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Jaco Oil Company is a management company the provides support for a variety of operating companies in several different industries. The Company is privately owned and focused on the management of companies owned by the family.
BOC Gases-Gaspro is a Kapolei, HI-based company in the Energy and Utilities sector.
Animas Pediatric Dental Group is a Farmington, NM-based company in the Energy and Utilities sector.
General Oil Company is a Livonia, MI-based company in the Energy and Utilities sector.
Gran Tierra Energy Inc. is an international oil and gas exploration and production company headquartered in Calgary, Canada, incorporated and traded in the United States and operating in South America. The Company currently holds interests in producing and prospective properties in Colombia, Brazil and Peru. The Company strategy is focused on establishing a portfolio of drilling opportunities to exploit undeveloped reserves to grow production, as well as undertaking exploration drilling to grow future reserves.