Gerald J. Maier

Vintage Petroleum, Inc. was a energy company. The company was engaged in the acquisition, exploitation and exploration of oil and gas properties and the marketing of natural gas and crude oil. The company was headquartered at Tulsa, OK.

Willbros Group, Inc. engages in the provision of engineering and construction services to the oil, gas, refinery, petrochemical, and power industries. The company was founded by Miller Williams and David Williams in 1908 and is headquartered in Houston, TX.

Bow Valley Energy Ltd. explores and produces oil and natural gas. Its services include land acquisition, seismic purchase and interpretation, drilling, facilities and pipeline construction and the production of oil and natural gas. The company was founded in 1996 and is headquartered in Calgary, Canada.

TransCanada PipeLines Ltd. provides pipeline services for the gas and oil industries. It operates through the following segments: Natural Gas Pipelines, Liquids Pipelines and Power and Storage. The company was founded on March 21, 1951 and is headquartered in Calgary, Canada.

Stream-Flo Industries Ltd. manufactures wellhead and Christmas tree equipment, gate valves and check valves. It manufactures oilfield equipment which includes a full line of check valves and all components of wellheads and Christmas trees used in upstream oil and gas exploration and production. The company offers research and development, manufacturing, after sales, customer property management and specialty welding and cladding services. It has offices in Abu Dhabi, Beeville, Brooks, Cheyenne, Claysville, Dubai, Edmond, Edmonton, Edson, Estevan, Fort McMurray, Fort Nelson, Fort St. John, Granbury, Grande Prairie, Hassi Messaoud, Houston, Indiana, Jakarta, Kilgore, Kindersley, Longview, Midland, Rainbow Lake, Rifle, Slave Lake and Williamsport. Stream-Flo Industries was founded by Duncan J. McNeill in 1962 and is headquartered in Edmonton, Canada.

Master Flo Valve, Inc. provides surface and subsea flow management solutions for the global oil and gas industry. Its products include choke valves, control valves, subsea choke valves, trim selection and master flo patents. The firm also offers pre sales technical support, solution engineering, aftermarket service & support, remanufacturing, training & education and customer property management services. The company was founded in 1979 and is headquartered in Edmonton, Canada.