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National Hearing Conservation Association

PRESIDENT: Ted Madison
9101 E. Kenyon Ave., Suite 3000
Denver, CO 80237
Voice: 303-224-9022
Fax: 303-770-1812
Web site:

The mission of NHCA is to prevent hearing loss due to noise and other environmental factors in all sectors of society. NHCA provides provide information to anyone interested in learning more about hearing loss prevention. Information provided on the web site includes: a hearing information bibliography with articles related to hearing conservation and prevention, information about Crank it Down, a program designed to educate school-age children on hazardous noise, position statements on various hearing related topics and educator resources.