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A resistivity survey is a simple but effective way to discover new mining grounds. Essentially, it is an electrical reading of the ground that is likely to reflect anomalies that are under the surface. Surveying the ground in this manner helps to mark potential areas where mining may be effective. The underground features are mapped through the use of electrical resistance. It is a process that is actually very similar to the way an OHM meter measures voltage. The system allows for a basic scan of possible underlying elements and clues in surveyors to the possible presence of substances that are good for mining. In the early days of this type of probing the equipment had four prongs and could give an accurate depth reading but not an accurate linear reading. This often led to a great deal of digging to see what was underneath the surface. The distance that the prongs were placed from each other covered a vast distance, were rigid and stable, and did not read the linear resistance level very well. Since then many changes have come about which offer much more accurate readings. The more accurate readings led to less experimental digging. Over the years the prongs were eventually reduced to a single unit that could be carried while surveying. While it is called a twin prong feature, it is still four prongs that are attached to a machine that resembles a metal detector. With technology currently offering new ways to verify findings, many resistivity surveys are now confirmed through the use of high end software that can literally map out the underground landscape with much greater accuracy. This provides vital information for mining companies that are ready to start digging. With technology continuing to improve the overall outlook for true readings is very positive. Advanced Geosciences. Inc. is a manufacturer of geophysical resistivity survey and IP imaging systems. (http://www.agiusa.com)
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