“为国找矿”，初心如磐

Core Insights - He Jishan dedicated his life to the field of geophysical exploration, focusing on national resource security and making significant contributions to the industry over 60 years [1][2][3] Group 1: Contributions to Geophysical Exploration - He Jishan established the mountain electric field theory, overcoming traditional technical limitations in mountain exploration [1] - He invented the dual-frequency electromagnetic method, achieving a breakthrough in autonomous electromagnetic instruments [1] - He pioneered wide-area electromagnetic methods to support national deep-earth strategies and solved global challenges in leakage detection using the proposed flow field method [1] Group 2: Educational Impact - He Jishan created the first national key discipline in electromagnetic detection and established a foundation to support nearly a thousand students and teachers [1] - His classrooms and lectures are highly attended, inspiring many young students to engage in geological research and contribute to the nation [1] Group 3: Ongoing Research and Field Work - He Jishan remains active in research and exploration, addressing flood risks along the Yangtze and Yellow Rivers and guiding breakthroughs in rare earth mineral exploration [2] - He is involved in developing intelligent systems for tunnel exploration in the Sichuan-Tibet Railway, demonstrating his commitment to academic progress and national resource security [2]