Barnwell Industries, Inc., through its subsidiaries, engages in oil and natural gas exploration, real estate, and contract drilling service operations. The company operates in four segments: Oil and Natural Gas, Land Investment, Residential Real Estate, and Contract Drilling. The Oil and Natural Gas segment involves in the acquisition, exploration, and development of oil and natural gas properties in Canada. It produces and sells oil and natural gas. This segment owns oil and natural gas property interests principally in the Province of Alberta with minor holdings in the Provinces of Saskatchewan and British Columbia. Its undeveloped acreage includes 8,832 net acres at Doris, 6,793 net acres at Bonanza/Balsam, 5,949 net acres at Thornbury, 4,440 net acres at Rycroft, and 3,296 net acres at Paddle River in Alberta, as well as 4,511 net acres in Roncott, Saskatchewan. The Land Investment Segment invests in leasehold land and other real estate interests in Hawaii, the United States. It owns interests in leasehold land and development rights for property located approximately six miles north of the Kona International Airport in the North Kona District; and 14 lot acquisition rights as to lots within approximately 5,000 acres of agricultural-zoned leasehold land in the upland area of Kaupulehu, North Kona. The Residential Real Estate segment acquires house lots for investment and development of homes for sale in Hawaii. The Contract Drilling segment provides well drilling services and offers water pumping system installation and repairs, and distributes pumps and equipment in Hawaii. It drills water, water monitoring, and geothermal wells of various depths. The company was founded in 1956 and is based in Honolulu, Hawaii.