The group's principal activity is the acquisition, exploration, development, production and sale of natural gas and oil and related business activity. the principal products produced by the group are natural gas and oil. the group, through it's wholly owned subsidiary daugherty petroleum, pursues it's exploration and development activities through the identification and drilling of new productive wells and the acquisition of existing producing wells. through sentra, the wholly owned subsidiary of daugherty petroleum, the group sells natural gas to two communities in south central kentucky. the principal markets for group's oil and gas are refineries and transmission companies.