Accession Number:

AD0655569

Title:

INVESTIGATION OF EAR PLUGS FOR PROTECTION AGAINST GUN BLAST

Descriptive Note:

Corporate Author:

ARMY MEDICAL RESEARCH LAB FORT KNOX KY

Personal Author(s):

Report Date:

1944-08-05

Pagination or Media Count:

18.0

Abstract:

Acoustic protection is needed for all personnel who are regularly exposed to the noise of gun fire or to blast. The characteristics and course of the temporary loss are like that following exposure to sustained high noise levels. Expedients in current use cotton and waste are unsanitary and not entirely reliable. Of the plugs tested, NODS, and the baffled rubber stopper were inadequate and impractical to use. M.S.A. Ear Defenders, N.D.R.C. Ear Wardens and Sepco Plugs provide the best protection against temporary loss. Sepco plugs are somewhat less satisfactory because of higher attenuation of speech.

Subject Categories:

  • Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE