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The section includes papers on a number of Japanese plants: The improvements of the zinc casting yield rate at Annaka smelter; Recent improvements of copper electrowinning at Niihama nickel refinery; Recent operation of the lead smelting plant at Kamioka Mining and Smelting; Effective utilisation of energy at Saganoseki smelter; Renewal of lead electric furnace at Kosaka smelter; Development of the shredder dust recycling process using a gasification smelting furnace; Improvement of anode scrap charging capacity into the Mitsubishi Process C-furnace; Improvements in tank house operation at Iijima refinery; Improvement of nickel recovery system at Tamano refinery; Introduction of air-heating furnace for reduction of LNG consumption., The section includes papers on a number of Japanese plants: The improvements of the zinc casting yield rate at Annaka smelter; Recent improvements of copper electrowinning at Niihama nickel refinery; Recent operation of the lead smelting plant at Kamioka Mining and Smelting; Effective utilisation of energy at Saganoseki smelter; Renewal of lead electric furnace at Kosaka smelter; Development of the shredder dust recycling process using a gasification smelting furnace; Improvement of anode scrap charging capacity into the Mitsubishi Process C-furnace; Improvements in tank house operation at Iijima refinery; Improvement of nickel recovery system at Tamano refinery; Introduction of air-heating furnace for reduction of LNG consumption.

This paper describes the field observation of settlement of a raft foundation for a large scale building complex in Nagoya city in Japan. The complex consists of a 28 story hotel, a 15 story office building and a low-storied banquet hall in the middle all of which are supported on a single 80 m square basement on raft foundation. Since the load on the foundation is non-uniform, the differential settlement of the foundation was investigated analytically, taking into consideration the interaction between the ground and the raft. To confirm the validity of the design, measurements were conducted for about 2 years during the building construction. The results of the measurement are discussed below.