Document 99Bd0G9G9oRE7p7EMOk5vj8a7

INDUSTRIAL NOISE program is effective, use followup bearing tests Ear plugs do not provide die same amount of attenuation m the field as they do In the laboratory, probably because of incorrect fitting and failure to maintain a good seal even with properly fitted plugs I .united re search data indicate dial ear plugs provide on the average about 5 db less attenuation under field oondWons than m lab tests. References Noise-exposure analysis Peterson, A P G, and L L Beranek HAndboaft of Noise Measurement Cambridge, Mass, General Radio Company, 1956 Snow, W B. "Instruments for Noise Measurements " Nairn Contra/, vot 1, No 3 16, 1955 Noise-exposure control American Academy of Ophthalmology and Otolaryngology, 15 Second St. SW, Rochester, Minn. Guide for Canacrvatjan of Hearing to Nom. 1964 (Available from Research Center Subcom mittee on None. 327 South Alvarado St, Los Angeles, Calif ) American Faunrlrymen's Society, Inc, Des Plaines, B1 Foundry Noise Manual, 1956. American Society of Heating. Refrigerating and An1-Conditioning Engineers, Inc, 345 East 47th St, New York City Guide and Data Book, Fundamentals and Equipment. Beranek, L L ___ Acoustics New York City, McGraw-Hill Book Company, 1954. None Reduction. New York City, McGraw-Hill Book Company, i960 Bolt, R H., and others, eds. Handbook of Acoustic Noise Control, voL 1, "Physical Acoustics.** Dayton, Ohio, Wright Air Development Center. Technical Report 52-204. 1952. Glong, Aram. "The Practical Aspects of Ear Protection." American industrial Bygone Association Journal, 17 43-48 (March 1956). Hams, Cyril M, ed. Handbook cl Noise Control. Nets York City, McGraw-Hdl Book Com pany, 1957. "Industry's Nmse Problem." Occupational Bexards, 18 30-33 (July 1956) Pietrasanta, A C "Fundamentals of Noise Control " Noise Control, 1 10-16 (Jan 1955) Wheeler, D E, and A. Glong "The Industrial Hygienist and Ear Protection " American indus trial Hygiene Association Journal, 16 40-45 (March 1955) Reprinted in Noise Control, 2 45-49 (Jan 1956) Hearing evaluation "Guide to the Evaluation of Permanent Impairment Ear, Nose, Throat, and Related Structures." Journal oI the American Medical Association, (Aug 19. 1961) General Acoustical Society of Amenta, 335 East 45th St., New York City Sound (bi-monthly). American Industrial Hygiene Association, 14125 Prevost St, Detroit Mich American Industrial Hygiene Association Quarterly "Conference on Factory Noise ** Vol IS, No 1 (March 1954) "Third Industrial Noise Conference *' VoL 17, No 1 (March 1956) Industrial None Manual 1958 American Standards Association. 10 East 40th St, New York City S Senes on Acoustics, Vibra tion, t.-n.-nl Shock, and Sound Recording Building Research Institute, 172 3. De Sales St NW, Washington, D C Building Research. (Published bi-monthly ) None Control m Buildings Publication 706. Glong, A M Norse and Your Ear. New York City, Grane & Stratton, 1959 Industrial Hygiene Foundation of America, Inc a Mellon Institute, 4400 Fifth AVC, Pittsburgh, Pa. An Annotated Bibliography on Nona, Its Measurement, Effects and Control. 1955 Journal of the American Saaety of Salety Engineers, Symposium "The Noise Problem ** Vo! IX, No 4 (April 1964). Richardson, E G The Technical Aspects of Sound New York City, Elsevier Publishing Company, 1953 Rosenbbth, W A, and K. N Stevens Handbook of Acoustic Noise Control, vol II, "Nome and Man." Dayton, Ohio, Wnght Air Development Center Technical Report 52-204. 1952 Watson, L A., and T. Tolan. Hearing Tests and Bearing Instruments Baltimore, Md, Williams and Wilkins, 1949 43-19