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IntroductionWork Area Posting
Product LabelingSample Warning Sign

Introduction

For General Industry and Maritime operations, signs are to be posted to identify regulated areas containing crystalline silica. The Silica Standard defines "regulated areas" as those areas where an employee's exposure to airborne respirable crystalline silica is, or can reasonably be expected to be, in excess of the PEL.   Signs should also warn employees about the hazard and specify any protective equipment required (for example, respirators).

Work Area Posting

The required warning signs for work areas should be printed in English and the predominant language of non-English-speaking employees, unless they are otherwise trained and informed of the hazardous areas. Illiterate employees must receive such training.

Entrances

Per the General Industry Standard, a warning sign with the following wording is to be posted and readily visible at or near entrances or access ways to regulated work areas where a potential exposure to crystalline silica exists. 

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Product Labeling

OSHA's Hazard Communication Standard (29 CFR 1910.1200) requires manufacturers and employers to label silica-containing products with "appropriate hazard warnings" and provide Safety Data Sheets to purchasers and users. Because of a carcinogen determination by the International Agency for Research on Cancer (IARC), Safety Data Sheets must indicate the presence of silica for concentrations at or above 0.1 percent and indicate the IARC carcinogen designation.

The following label is one example of what may be considered an "appropriate hazard warning."



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