FIELD: mining. SUBSTANCE: method for field investigation of ore geotechnological properties includes running into well of two pipe strings. One pipe string is lowered down to the upper boundary of ore interval, and the other is lowered to the lower boundary of this interval. Leaching solution is injected through one of strings with simultaneous its pumping out in the same volume through the other string to fill the well with this solution within the ore interval. EFFECT: higher efficiency. 24 cl, 1 dwg
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