Mine Lots (1929) : Statistical Yearbook of Imperial Japan 50 (1931) Table 74

PERIOD: Total of Japan proper at the end of each year 1925-1929. Breakdown by type of minerals in Japan proper, Korea, Taiwan, South Sakhalin and Kwantung Province at the end of 1929. SOURCE: [Statistical Tables of the Ministry of Commerce and Industry]; [Statistics by government offices, overseas territories of Japan].

时期：1925年至1929年每年日本本土的总计。按矿物类型对日本本土、朝鲜、台湾、南萨哈林岛及关东省1929年末的数据进行细分。数据来源：[商务部和工业部统计表]; [日本海外领地政府办公室统计数据]。