These photographs were taken while Senator Bingaman speaks at a hearing in July, 2011.

These were the photographs of Senators Bingaman and Mark Udall while they talk during an Energy Committee hearing in June, 2011.

These photographs were taken while Senator Bingaman attends a hearing in March, 2011.

These photographs were taken while Senator Bingaman attends a hearing in February, 2011.

These photographs were taken during a hearing in the year 2011.

These were the photographs of Senators Bingaman and Udall during a conference call in May, 2010.

These photographs were taken while Senators Bingaman and Corker were having lunch in March, 2010.

These photographs were taken while Senator Bingaman listens and speaks at a hearing in June, 2010.

These photographs were taken while Senator Bingaman speaks at a hearing in one of the Senate Office Buildings in May, 2010.

These were photographs of Senators Wyden, Bingaman and Murkowski while they attend an Energy Committee hearing in February,2010.