19 14, Swede An Tesheng and Englishman Ding Lan conducted an iron ore outcrop survey, and calculated the reserves as 25 million tons.
194 1 year, Tadao Kuroshio made exploration (1 borehole), and Qian Qiu in Daxi made geomagnetic survey.
The investigation and exploration of iron ore started from 1955 to 1958, with a reserve of1.1.200 million tons.
1956, the Geophysical Exploration Team of Metallurgical Bureau carried out1:50,000 geomagnetic survey in Sijiaying area, delineated the total length of magnetic anomaly in Sijiaying ore belt, and made preliminary exploration, which proved to be a large Anshan-type magnetite deposit (iron ore reserves exceeded 654.38+1100 million tons).
19591:65438+100,000,000 aeromagnetic survey, and aeromagnetic anomalies were found, numbered M 14 1, with an aeromagnetic anomaly intensity of 6000nT and a range of/kloc-0.
1973 to verify the aeromagnetic anomaly, carry out regional geomagnetic survey again (Sijiaying area 1:5000, Dajiazhuang area 1: 10000), delineate the total length of magnetic anomaly in Sijiaying ore belt 10.5km, and make quantitative explanation.
By the end of 198 1 year, the reserves of Sijiaying Iron Mine had exceeded 1 100 million tons (Yao Peihui, 1993).