As the booming Marcellus Shale industry is changing the region's legal landscape, Buchanan Ingersoll & Rooney is expanding its practice, already one of the largest and most established oil and gas practices in the region.

As Energy Section Co-chair Sean W. Moran told the Pittsburgh Post-Gazette in an article published February 13, 2012, Buchanan has added more than 20 attorneys to its oil and gas roster in the past two years.

In the last few years, the firm's energy team has represented clients in oil and gas-related transactions with an aggregate value of $15 billion, Moran explained.