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ATTENTION! An Upgraded Version of the Site to Launch in January 2026 – Act now to download any saved plans.

CPWR launched this site in 2012, and we are pleased to report it continues to be used regularly to protect workers from silica exposure. To ensure the site continues working long-term, we are in the process of upgrading the underlying technology. If you are a registered user, there is a chance that saved plans in your account may be lost during the transition. If there are plans you want to keep, please save them to your computer by selecting the “Print” option and then printing or saving the documents as PDF files (the “Download” function is currently unavailable) by December 31, 2025.

We apologize for the inconvenience but appreciate your support during this upgrade.

Regulations & Requirements

OSHA Special Emphasis Program and Directives

OSHA National Emphasis Program – Respirable Crystalline Silica


On February 4, 2020, OSHA issued a Directive (CPL 03-00-023) for the implementation of a National Emphasis Program (NEP) to identify and reduce or eliminate worker exposures to respirable crystalline silica (RCS) in general industry, maritime, and construction.

This instruction targets specific industries that are expected to have the highest exposure to RCS. It also focuses on the enforcement of the new RCS Standards, 29 CFR § 1910.1053 and 29 CFR § 1926.1153, which became active on June 23, 2016.