Contrast test of the transient electromagnetic system (CASTEM) at the Dawangzhuang iron mine in Anhui province

In order to accelerate the high-level oriented process of homemade electromagnetic prospecting instruments, the transient electromagnetic system (CASTEM) was developed independently. A field experiment was implemented to test the stability and the maximum detecting depth of the CASTEM system after a lot of efforts on subsystem development, testing and system integration. The location of field test was chosen at the Dawangzhuang iron mine in Anhui Province, where the geological characters are typical and significant productions of prospecting have been conducted. The content of the field test included the performance of high power transmitting, noise performance of the receiving system (sensor and receiver), observed decay curves and the effect of inversion in contrast with the top import TEM instrument. The results of the field test agreed with the drilling data available in this mine.