Range Resources Corporation operates in the Crude petroleum and natural gas sector. Range Resources Corporation is an independent natural gas and oil company. The Company is engaged in the exploration, development and acquisition of primarily natural gas and oil properties, mostly in the Appalachian and Southwestern regions of the United States. As of December 31, 2010, it owned 2,688,000 gross (2,078,000 net) acres of leasehold, including 340,000 acres where it also owned a royalty interest. The Company has built a multi-year drilling inventory that is estimated to contain over 8,100 drilling locations, both proven and unproven. During the year ended December 31, 2010, its proved reserves consisted of 4.4 trillion cubic feet equivalent (Tcfe) of proved reserves, 80% natural gas, 49% proved developed, 85% operated and a reserve life of 22.3 years. During 2010, the Company acquired acreage located in its core areas, primarily in the Marcellus Shale, and sold its tight gas sand properties in Ohio. In our complete report available for purchase the company is compared to: SM Energy Company, Sandridge Energy, Inc. and Cabot Oil & Gas Corporation.