Bernard J. Duroc-Danner

Universal Compression Holdings, Inc., provides natural gas compression services including sales, operations, maintenance, fabrication services, products to the natural gas industry, both domestically and internationally. The Company operates in four business segments, domestic contract compression, international contract compression, fabrication and aftermarket services.The core business, contract compression, involves providing compression equipment and service to customers. Their fabrication business involves the design, engineering and assembly of natural gas compressors for sale to third parties. Their aftermarket services business sells parts and components, and provides maintenance and operations services. And its Headquarter situated at Houston, Texas.

Weatherford International Ltd. provides equipment and services to the oil and natural gas exploration and production industry. The company was founded in 1972 and is headquartered in Geneva, Switzerland.

Grant Prideco, Inc. is engaged in drill pipe manufacturing. The firm provides engineered connections and premium tubular products that are used in oilfield exploration and development operations. The company was founded in April 2000 and is headquartered in Houston, TX.

Dresser LLC provides products and services used for developing energy and natural resources. The company offers control products (relief valves, actuators, meters, fittings, and the like for oil and gas exploration), measurement systems (gas pumps and point of sale terminals made by business unit Dresser Wayne), power and compression systems (Waukesha engines, fuel testing systems), and other infrastructure technologies (Roots blowers and compressors, piping, and pumps). Dresser was founded in 1880 and is headquartered in Addison, TX.