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《连城锰矿四号矿段地下采矿、选矿工程可行性研究报告》已经冶金部、国家原材料投资公司(1993)冶计字第280号文批准。该报告是由福建冶金设计院完成的。该矿露天开采境界设计的最低标高为400m,设计可采矿量30.58万t,其中氧化矿14.79万t,混合原生矿15.79万t。
The Feasibility Study Report of Underground Mining and Mineral Processing Engineering of No.4 Mine of Liancheng Manganese Mine has been approved by Document No. 280 of Metallurgical Minerals and National Materials Investment Corporation (1993). The report was completed by Fujian Metallurgical Design Institute. The minimum elevation of the mine’s open-pit design is 400m and the designed mining capacity is 305,800t, of which there are 147,900t of oxide ore and 157,900t of mixed primary ore.