granted in part Petition No. 609, kickstarting a process that may result in the ban of fabrication and installation of artificial stone in California.