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Obtaining more data on coalbeds in advance will presumably enhance the whole coal production process. Therefore, there is a need to employ a method of mechanical logging, which is able to provide data on coalbeds, including such parameters as coal seems thickness, depth of a coal seam?s roof, and coal ash content. Since drilling and blasting operations are inevitably used to burst overburden rocks, it would be much more efficient to employ them in extensive and accelerated data extraction. In some cases, the dista...