On the reliability of placer exploration by percussion-cable drilling

References

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2. Instruction on application of reserves classification to alluvial deposits of gold, platinum, tin, tungsten, titanium, niobium, rare earths and diamonds. Gosgeoltekhizdat, 1962 (in Russian)
3. Kallistov P. L. Variability of mineralization and density of observations during exploration and sampling. Sov. geologiya , 1956, No. 53 (in Russian)
4. Kreiter V. M. Prospecting and exploration of mineral deposits. Nauka, 1969 (in Russian)
5. Maltizov A. G. Brief information on the geology and gold-bearing capacity of the Kularsky district. Kolyma, 1965, No. 12 (in Russian)
6. Methods of exploration and calculation of reserves of placer mineral deposits. Nedra, 1965 (in Russian)
7. Razumovsky I. K. Mechanical composition of placer gold and new data on the methodology of calculating placer reserves. Zolotaya promyshlennost' , 1939, No. 12 (in Russian)
8. Skuratov V. I., Tolpegin Yu. G. About reliability of placer exploration by percussion-cable drilling. Kolyma, 1964, No. 5 (in Russian)
9. Trushkov Yu. I. Accuracy of exploration data and calculation of reserves on placers. Izd. ONTI Dal'stroya , 1955 (in Russian)