Tenaska, Inc. is well known and respected within the independent power industry. Tenaska is tenacious when it comes to producing and selling energy. The employee-owned company is a top natural gas marketer in North America(selling or managing more than 2 trillion cu. ft. of natural gas a year though Marketing Ventures/Tenaska Marketing Canada); it is also a leading independent power producer, trading,and marketing electricity (including renewable energy). Its Tenaska Power Services unit -- which is promoting the use of clean coal technology -- develops, owns, or operates 10 generating plants with 6,800 MW of capacity in the US. Other operations include fuel supply, biofuels development, oil and gas exploration and production, power transmission, and gas transportation contracting.

Cabot Oil & Gas Corporation was founded in 1989 and is headquartered in Houston, Texas.Cabot Oil & Gas Corporation engages in the development, exploitation, and exploration of oil and gas properties in North America. Its principal areas of operation comprise the Appalachian Basin; the onshore Gulf Coast, including south and east Texas and north Louisiana; the Rocky Mountains; and the Anadarko Basin. Cabot Oil & Gas Corporation also operates in the deep gas basin of Western Canada. In addition, it transports, stores, gathers, and produces natural gas for resale. As of December 31, 2008, Cabot Oil & Gas Corporation had total proved reserves of 1,942 billion cubic feet of natural gas equivalents.

Mariner Energy, Inc. was incorporated in 1983 and is headquartered in Houston, Texas with additional offices in Midland, Texas; and Lafayette, Louisiana. the independent explores in both the deep and shallow waters of the Gulf of Mexico, where Mariner Energy, Inc. has the bulk of its proved reserves. But the landlocked Permian Basin of West Texas is also an area of focus. Mariner Energy sees this diversified portfolio as a key strategic asset, allowing the company to work in two distinct exploration environments. In 2008 Mariner Energy, Inc. reported estimated proved reserves of 974 billion cu. ft. of natural gas equivalent. In late 2009 Mariner Energy acquired bankrupt Edge Petroleum for about $260 million.

Shell Global Solutions International BV was formed in 1998. Shell Global Solutions coordinates the operations of half a dozen of Royal Dutch Shell technology businesses worldwide. Shell Global Solutions International BV provides research and technical services to a range of petroleum-related industry segments including additive process industries; automotive manufacture and supply; exploration and production; chemicals; gas and LNG processing; motorsports; refining; oil marketing; and supply and distribution. Shell Global Solutions International BV services include chemical analysis, crude oil evaluation, engineering, energy optimization, gas-to-liquids conversion, gasification, hydrocracking, inspections, thermodynamics, and water treatment.

Quicksilver Resources Inc. was founded in 1997 and is headquartered in Fort Worth, Texas with additional offices in Cut Bank, Montana; Glen Rose, Texas; and Calgary, Canada. Quicksilver Resources Inc., an independent energy company, engages in the acquisition, exploitation, exploration, development, production, and sale of natural gas, natural gas liquids, and crude oil in North America. Quicksilver Resources Inc. also involves in marketing, processing, and transmission of natural gas. Quicksilver Resources Inc. has interests in the Barnett Shale play in the Fort Worth Basin in north Texas; and the Rocky Mountain properties located in Montana and Wyoming, as well as interests in 127,000 contiguous acres in the Horn River Basin in northeast British Columbia. Quicksilver Resources Inc. also holds interests in the Canadian CBM properties in Alberta, Canada, as well as exploring the Delaware Basin in West Texas. Quicksilver Resources Inc. sells natural gas and crude oil to various customers, including utilities, oil and natural gas companies or their affiliates, industrial companies, trading and energy marketing companies, and other users of petroleum products. As of December 31, 2008, Quicksilver Resources Inc. had total estimated total proved reserves of 2.2 trillion cubic feet equivalents of natural gas. Quicksilver Resources Inc. has a strategic alliance with Enia S.p.A. to explore properties in the Fort Worth Basin.

Pioneer Natural Resources Company was founded in 1997 and is headquartered in Irving, Texas. Pioneer Natural Resources Company engages in the exploration and production of oil and gas in the United States, South Africa, and Tunisia. Pioneer Natural Resources Company produces crude oil, natural gas, and natural gas liquids. Pioneer Natural Resources Company primarily holds interests in the Spraberry field in the Permian Basin area; the Hugoton and West Panhandle fields in the Mid-Continent area; and the Raton field in the Rocky Mountains area. As of December 31, 2008, Pioneer Natural Resources Company had proved undeveloped reserves and proved developed reserves of approximately 246 million barrels of oil and natural gas liquids; and 1,064 billion cubic feet of gas.

Bonavista Energy Trust is a Calgary-based oil and gas royalty trust created through the reorganization of Bonavista Petroleum Ltd. in July 2003. The exploration and production company focuses on four core areas in Alberta, British Columbia, and Saskatchewan. In 2008 Bonavista Energy Trust reported it had about 1.2 million net acres of undeveloped land, the bulk of which is in Alberta. Bonavista also has proved reserves of 142.2 million barrels of oil equivalent and has identified some 700 quality drilling prospects. Bonavista Energy Trust has a balanced production of 52,500 barrels of oil equivalent per day -- 55% natural gas, 34% light oil, and 11% heavy oil. In 2009 Bonavista Energy Trust built up its asset base, acquiring properties in central Alberta area for about $698 million.

Rock Energy Inc. is a junior oil and gas company currently producing more than 3,600 boe per day (60% oil) from two main core areas (Plains/Lloydminster and West Central/Deep Basin). The oil and gas exploration and production company owns heavy oil and natural gas properties in Western Canada, primarily in Alberta and Northeastern British Columbia (the Plains). During the last four years Rock has consistently generated solid performance in production/reserves growth. In 2006 Rock delivered top-quartile finding and development costs. Rock Energy Inc. has an inventory of more than 100 drilling locations (three to four years) which includes a variety of projects generating a full range of risk and reward plays (low risk development locations to high impact exploration projects). Rock has the opportunities and the financial capacity to deliver growth for its shareholders.

HKN, Inc. was founded in 1973 and is based in Southlake, Texas. HKN, Inc., together with its subsidiaries, engages in the exploration, exploitation, development, and production of oil and gas properties primarily in the onshore and offshore Gulf Coast regions of south Texas and Louisiana. HKN, Inc. also explores and develops coal bed methane in Indiana and Ohio. As of December 31, 2008 HKN, Inc. operated or owned a non-operating working interest in 66 oil wells, 68 gas wells, and 12 injection wells.

Dune Energy, Inc. (DNE), an independent exploration and development company incorporated in Delaware, has operations focused along the Louisiana and Texas Gulf Coasts. Dune’s strategy is to grow organically through low-risk exploitation and development and higher risk exploration of its existing properties and acreage. This will be supplemented with opportunistic acquisition of underdeveloped properties that complement Dune’s existing portfolio. The oil and gas exploration and production independent has leases on 100,000 gross acres across 23 producing oil and natural gas fields along the Texas and Louisiana Gulf Coast. In 2008 Dune Energy reported proved reserves of 8.2 million barrels of oil and 83.8 billion cu. ft. of natural gas. Dune Energy, Inc. has a more than two-year current drilling inventory for its properties along the Gulf Coast. Swiss bank UBS owns 35% of the company; Russian gas company ITERA's Tierra Holdings BV unit, 33%.

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