ID#: 9482
Caption:
This 1949 historical photograph was provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH). Reprinted from the August, 1949, ”Industrial Hygiene Newsletter”, it depicted a Mine Safety Appliances Company (MSA), Davis Micro Gas Analyzer™, a machine used to monitor indoor/outdoor air contamination.
High Resolution: Click here for hi-resolution image (4.84 MB)
Content Provider(s): CDC/ Barbara Jenkins, NIOSH
Creation Date: 1949
Photo Credit: Unknown
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.