Mr Grinsfelder is a geologist with more than 30 years of industry experience. He joined TXCO in April 2007 through its acquisition of Output Exploration, where he served as vice president of exploration and business development.

In his new role, he will be part of the team responsible for driving TXCO’s growth as well as managing the company’s land, exploration, legal, and investor relations and corporate communications departments.

James Sigmon, chairman and CEO, said: The move signals a more aggressive commitment to our future growth, and enhances the company’s capabilities to focus on specific core functions. Gary has blended in well with TXCO, and we are pleased to have promoted such a talented geoscientist at TXCO.