The induced polarization anomaly has been discovered in the surveyed area.

Based on metallogenic characteristics of the known Tuceng and Yandong porphyry copper deposits,this paper describes briefly the principle and examples of the "zoning model" and its application to ore-prospecting work,and deals emphatically with the locating of the concealed ore body when magnetic anomaly and IP anomaly are coexistent.

Based on an analysis of the IP anomaly within the Tinggong copper deposist in Nyemo County of Tibet and its characteristics, this paper points out the train of thought and techniques of applying electric method to the prospecting for porphyry copper deposit under such metallogenic geological-geophysical background, and makes a preliminary discussion on the related ore-prospecting effect.

This paper deals with the relationship between IP anomaly and enriched groundwater.

In the mode of three-phase four-wire system electrical power supply,the abnormal electrical power supply will do great harm.

Some kinds of analyzing and differentiating method for electricity data of exceptional power consumption, which was gathered by on - the - spot terminal and central station of power bad management system, were introduced.