On the reliability of placer exploration by percussion-channel drilling
Abstract
Drilling of boreholes in comparison with sinking of mine workings allows to explore placer deposits of minerals with less time and money. The main type of mechanized sinking of exploration wells in gold-bearing placers in the USSR and abroad is percussion drilling.
Область исследования:
(Archived) Without section
References
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- Instruction on application of reserves classification to alluvial deposits of gold, platinum, tin, tungsten, titanium, niobium, rare earths and diamonds. Gosgeoltekhizdat, 1962.
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- Maltizov A. G. Brief information on the geology and gold-bearing capacity of the Kularsky district. Kolyma, 1965, No. 12.
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