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Analog-to-digital recorder of electromagnetic and acoustic emissions was developed and designed for laboratory and field operation to monitor electromagnetic and acoustic signals under changed stress-strain state of heterogeneous materials and rocks. The device provides field studies in the Tashtagol Mine that bring a lot of data of EM and acoustic signal parameters. Measurements of the electromagnetic signals intensity allow monitoring of changes in the rock stress-strain state during and after blasting, and during different geodynamic processes.
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