National Transportation Safety Board (NTSB) Investigator-In-Charge Matt Nicholson is projected on a monitor as he testify during a NTSB meeting in Washington Tuesday, July 10, 2012, pre

 

              National Transportation Safety Board (NTSB) Investigator-In-Charge Matt Nicholson is projected on a monitor as he testify during a NTSB meeting in Washington Tuesday, July 10, 2012, pre
National Transportation Safety Board (NTSB) Investigator-In-Charge Matt Nicholson is projected on a monitor as he testify during a NTSB meeting in Washington Tuesday, July 10, 2012, presided by NTSB Chair Deborah Hersman, center right panel, to determine a cause of a pipeline rupture in 2010 that dumped more than 800,000 gallons of oil into a southwestern Michigan river. (AP Photo/Manuel Balce Ceneta)