• Extended exposure to sounds above 85 db can lead to progressive hearing loss. Anyone exposed to sounds above 85 db of noise requires hearing protection.
  • The special limit for people who are exposed to noise above 90 db is 8 hours, for 95 db is 4 hours and 2 hours for 100 db.
  • A brief blast of loud sound also can result in severe to profound sensorineural hearing loss and pain. This usually involves exposure to noise above 120-155 db. Hearing protection in the form of muffins or ear plugs is recommended whenever a person is exposed to loud noise.