William Tobman

Bonavista Energy Trust is a Calgary-based oil and gas royalty trust created through the reorganization of Bonavista Petroleum Ltd. It is one of North America's largest energy trusts with operations are geographically focuses in Alberta, Saskatchewan and North Eastern British Columbia and possess a high level of company operated properties allowing for timely and low cost production additions. Bonavista Energy Trust is an open-ended unincorporated investment trust governed by the laws of the Province of Alberta. The Trust was founded by Michael M. Kanovsky on May 22, 2003 and is headquartered in Alberta, Canada.

Divestco, Inc. is an exploration service company, which is engages in providing data, software, and services to the oil and gas industry. It operates through the following segments: Software and Data; Services; Seismic Data; and Corporate and Other. The Software and Data segment provides a complete geophysical and geological software suite for the workflows and requirements of oil and gas professionals; as well as exploration datasets and a library. The Services segment offers geomatics services including data integrity validation, mapping, database hosting, and advisory support and consultation as well as seismic processing services, including data quality assurance, processing and data management services for geophysical and geological information. The Seismic Data segment includes seismic data such as brokering and licensing existing seismic data between data owners and licensees, managing existing seismic data for the purpose of brokering sales, and creating new seismic data inventories through recording multi-client services. The Corporate and Other segment refers to the finance and accounting, sales and marketing, human resources, and information technology services to other segments. The company was founded on March 17, 2000 and is headquartered in Calgary, Canada.

Palliser Energy, Inc. explores for, produces, and develops oil and gas properties. The company is headquartered in Huston, TX.

Part of Precision Drilling Corp., CenAlta Energy Services, Inc. provides oil well servicing and maintenance services. The private company is based in Calgary, Canada. The Canadian company was founded by John A. Niedermaier. CenAlta Energy Services was acquired by Precision Drilling Corp. on October 19, 2000 for $132.09 million.

Canadian Sub-Surface Energy Services Corp. provided electric line, swabbing and related oilfield services. The company was headquartered in Calgary, Canada.

Mannville Oil & Gas Ltd. operates oil and gas field properties.