Barnwell Industries, Inc. (Barnwell) operates in oil and natural gas exploration, land investment, contract drilling and residential real estate businesses. The Company operates in four segments: Oil and Natural Gas segment, Land Investment segment, Contract Drilling segment and Residential Real Estate segment. The Oil and Natural Gas segment is engaged in oil and natural gas exploration, development, production and sales in Canada. Its Land Investment invests in leasehold interests in real estate in Hawaii. Its contract drilling segment provides well drilling services and water pumping system installation and repairs in Hawaii. Its residential real estate segment develops homes for sale in Hawaii. Its subsidiaries include Barnwell of Canada, Limited, Water Resources International, Inc., Barnwell Kona Corporation, Cambridge Hawaii Limited Partnership, Barnwell Geothermal Corporation, Kaupulehu Investors, LLC and Barnwell of Israel, Ltd. among others.