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High-frequency Screen. Compared with the commonly screening and grading equipments, the High-frequency screen adopts higher frequency. As a result, it is able to ...
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3 BULGARIA’S GOLD MINING AND PROCESSING Bulgaria has very diverse geology. The tectonic settle of the country is presented mainly of four first-order tectonic units
High-frequency Screen. Compared with the commonly screening and grading equipments, the High-frequency screen adopts higher frequency. As a result, it is able to ...
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Full-text (PDF) | The aim of this paper is to reflect on efforts made worldwide to construct processing centres where artisanal miners can visit to have gold ...
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