PHOTO GALLERY: 03.20.12 Subcommittee on Clean Air and Nuclear Safety hearing entitled, "Oversight: Review of the Environmental Protection Agency’s Mercury and Air Toxics Standards (MATS) for Power Plants.” March 20, 2012 - Permalink: https://www.epw.senate.gov/public/index.cfm/2012/3/gallery-3b5804af-802a-23ad-49f9-7796cc06a100