Diamond Y Enterprises provides oilfield transportation and rig up services for Chesapeake in the Appalachian Basin. As a subsidiary of Gene D. Yost and Son, Inc., Diamond Y serves both Yost Drilling and other customers from upper New York state to southeastern Kentucky.

Known for its versatility and dependability, Diamond Y can handle everything from rig mobilization and long-haul services to new services in oilfield fluid hauling and disposal. Diamond Y employees currently operate 44 oilfield transportation trucks and will be operating more than 15 tank transports in 2008. The dependable trucking services provided by Diamond Y are essential to support Chesapeake's growth in the Appalachian Basin.