Image: Earplug fitting
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Description: Badly-inserted earplug, semi-inserted earplug, and properly-inserted earplug
Title: Earplug fitting
Credit: https://blogs.cdc.gov/niosh-science-blog/2018/10/24/hearing-protection/
Author: CAPT William J. Murphy, Ph.D., Christa L. Themann, MA, CCC-A,CAPT Chucri (Chuck) A. Kardous, MS, PE, and CAPT David C. Byrne, Ph.D., CCC-A / U.S. National Institute for Occupational Safety and Health
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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