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 300 employees, the company's subsidiaries include Wynnewood Refining Company (Oklahoma), Gary-Williams Production Company and Gary-Williams Real Estate Company. Refining and wholesale marketing are now the company's primary businesses. The company maintains a small marketing office in Oklahoma City.Today, the company's major asset is a 70,000 BPD crude oil refinery in Wynnewood, Oklahoma, purchased from Kerr-McGee in mid-1995, and operated as Wynnewood Refining Company (WRC). The refinery produces gasoline, diesel fuel, military jet fuel, solvents and asphalt.Privately held, the company was started as a small exploration company in the 1950's by Samuel Gary. Its first major discovery in 1967 was the Belle Creek Field in Montana. Sam Gary today serves as chairman of the board. Ron Williams is president and chief executive officer. Through its production subsidiary, the company now has exploration activities, primarily in the Gulf Coast and Rocky Mountain regions.Historically, Sam Gary spearheaded extensive philanthropic activities primarily through The Piton Foundation. Piton was formed in 1977 to focus on issues related to the disadvantaged. Now considered the community investment arm of the company, Piton is an operating foundation working to create opportunities for families and children in Denver to move from poverty and dependence to self-reliance.