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大红山为一大型铜、铁矿床，主要矿体埋藏深度500～800米，矿体最厚达100～200米，富矿约占铁矿储量的50％以上。在这一区域内航测磁异常面积近300平方公里，矿区内以1000r地面物探等值线圈定面积达30平方公里，是我省一个大的强磁性矿区。矿区自一九六六年开始勘探，到一九七九年共施工钻孔五百余个，进尺四十多万米。七三年前采用大口径钢粒钻进，钻孔弯曲严重。七四年后全面推广小口径金刚石钻进，弯曲度有所好转，但仍不能完全避免，加之钻孔又深，很多钻孔终孔位移偏离勘探线甚远。
Dahongshan is a large-scale copper and iron deposit. The main ore body is buried at a depth of 500-800 meters and the ore body is the thickest with a thickness of 100-200 meters. The rich ore accounts for more than 50% of the iron ore reserves. In this region, the area of aerial magnetic anomaly survey is nearly 300 square kilometers. The area of 1000x geophysical prospecting coil in the mine area is 30 square kilometers. It is a big strong magnetic mining area in our province. The exploration of the mine area began in 1966 and a total of more than 500 holes have been drilled in 1979 to a total length of over 400,000 meters. Seven or three years ago using large diameter steel drilling, drilling serious bending. After four or four years, it has fully promoted the drilling of small diameter diamonds. The bending degree has been improved but it can not be completely avoided. In addition, the deep borehole drills a lot of borehole displacements far away from the exploration line.