Greencastle Resources Ltd. (Greencastle) is a diversified company with interests in gold and base metals exploration, and oil and gas exploration and royalties. The Company's gold and base metal properties are at the exploration-stage. The Company operates through three segments: investments in private and public companies, oil and gas interests, and mining interests. The Company's investment segment consists of its investment in marketable securities and investment in private companies. The oil and gas segment consists of its oil and gas interests. The mining segment consists of its mining interests in Canada and in the United States. The Company has oil and gas interests in over two projects in the Primate area of Saskatchewan. The Company also has mining interest in Jewel Ridge Prospect, Indian Creek Project, Nechako Property, Rockstone Property, Manitou Project, Boggy Lake, Ferrier Project and Charlie Creek Property. It also has investments in other companies.