Keywords: Trench safety - improper eyebolt (9247876609).jpg An improper eyebolt that is unsafe to use https //www flickr com/photos/niosh/9247876609/ Trench safety - improper eyebolt 2010-03-17 11 23 https //www flickr com/people/25069384 N03 National Institute for Occupational Safety and Health NIOSH from USA PD-USGov NIOSH http //flickr com/photos/25069384 N03/9247876609 2015-04-23 18 50 40 United States Government Work Construction Safety Shoring Work Workplace National Institute for Occupational Safety and Health |