Jishan HeProfessor in School of Geosciences and Info-physics at Central South University. He was elected as one of the first academicians of the Chinese Academy of Engineering in 1994, and once served as president of Central South University of Technology, meber of the presidium of the Chinese Academy of Engineering, and now is a lifelong member of the American Association of Exploration Geophysics. He established and developed the theory and method of Dual-frequency IP method and Pseudo-random signal electromagnetic method. His theories, methods and instruments have been applied throughout China, and a large number of minerals have been found. Read More Read Less