Nittetsu Mining Co., Ltd. is a mining company. The Resources segment mainly involves in the mining, processing and sale of mineral resources, such as limestone, silica stone, dolomite; the manufacture and sale of soft drinks, calcium carbonate, ready-mixed concrete and concrete secondary products, quicklime and slaked lime; the sale of non-combustible building materials and wood processed products; the provision of geological survey, drilling and construction consulting services, geothermal steam and hot water, cargo handling services, and the mining, smelting and sale of copper. The Machinery and Environment segment manufactures and sells crushers, transport machinery, ball valves, and the trading of various machinery and electric equipment. The Real Estate segment involves in the trading, leasing, appraisal and management of real estate. On April 1, 2013, it merged with a wholly owned subsidiary. On October 1, 2013, it acquired a 70% stake in a Japan-based limestone company.