OSHA Issues Inspection Guidance for Enforcement of Respirable Crystalline Silica Standard By Publisher & Phillip B. Russell on July 15, 2020 Email this postTweet this postLike this postShare this post on LinkedIn On June 25, 2020, the Occupational Safety and Health Administration (OSHA) issued Inspection Procedures for the Respirable Crystalline Silica Standards. The new procedures, 124 pages in length, went into effect immediately.