马钢南山铁矿的东山铁矿床属第四勘探类型。原来采用第三勘探类型所提交的B级储量,由于勘探网度不够,加上原钻探工程质量较差、采样化验分析元素不全,对矿体的形态、质量均无法掌握,以致年产100万吨的设计能力长期未能达到(1985年仅30万吨左右)。1982 The Dongshan iron deposit of Nanshan Iron Mine in Masteel is the fourth exploration type. The original Grade B reserves submitted by the third exploration type, due to the lack of exploration network, the poor quality of the original drilling project and the incomplete sampling and analysis of elements, have no control over the shape and quality of the ore body, resulting in an annual output of 1 million tons The design capability has not been achieved for a long time (only about 300,000 tons in 1985). 1982