The NIOSH logo is recognized by workers, employers, and safety and health professionals worldwide. When the logo appears on a document, website, certified respirator, or other product it tells the user that the information or product is backed by NIOSH state-of-the-art research and expertise. The NIOSH logo has evolved over time. Figure 1 shows a logo used by the NIOSH predecessor, the Bureau of Occupational Safety and Health, in 1968. Figure 2 shows what was used on a NIOSH Technical report from 1978. The logo in Figure 3 is what was used during much
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