A resistivity meter is used for taking electrical readings of the underground landscaping and creating an image based on the level of density and resistance of materials. This is for discovering mining areas and places where there is a rich content of minerals that indicate potential mining grounds. The device relies on prongs that bounce electrical activity down into the ground and create a map based on the responses it receives. The original version of this was a long, stationary unit that covered a long area of ground. Prongs were often dug into the ground in order to get a reading, and there were certainly many flawed results that came back. Today the reading is much more accurate and can often be used reliably to help locate all kinds of different materials that are buried under the ground. This gives the surveyors a close to perfect image of shapes, densities, and other factors to help make accurate determinations about the material they are looking at. With software programs that are able to discern various shades of thickness and make adjustments to the readings as needed, crews are able to simply walk the grounds of the area that is being surveyed and bounce the images straight to a computer program that interprets the data. The machines are much more compact and are easily maneuvered. The longer, bulky objects of the early twentieth century required much more work to move through an area of interest. The programs that are available today help to pinpoint the likelihood of mining, even giving depth readings and other vital information. The resistivity meter is certainly one of the more useful tools that have stood the test of time in the mining industry. Many of today's activities are based on the initial readings and a confirmation check with higher tech equipment before digging begins. This helps to unearth precious metals, coal, and other resources from the most appropriate areas.
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