PHOTO GALLERY: 05.12.11 Subcommittee on Clean Air and Nuclear Safety hearing entitled, "Federal Efforts to Protect Public Health by Reducing Diesel Emissions" May 12, 2011 - Permalink: https://www.epw.senate.gov/public/index.cfm/2011/5/gallery-e6296b78-802a-23ad-4f20-ceb36b595d27