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Dobycha zolota

By Sirika Bekele Terfassa

Dobycha zolota

By Sirika Bekele Terfassa

0 - Default Title
Description
Dobycha zolota sostoit iz rqda processow i metodow, ispol'zuemyh dlq izwlecheniq zolota iz zemli. K takim metodam dobychi zolota otnosqtsq zolotoiskatel'stwo, metallodetekciq, shlüzowanie, dragirowanie i t. d. Jetot metall qwlqetsq dorogostoqschim älementom, poätomu otdel'nye lüdi i gosudarstwa wsegda byli zainteresowany w dobyche zolota, w osnownom dlq polucheniq äkonomicheskoj wygody. Zoloto bylo obnaruzheno w Alabame okolo 1830 goda, wskore posle zolotoj lihoradki w Dzhordzhii. Dobycha zolota nanosit ogromnyj wred okruzhaüschej srede. Ona qwlqetsq odnoj iz osnownyh prichin obezleseniq. Chtoby dobywat' zoloto, derew'q i rastitel'nost' wyrubaütsq i szhigaütsq. Kogda zemlq polnost'ü ogolqetsq, na krupnyh gornodobywaüschih predpriqtiqh s pomosch'ü ogromnyh bul'dozerow i äxkawatorow izwlekaüt iz pochwy metally i mineraly. Chtoby amal'gamirowat' (ob#edinit') dobychu, oni ispol'zuüt himicheskie weschestwa, takie kak cianid, rtut' ili metilrtut'.
Product details
Binding:
Paperback
Number of Pages:
76
Release Date:
2024-09-10
Publication Date:
2024-09-10
Publisher:
Sciencia Scripts
Languages:
Original: Russian
ISBN10:
6208072034
ISBN13:
9786208072032
GPSR Manufacturer Reference:
[email protected]
Weight:
131 g
Height:
150 cm
Width:
220 cm
Thickness:
5 cm
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