Dredging technology at placer gold deposits in the Far North

<p class="Authors">The volumes of world gold mining were reviewed. As a result the analysis, it was found that proportion placer is very insignificant. This due to fact most easily accessible reserves are substantially depleted, and development deposits with complex geological conditions, including those located in Far North, economically impractical. To solve this problem, method proposed for isolating dredging open-pit from effects negative temperatures by hangar-type structure. Similar structures used industry considered. Calculations dimensions structure allow safe manoeuvring dredge presented. The data on duration season when implementing solution conditions North provided. A protecting rocks freezing using technology proposed. technical economic indicators confirming effectiveness implementation presented.</p>