Part of the Olin Mathieson Plant on the far side of Side of Lake Charles, La., is seen in July 1972 at left. People sun themselves, right, near the site of the old Olin-Matheison Plant in April 2012. Credit: Marc St. Gil / U.S. National Archives via AP; Gerald Herbert / AP (via PhotoBlog - Photographers revisit sites of EPA’s ‘Documerica’ project... - http://dendroica.tumblr.com/post...