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When hearing protectors are required, calculate their noise reduction efficiency | 2017-02-01 | ISHN
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ProCase Noise Reduction Safety Ear Muffs, 32dB Hearing Protection Earmuffs Ear Defenders with Adjustable Headband for Shooting Mowing Construction Manufacturing Woodwork -Black - Amazon.com
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Mpow NRR 28dB Noise Reduction Safety Ear Muffs, Shooters Hearing Protection Ear Defenders , Compact Foldable Earmuffs for DIY, Shooting, Mawing Lawn or Hunting,Woodwork,Adult - Walmart.com
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ProCase Noise Reduction Safety Ear Muffs, Hearing Protection Earmuffs, NRR 28dB Noise Sound Protection Headphones for Shooting Gun Range Mowing Construction Woodwork Adult Kids -Red - Amazon.com
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ISOtunes XTRA 2.0 Bluetooth Hearing Protection Earbuds, 27 dB Noise Reduction Rating, OSHA Compliant Work Ear Protection (Yellow) IT-22 - The Home Depot
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