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Every year, approximately 30 million people in the United States are occupationally exposed to hazardous levels of noise according to OSHA. Since 2004, the Bureau of Labour Statistics has reported nearly 125,000 workers have suffered significant, permanent hearing loss. Surgery and hearing aids can only help with hearing loss, not correct it. OSHA's permissible exposure limit (PEL) is 90 dBA for all workers for an 8 hour day. For each additional 5 dBA, the exposure time is cut in half. …