A new CDC study revealed the top three industries where occupational hearing loss is the most common. The CDC’s Occupational Hearing Loss Surveillance Project compared the prevalence of hearing loss within nine U.S. industry sectors from more than 1.4 million worker audiograms. The audiograms were from workers exposed to high noise levels from 2003 to 2012, defined as greater than 85 decibels on the A-scale. The mining sector had the highest prevalence of workers with any hearing loss (17 percent), followed by the construction sector (16 percent) and the manufacturing sector (14 percent). The public safety sector (which includes police officers, firefighters and corrections officers) had the lowest prevalence among the industries studied, at 7 percent.