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  • پیشگیری از سیلیكوزیس

    314 بازدید

    In 1938, the Department of Labor produced a film titled "Stop Silicosis." Secretary Frances Perkins concluded that silica dust was dangerous, and can be prevented. Those that were exposed didn't know then, and many still don't know now. Meet Tom and learn why we must get the word out and #StopSilicosis. http://osha.gov/silica