Small-Scale Gold Mining - Dahlberg, E H
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The artisanal mining of alluvial gold is an extremely common small mining activity in many countries. This is a comprehensive and practical guide aimed at filling a need for improved goldmining techniques.

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Produktbeschreibung
The artisanal mining of alluvial gold is an extremely common small mining activity in many countries. This is a comprehensive and practical guide aimed at filling a need for improved goldmining techniques.