The Occupational Safety and Health Administration and the National Institute for Occupational Safety and Health (NIOSH) in the United States have jointly issued a hazard alert about protecting workers from significant crystalline silica exposure during manufacturing, finishing and installing natural and manufactured stone countertops.
The hazard alert follows reports of 46 workers in Spain and 25 workers in Israel who developed silicosis — an incurable, progressively disabling and sometimes fatal lung disease — as a result of exposure to crystalline silica in their work manufacturing stone countertops. Ten of the workers in Israel required lung transplants as a result of their condition. OSHA and NIOSH have identified exposure to silica as a health hazard to workers involved in stone countertop operations in the United States, both in fabrication shops and during in-home finishing/installation. The alert jointly issued by OSHA and NIOSH explains how this hazard can be mitigated with simple and effective dust controls.
Crystalline silica is found in granite, sandstone, quartzite, various other rocks and sand. Workers who inhale very small crystalline silica particles are at risk for silicosis. Symptoms of silicosis can include shortness of breath, cough and fatigue, and may or may not be obviously attributable to silica. Workers exposed to airborne crystalline silica also are at increased risk for lung cancer, chronic obstructive pulmonary disease and kidney disease.
The hazard alert details what can be done at stone countertop fabrication and installation worksites to protect workers from exposure to silica. This includes monitoring the air to determine silica exposure levels; using engineering controls and safe work practices to control dust exposure; and providing workers with respiratory protection when needed, training and information about the hazards of silica.
View the hazard alert here.
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