Gary-Williams Energy Corporation (GWEC) is a small, independent oil and gas company, headquartered in Denver, with operations primarily in the Mid-Continent region of the United States. With approximately 275 employees, the company's subsidiaries include Wynnewood Refining Company (Oklahoma), Gary-Williams Retail Solutions, Inc., Gary-Williams Production Company and Gary-Williams Real Estate Company. Refining and wholesale marketing are GWCE's primary businesses.
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