As with natural gas, in the petroleum industry, our lawyers have represented clients in upstream, midstream and downstream markets, including major oil companies and large and small independent producers in exploration and production matters, including environmental and other permitting issues. We are also highly experienced in the acquisition and disposition of petroleum pipelines and associated facilities, financing and tax structuring of production activities, and in the offering and sale of interests in such activities as part of the financing process. As outside general counsel for a large independent petroleum refiner and marketer, we have handled a variety of financial, litigation and environmental matters involving refineries, product distribution networks and retail outlets.