Business drill sampling is done in accordance with provisions in the process of geological exploration drilling works ASTM D-1586. For soil layers thick on average every 2m 2m then take 01 acres of intact (for cohesive soils) or no intact samples (for discrete soil, soil weathering). For less than 2m thick layer of soil must also take 01 samples above. In the soft soil to form a thin tube used to sample, the sample must be wrapped moisturizing paraffin.
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