ID#: 9650
Caption:
Workers at the Queens Midtown Tunnel construction site, New York City. “To keep water out of the construction sites, compressed air - of up to 37.5/lbs per square inch - was supplied from special power houses. Sandhogs entered and left the work zone through ‘man locks’ in bulkheads, which sealed off the construction site underground. Inside the man locks, air pressure was gradually adjusted to allow the workers to safely enter or leave the excavation without experiencing decompression sickness, or the bends,caused by the release of nitrogen bubbles into the blood and tissues if decompression occurs too rapidly.”
High Resolution: Click here for hi-resolution image (6.14 MB)
Content Provider(s): CDC/ Barbara Jenkins, NIOSH
Creation Date: 1939
Photo Credit: U.S. Dept. of Labor
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MeSH
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Anthropology, Education, Sociology and Social Phenomena
Biological Sciences
Chemicals and Drugs
Diseases
Geographic Locations
Health Care
Technology and Food and Beverages
Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.